Torque Converter Vibration Under Load

A torque converter is a type of fluid coupling which transfers rotating power from a prime mover, like an internal combustion engine, to a rotating driven load. Well, I finally located somebody to take a hard look at my vibration Friday (Craigslist is your friend). R & R Torque Converter Clutch and Reprogram ECM (PCM) Engine AWD 7. Since I got it back the shudder is fixed however now I have the issue with vibration under high engine load. I am just now getting ready to drive it and did a high rpm engine test in park , I am getting a vibration from the tranny area. Driving at 15mph touching the gas i hear it and flip to neutral it goes. And I also noticed that there's also a pronounced vibration at around 1000 RPM as well. clutch plate is splined onto the turbine shaft b. Either way, to further diagnose the flexplate/converter would be to pull the trans ($833+t) and of course "no guarantee" if it turns out to be inside the motor. I also have a thrumming sound around 1500rpm, but it's not a vibration, and it happens both coasting and under load. The vibration starts mild, and can get worse. They're basically scratching their heads. So here is what happens when a cylinder fires while the engine is under load; consider the image below-. Mine started doing it today under similar circumstances as others; 45-55 mph under load wile going up a long hill. DIAGNOSIS When a customer comes to you with a vibration or noise complaint, the first diagnostic step is to get as accurate a description as possible of what’s happening from your customer. Want to get the wheels balanced (high speed balancing) but not sure it is the wheels. I would like to record them and see if I can see anything funny that may relate to the shudder. More accurately if I keep the rpm's down to normal driving you never know there is an issue. Tach does not run away and no flashing OD light. Follow the Repair Procedure below to address this condition. As far as your truck is concerned, it can be tough to track down a vibration, as there are many components that can cause them. Transmission torque converter slippage not only results in excessive heat buildup, also uses more fuel, and can cause some vehicles (e. Install a rebuildable torque converter in your 1994-2007 Dodge 5. Technician A says that a torque converter does a similar job as the manual clutch. The main function of it is to allow the load to be isolated from the main power source.   Generally that bearing will get louder each time the transmission shifts into a higher gear and the converter has to work harder and puts more stress on it. What we experience on the Diesel models more frequent as on the V8 models was a Torque converter SHUDDER feels like a vibration under load in 3rd gear accelerating, this was more an oil viscosity problem not Torque Converter failure although TC replacement was the cure. However, the vibration is more noticeable when first starting out when it's cold, and when its under load, but it's always at 20-25mph. Anchor bolts in heavy machines of metallurgical plants are often, from the point of view of their carrying capacity, limiting factor in increasing productivity. To confirm TCC shudder, the vibration concern must be created in normal operation (Mode A) of the test. My money is on Torque ConverterI had the same problem with mine and a number of people i know all had the same vibration between 2000 - 2300RPM under slight load Was it a Recon TC or a brand new onemost Recon TC all have that vibration. 3E) The mature design of Voith automatic transmissions is up-to-date with the latest technological developments. 8 Just in case drive line carrier bearing What i have Vibrations completely GONE!!!. I have replaced both front left and right CV axels, have replaced engine mounts and have removed drive shaft with no change, in fact the vibration seemed to get worse after replacing the axels. Torque converter shudder Model Years Part Number occurs during 3rd or 4th gear under light to Crown Victoria/Grand Marquis - Base Only 1995-97 F8AZ-7K177-AA moderate acceleration. The ring gear and torque converter looked good when I had it apart. Slight vibration under load at highway speed. Hydro-Kinetic Drives, Hydraulic Torque Converters and Hydraulic Couplings By NICHOLAS A. Try deep thinking. Drop the pan, change the filter and drain the torque converter. Ignition issue- one cylinder misfiring- any CEL or codes ? 2. The Allison 1000 transmission has been designed with many good features and provides a solid foundation for us to build on to handle high HP and torque loads. The effects of a harmonically varying normal load on transient responses of a two-degree-of-freedom torsional system, with nonlinear dry friction and under sinusoidal torque excitation, are reported. Replace the torque converter. 355 Nm - torque converter; Electric Motor - Power vs. Could this be the torque converter? It seems to be the worst at a certain rpm range and under moderate acceleration, like going up a hill where you can maintain rpm. Since the car won't move, the engine has to. The transmission never slips, never hunts for a gear and overall runs fine. Ford Torque converter Bad sounds. As far as your truck is concerned, it can be tough to track down a vibration, as there are many components that can cause them. Try these suggestions, I hope they help. It will do it at any speed, any gear under constant throttle or light acceleration. The difference between the speeds of the impellor and turbine is called stall speed. If a higher stall torque converter was used, it's connection at idle speeds would be much "looser" and the power pulses wouldn't be transmitted through. Technician A says that a torque converter does a similar job as the manual clutch. New flywheel and torque converter. Drove back from the transmissions workshop tonight, all seems well so far! Interesting to hear the owner saying they do 2 or 3 Range Rover Sports-Vogues-Discoverys every week, this ZF box is renown for this fault!. They don't "increase" noticeably. American Honda investigated the judder and found that the torque converter was not causing the judder; rather, it was caused by deteriorated transmission fluid. 1995 Ram 2500 Cummins Turbo Diesel: engine vibration when engine under load, ie on acceleration, going uphill,and upon torque converter lockup. 2 (LT1) Corvette 1 Warranty Information. If you haven't changed the spark plugs, it is going to be your problem they wear out at 60k miles and when you put the truck under a load at low rpms in overdrive you start to feel a hesitation and it feels like torque converter shudder but its really your spark plugs that are worn out and causing a misfire under load. The computer cleared all the codes, the check engine light is OFF and I'm still feeling the vibration/shaking. Parts Information Part Number Description QTY 24279497 Torque Converter: 6. It is a typical project car that has had a few owners helping along the way and the history is unknown. is a type of fluid coupling which is used to transfer rotating power from the engine of a vehicle to the transmission. We hope this was helpful to you. This is most common after engine or transmission repair or after a collision. The condition is most noticeable when the vehicle is under a. TCC shudder which is caused by the transmission should only occur during the apply or the release of the converter clutch. Torque converter was replaced and the transmission was re-flashed back into a learning mode. I found the noise! Check if you have the same noise! Check out My Amazon Auto Accessories Store! Lets make that Weekend job less Painful! https://www. Only happens when accelerating lightly under load. Then I step very slightly on the gas to accelerate and I feel a slight bobble in either the engine or transmission. 3E) The mature design of Voith automatic transmissions is up-to-date with the latest technological developments. Also replacing both lower control arms and passenger side inner tie rod end this week. Drove back from the transmissions workshop tonight, all seems well so far! Interesting to hear the owner saying they do 2 or 3 Range Rover Sports-Vogues-Discoverys every week, this ZF box is renown for this fault!. The torque converter is a fluid coupling, so it doesn't engage or disengage. Im fairly confident your converter should not be locking at 1200, or even below or at 1500 RPM. • NO — Go to step 10. If vibration or shudder occurs only in 1st or 2nd gear, or when brakesTown Car - Base Only 1995-97 F8VZ-7K177-AA. The results showed that steering wheel and seat track vibration are drastically reduced by slipping the torque converter. So if the vans he is seeing regular for torque converters are ones that do the mountain passes maybe there is the link. under "Application Guidelines" on page 6. 4 Install brand new genuine torque converter solenoid 5 Filter, gasket, and connector. Intermittent wipers maximize visibility in poor weather conditions. 2008 RTL w/42000 mi, orig owner. 3 32000-73011 32000-06050 9B 50 APPLICABLE WARRANTY • This repair is covered under the Toyota Powertrain Warranty. Various types of torque converters have measurable stall torques as well. Wouldn't a bad torque converter cause the fluid to deteriorate, the rpms to rise and be worse under heavy vs light load when there is more power being transfered to the TC? Thanks!. Methods of Verification of Main transmission gear Boxes On Test Bench Using Vibration Measurement ratios (I to IV). Sometimes it's the simple stuff. the issue was known by acura in apr 2004 (recall), we bought the car new in may 2004 and were never told. The torque converter issue exists across all years and transmission models. The clutch connects the two shafts so they may be locked together and spin at the same speed (engaged), locked together but spinning at different speeds (slipping), or unlocked and spinning at different speeds (disengaged). At 80mph, it's smooth as butter. 4 Install brand new genuine torque converter solenoid 5 Filter, gasket, and connector. IDESPREAD interest in hydraulic drives was created in this country when hydraulic couplings were incorporated in several popular automo- biles. its really bad from 2000 to 3500 rpm in park and smooths out above that. Have you had the codes read?--*When the going gets tough, use duct tape. The 4K vibration isn't horrible in neutral but is very significant under load. So you have vibration under load. Someone else said that the torque converter is bad?!?. Starts making noise when. The TCC is. The vibration can be felt in the front seats, in the door and very slightly in the steering wheel. Thanks for any help Clete Edited by Clete (07/04/04 08:21 AM). Under harsh acceleration the whole engine/transaxle assembly will be torqued in the direction of the engine's rotation. I had vibration mainly noticeable under acceleration/load. Can anybody tell me what a torque converter slippage feels like. If YES >> Proceed to Section D - Torque Converter Replacement. Our load cell offering includes competitively priced general purpose and fatigue rated load cells, which come in a variety of mechanical configurations such as single or dual bridge, low profile, canister, rod-end, and s-beam load cells — all of which provide excellent accuracy at an affordable price. American Honda investigated the judder and found that the torque converter was not causing the judder and the transmission is not damaged by this judder. Removing the bolts that hold the converter in place will allow it to slide back into the transmission. You could try this with car in neutral first. Engine Noise Under Load was created by druggernaught just wondering if you might be able to tell me a little more about this engine noise i am getting when driving the my 1990 Toyota Corolla 1. A torque converter noise will increase under this load. Not right at all. Doesn't really seem to be there under heavier acceleration, when the truck is cold, or just when driving around doing errands. Took me along time to get to the answer which is a pretty simple inexpensive fix. After reading, you will know how a torque converter works, symptoms of a bad torque converter, and its average replacement cost. A torque converter. The torque response in the high-speed, low-speed, and generator shafts were tested and validated against experimental measurements involving step changes in load with the dynamometer operating under speed-regulation mode. Here's how to test your torque converter:. I don't know if the shudder an vibration go hand in hand or not. They said they've only seen this in like 7 vehicles in the last 10 years. i TORQUE CONVERTER TURBINE NOISE AND CAVITATION NOISE OVER VARYING SPEED RATIO. The torque divider provides improved eficiency and a broader range of performance in second gear dozing and scraper push loading. The vibration is felt in P/N and any gear pretty much first appearing around 1300 RPM, then smooths out, then re-emerges at 18/1900 RPM, then smooths out above that. and they immediately said that it was the torque converter. However, the Check Engine light has come on. Now, imagine the electric motor drives a mini** torque converter. One of the fundamental differences between a fluid clutch (a fluid coupling or torque converter) and a mechanical plate clutch is slippage. Do any (or all?) torque converters disengage completely from the engine while the engine is idling and the vehicle is stopped, and/or the transmission is in Park/Neutral? If a torque converter does not disengage during these stationary/idle scenarios, how much of a load does it add to the engine?. All of these are interchangeable for dimension and. I wouldn't say the vibration is violent but you can feel it through the seats and body of the car, don't really feel anything in the steering or handling. locked, to ensure optimal traction under any ground conditions. Strange vibration at 90-100kms - Transmission or Driveshaft ?? Opinions please related & only under load. Replaced the snub mount and it reduced the frequency and severity of the issue. Is the shudder concern resolved? • YES — The repair is completed. One disadvantage of the ICE, compared with the electric motor, is that it can not start under load and it needs an external starting device (electric starter). Lockup torque converters were added to many newer-model vehicles to help with fuel economy. You will feel it the most when the car is accelerating just slightly, because the rpm changes slowly. accelerometer. Hi5 Torque Converters are serviceable by the end user between passes, or events. Stops when brake or gas tapped slightly. This means that when the engine speed decreases, the engine output decreases as shown in the next schema. In most applications, production is increased and fuel. The torque divider provides improved eficiency and a broader range of performance in second gear dozing and scraper push loading. I'm getting a slight vibration under load coming in at 1500rpm and disappearing at 1800ish rpm. In other words, I would have expected the noise/vibration to appear releasing the accelerator; not under load. 9848 Content on this site produced by www. Re: Torque converter causing vibration Exactly. In 3rd or 4th gear under a load like when going up a decent hill, I can feel some shuddering or slipping of the torque converter. Took it to my dealer and they diagnosed it as a torque converter issue. So you have vibration under load. When stopped in gear, in an automatic, the engine is pushing against the torque converter and bouncing against the mounts and vibrating. I took it to the tire shop to have it checked and they did come back with an out of balance tire but it didn't fix the problem. This is a discussion on vibration at 1500 rpm within the General Help forums, part of the LSx Technical Help Section category; I have an '02 camaro ss that has a strange vibration at 1500 rpm. Bolt Preload Tension Force: In the tension joint, the bolt and clamped components of the joint are pre-load designed to transfer the external tension load through the joint by way of the clamped components through the design of a proper balance of joint and bolt stiffness. Inspection of the suspension and steering systems show nothing wrong there. Torque Converter Clutch. Learn vocabulary, terms, and more with flashcards, games, and other study tools. It only happens under a light load at these low rpms. A Torque converter ain't really doing too much untill you're at highway speeds of above about 42mph. I don't believe this is any sort of transmission shudder or torque converter shudder as I get the similar shake even when the car is in neutral, so there should be no load on the transmission. The Combustion Engine (device name "combustionEngine") is our engine model which represents all types of internal combustion engines. Transmission Vibration and Noise Vibration. At 1500 rpm and 38-40 mph the torque converter in the transfer case was vibrating, causing the heat shield to growl because of the transfer of vibrations. I'm thinking torque converter and/or transmission. 0 gas engine and a six speed 6L90 automatic transmission. The manual says “some models” have a lockup torque converter with an electronic clutch that kicks in at 40 mph under light load…which is the exact conditn where I started hearing/feeling the vibe rumble. vibration/shudder on acceleration. Appreciate the help. The torque converter and Engine Control Module/ECM (SAE term: Powertrain Control Module/PCM) logic has been modified to reduce the possibility of this condition occurring. When stopped in gear, in an automatic, the engine is pushing against the torque converter and bouncing against the mounts and vibrating. Its most prevalent while hauling my camp trailer (~4500lbs). My Plymouth has a 318 with Torqueflite and double WCFB's. Torque converter shudder Model Years Part Number occurs during 3rd or 4th gear under light to Crown Victoria/Grand Marquis - Base Only 1995-97 F8AZ-7K177-AA moderate acceleration. Is there something that can be adjusted to try to tune out the shudder or slipping or whatever might be going on?. I disconnected the converter and ran it, vibration gone. I had a issue on my duramax that I thought was the torque converter. We carry over 500 types of domestic, import, high performance, and industrial torque converters to meet your needs. It would engage with the starter fine -- so felt good at first -- but would hear funny noise when accelerating engine. Wouldn't a bad torque converter cause the fluid to deteriorate, the rpms to rise and be worse under heavy vs light load when there is more power being transfered to the TC? Thanks!. the torque converter keeps going bad, i mean i replaced. The torque converter is the route if the problem. Also, in reading up on different tranny issues, I wonder if a failing battery could cause this? I haven't thrown a meter on it yet, but believe the battery is going. flexplate & 28 oz. A torque converter is a type of fluid coupling which transfers rotating power from a prime mover, like an internal combustion engine, to a rotating driven load. The torque converter is tested for leaks, lockup, concentricity, and balance to eliminate the possibility of front seal leaks, premature bushing wear, and vibration; Power Torque Remanufactured Transmissions are cold, hot, load, and road tested using custom-programmed dynamometers and Computer Aided Road Simulation testing program, fully. DIAGNOSIS When a customer comes to you with a vibration or noise complaint, the first diagnostic step is to get as accurate a description as possible of what's happening from your customer. well went out and drove it. MAIN GRIPE = at cruising speed on freeway or secondary road, under light throttle, notice the tach CONSTANTLY varying ~100 RPM, like the torque converter is locking and unlocking. The shudder is most pronounced when there is no big load on the transmission, and it will occur in all gears. Never experienced a problem like this (fortunately), but wouldn't any looseness be more prevalent when the throttle is released? I would think under load any looseness/slack would be taken up by the load. Technician A says that a torque converter does a similar job as the manual clutch. If a higher stall torque converter was used, it's connection at idle speeds would be much "looser" and the power pulses wouldn't be transmitted through. Doesn't really seem to be there under heavier acceleration, when the truck is cold, or just when driving around doing errands. Truck is still driving, but slipping and overheating the converter, and that stuff is circulating through the system. Only reason I havent pulled the oil pan yet is because I bought the engine from a reputable shop, it runs real smooth and it really sounds like its coming from the torque converter or flywheel. The result is that the engine vibration at those speeds corresponds with the stronger vibration that I feel while the engine is under load. So as load changes the TC could unlock at anytime between 40-75 (as speed increases load will need to increase). Drivers want a Camaro SS A8 recall to fix the issue. It transmits power from the engine to a drive unit. Read "Transient responses of a 2-dof torsional system with nonlinear dry friction under a harmonically varying normal load, Journal of Sound and Vibration" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. 9 (9 speed transmission) 7 new oil Shell ATF134 (8,5qts). 2004 c5 corvette with automatic transmission. He spun the wheels up while keeping them on the car with an old-style balancer. Hi5 Torque Converters are serviceable by the end user between passes, or events. They have had a number of complaints about this from what I have been told. American Honda investigated the judder and found that the torque converter was not causing the judder and the transmission is not damaged by this judder. The lock up torque converters are FELT at maintaining freeway speeds. By the way and maybe related or not to the suspected torque converter problem, a friend of mine with a Landrover Discovery spoke of his experience last week with its automatic transmission. Ha ha, On my C4 I managed to bolt my flywheel/torque converter wrong. It's hard to describe, but basically when I put the car under load, such as speeding up to overtake/merge, driving up a hill/on ramp, or just taking off quickly, it sounds like something is vibrating on the driver's side of the engine bay. power (kW) torque (Nm) Example - Torque from an Electrical Motor. The heart of the DIWA transmission is the hydrodynamic counter-rotating torque converter. Many factors influence torque converter stall speed including; output torque of the engine, vehicle weight, rear axle ratio, rear tire height, torque converter diameter, impeller fin angle design, stator design, impeller. I found the noise! Check if you have the same noise! Check out My Amazon Auto Accessories Store! Lets make that Weekend job less Painful! https://www. The shudder is most pronounced when there is no big load on the transmission, and it will occur in all gears. This van has always had somewhat of a vibration upon acceleration since the day we bought it. Torque converter lock up IGOTACUMMINS is an online forum and community for all Cummins Turbo Diesel enthusiasts. The general thought was that it had to do with the torque converter. In a properly designed hydraulic coupling, under normal loading conditions, the speed of the driven shaft is about 3 percent less than the speed of the drive shaft. The dynamometer includes a prime mover mounted on a frame for driving the torque converter. Then, the converter was slinging the fluid off and making a considerable mess as you can imagine. Your wheels, tires, axles, driveshaft, transmission, clutch or torque converter and engine components are all rotating at a high rate of speed, and any one or more of these components can create a vibration if they are worn or out of spec. I have replaced both front left and right CV axels, have replaced engine mounts and have removed drive shaft with no change, in fact the vibration seemed to get worse after replacing the axels. vibration at 1500 rpm. So you have vibration under load. com is available under a. Drivers want a Camaro SS A8 recall to fix the issue. Stops when brake or gas tapped slightly. Just my thoughts. Vibration/droning noise at 80km/h think about it being the tranny or torque converter?! The car only has 134,000 genuine kilometres, with up to date servicing. Also, in reading up on different tranny issues, I wonder if a failing battery could cause this? I haven't thrown a meter on it yet, but believe the battery is going. Last year it developed a shudder so off to the transmission shop for a rebuild and new torque converter. Eureka! There is a known issue with some 06 Civic models concerning a resonance/vibration at 1,500 rpm, between 29 and 40mph. Find all the details inside Circle Track Magazine. The 4 new tires took care of the vibration. 8 Just in case drive line carrier bearing What i have Vibrations completely GONE!!!. Beginning to think torque converter issues? I imagine if it were any kind of an engine issue, the shudder would still be there under the same load conditions while in manual mode. torque is needed, if your torque converter locks up and releases (at around 40 MPH, 60Km) the torque lock up and releasing will cause a vibration feel under load. Accordingly, the electronic controller 38 engages the torque converter clutch 36 to establish a mechanical torque transfer path that bypasses the fluid coupling 34. vibration like out of round wheels ONLY under acceleration, no other time, started suddenly, 3 weeks ago. ASE 4 - Suspension and Steering Module 5 - Vibration Correction 5-12 Vehicle Speed-Related Vibrations Student Workbook One or more of the following tests may be necessary for some unique vibration concerns, such as those that are torque/load-sensitive in addition to mph or Rpm sensitive. Verify the resonance/vibration does not occur in neutral and is most noticeable between 1400 and 2000 RPM with the converter clutch engaged during medium to. The reason for this new posting is that I just found the owners manual and read it. I have a 2000 S-10 LS 2. Never experienced a problem like this (fortunately), but wouldn't any looseness be more prevalent when the throttle is released? I would think under load any looseness/slack would be taken up by the load. Vibration under load Under load (the more torque, the more shake), the front vibrates. Therefore, a bypass or lock-up clutch is used to mechanically lock the torque converter. vibration at 1500 rpm. Also replacing both lower control arms and passenger side inner tie rod end this week. To determine if the vibration you're feeling in the vehicle is being caused by the torque converter, you need to examine the relationship between Engine Speed and transm ission Input (Main) and Ou tput (Counter) Shaft Speed. In a GM vehicle, a torque converter problem (in a 4 speed Turbohydromatic with o/d) the vibration occurred at abut 45 to 50 UNDER LOAD, like your problem. Ex I'm going 20 MPH and the speedo is saying 50. vagcom and it will generally keep it from lugging and causing the vibration. A looser torque converter. / I am going to assume that maybe the torque converter is causing the vibration ?. Torque Converter. I searched vibration issues and didn't find anything quite like mine so I'm hoping for some advise. Check brakes , bearings, joints first. Noticed the vibration was easily noted by placing a metal bar on the exhaust and feeling it vibrate though. I have a manual switch that I use in my syclone when I go to the track. Drivers of the SS A8 eight-speed Camaro have reported experiencing a shake or shudder between 25 and 80 mph while the transmission is changing gears. See page 51 for the applicable RunRight units’ torque and load characteristics. There haven't been any TSBs released by Toyota related to a continuous vibration. This paper presents an approach for active suppression of transient responses utilising only the current sensors available in the powertrainAn active. The time it wasn't a tune up, it ended up being the switch on the brake pedal needing adjustment and somehow that was causing an issue. I have a 2000 S-10 LS 2. The result is that the engine vibration at those speeds corresponds with the stronger vibration that I feel while the engine is under load. Dealer thought it was a seal. Is there something that can be adjusted to try to tune out the shudder or slipping or whatever might be going on?. One of the fundamental differences between a fluid clutch (a fluid coupling or torque converter) and a mechanical plate clutch is slippage. I've felt a problem much like this in my BMW, and it was a center support bearing. it will start this heavy vibration/shudder/shake. The results showed that steering wheel and seat track vibration are drastically reduced by slipping the torque converter. A flywheel is a good example of a device that uses torque to generate energy, that is then stored within the flywheel for further use. Jump to Latest Follow 1 - 20 of 26 Posts It had the torque converter replaced 2X, the motor mounts, the entire transmission replaced. Transmission oil pumps provide fluid pressure for the transmission and torque converter. typically diagnosed as a bad torque converter. Slight vibration in 4th gear (under very slight load) now cured by a new (not recon) torque converter, new oil pan & filter as well. its really bad from 2000 to 3500 rpm in park and smooths out above that. The D6N single-stage torque converter efficiently responds to changing load conditions by providing torque multiplication, therefore increasing drawbar pull. Ha ha, On my C4 I managed to bolt my flywheel/torque converter wrong. It transfers energy via hydraulic fluid. Extremely cold temperatures can facilitate a failure due to shock load. The Allison 1000 transmission is a 5 speed automatic with a single disc lock-up torque converter. I was not aware of any torque converter issues but will check with the dealer tomorrow. The conclusion people are coming to is that the torque converter is constanly locking and unlocking itself over and over again because it can't decide what to do. D'ARCY, JR. Vibration under load Under load (the more torque, the more shake), the front vibrates. Could this be the torque converter? It seems to be the worst at a certain rpm range and under moderate acceleration, like going up a hill where you can maintain rpm. It is a device with its own inertia, speed, friction, and torque. Tapping the brake, releasing the gas pedal or accelerating harder will stop the vibration. Transmission oil pumps provide fluid pressure for the transmission and torque converter. If it vibrates underload then goes way at the top end of rpm range, check you Coil Pack. Is the shudder concern resolved? • YES — The repair is completed. If YES >> Proceed to Section D - Torque Converter Replacement. Never experienced a problem like this (fortunately), but wouldn't any looseness be more prevalent when the throttle is released? I would think under load any looseness/slack would be taken up by the load. (Note: I still did not do trans flush after shaft repair) Now my trans has gone out at 137,264 miles because I did not do trans flush. AAMCO thinks it may be the torque converter locking up intermittantly. 2 (LT1) Corvette 1 Warranty Information. To absorb torsional vibration of the engine output member 18 when the clutch 36 is engaged, the torque converter assembly 24 includes a cam plate 40 and radially-extending springs 46. After reading, you will know how a torque converter works, symptoms of a bad torque converter, and its average replacement cost. With that, if you take a car with a 2,500RPM stall converter and you hold your foot on the brake hard, and hit the gas at the same time, (as if you were going to power brake), the "general" RPM in which the tires will break loose is at "about" 2,500RPM. The tech said it was something to do with the locking torque converter. Wouldn't a bad torque converter cause the fluid to deteriorate, the rpms to rise and be worse under heavy vs light load when there is more power being transfered to the TC? Thanks!. Took it to the dealer three times. the issue was known by acura in apr 2004 (recall), we bought the car new in may 2004 and were never told. i guess thats probably cause it aint vibrating through the tranny. Over the mid-speed range, the TCC is partially engaged and both the wet friction clutch and the fluid torque converter transmits torque 2-3]. fluid coupling that transfers rotating power from a prime mover to a rotating driven load. Technical vibration under acceleration. 0 gas engine and a six speed 6L90 automatic transmission. 3 32000-73011 32000-06050 9B 50 APPLICABLE WARRANTY • This repair is covered under the Toyota Powertrain Warranty. Torque converter shudder Model Years Part Number occurs during 3rd or 4th gear under light to Crown Victoria/Grand Marquis - Base Only 1995-97 F8AZ-7K177-AA moderate acceleration. Vibration under load Under load (the more torque, the more shake), the front vibrates. I still have a vibration that I think is even worse than before. The Dodge 47RH and 47RE heavy-duty automatic transmissions. They don't "increase" noticeably. That's why putting it in third going up the hill makes it go away. Vibration seems worse when it's under load- accelerating up a motorway hill causes visible steering wheel shake but not every time, sometimes the more you acccelerate the less it seems to shake. If you hold that speed under load it continues. torque converter issues. Driving at 15mph touching the gas i hear it and flip to neutral it goes. Since that is not the case, a broken part would cause other symptoms besides just a vibration, so you have to look for things that does not apply to. I was under the hood again yesterday and found that disconnecting the EGR valve from its vacuum source made the engine run smoother. Recently i have noticed a strange vibrating sound coming from the rear of my e46 330d under acceleration. How a torque converter works Most of the modern vehicles are equipped with internal combustion engines (ICE). Over the mid-speed range, the TCC is partially engaged and both the wet friction clutch and the fluid torque converter transmits torque 2-3]. If it does not do it when the car is rolling, just when you hit the gas, then its probly not drivetrain. In a vehicle with an automatic transmission, the torque converter connects the power source to the load. It only happens under a light load at these low rpms. 8 Just in case drive line carrier bearing What i have Vibrations completely GONE!!!. It generally occurs at part throttle and light acceleration, between 15 and 50 miles per hour, just before the shift to one of the top gears where the converter reaches "lock-up. Does the torque converter lock up in 3rd and 4th gears as well as the higher gears? Does the torque converter lockup disengage when the brakes are applied? The reason I'm asking is that I'm trying to isolate a vibration problem during light acceleration and I would like to rule in or out a problem with the torque converter. I was not aware of any torque converter issues but will check with the dealer tomorrow. This warranty is in effect for 60 months or 60,000 miles, whichever occurs first, from the vehicle’s in-service date. In this article we are going to talk about the part of the automatic transmission called the torque converter. I plan on. The difference between the speeds of the impellor and turbine is called stall speed. Mine started doing it today under similar circumstances as others; 45-55 mph under load wile going up a long hill. They ended up replacing the torque. Check for fluid leaks. If you look at the forum link in my above post you can see for yourself the problem has been present since the 2013 model launched with the 6L45 transmission. i guess thats probably cause it aint vibrating through the tranny. The fact-checkers, whose work is more and more important for those who prefer facts over lies, police the line between fact and falsehood on a day-to-day basis, and do a great job. Today, my small contribution is to pass along a very good overview that reflects on one of Trump’s favorite overarching falsehoods. Namely: Trump describes an America in which everything was going down the tubes under  Obama, which is why we needed Trump to make America great again. And he claims that this project has come to fruition, with America setting records for prosperity under his leadership and guidance. “Obama bad; Trump good” is pretty much his analysis in all areas and measurement of U.S. activity, especially economically. Even if this were true, it would reflect poorly on Trump’s character, but it has the added problem of being false, a big lie made up of many small ones. Personally, I don’t assume that all economic measurements directly reflect the leadership of whoever occupies the Oval Office, nor am I smart enough to figure out what causes what in the economy. But the idea that presidents get the credit or the blame for the economy during their tenure is a political fact of life. Trump, in his adorable, immodest mendacity, not only claims credit for everything good that happens in the economy, but tells people, literally and specifically, that they have to vote for him even if they hate him, because without his guidance, their 401(k) accounts “will go down the tubes.” That would be offensive even if it were true, but it is utterly false. The stock market has been on a 10-year run of steady gains that began in 2009, the year Barack Obama was inaugurated. But why would anyone care about that? It’s only an unarguable, stubborn fact. Still, speaking of facts, there are so many measurements and indicators of how the economy is doing, that those not committed to an honest investigation can find evidence for whatever they want to believe. Trump and his most committed followers want to believe that everything was terrible under Barack Obama and great under Trump. That’s baloney. Anyone who believes that believes something false. And a series of charts and graphs published Monday in the Washington Post and explained by Economics Correspondent Heather Long provides the data that tells the tale. The details are complicated. Click through to the link above and you’ll learn much. But the overview is pretty simply this: The U.S. economy had a major meltdown in the last year of the George W. Bush presidency. Again, I’m not smart enough to know how much of this was Bush’s “fault.” But he had been in office for six years when the trouble started. So, if it’s ever reasonable to hold a president accountable for the performance of the economy, the timeline is bad for Bush. GDP growth went negative. Job growth fell sharply and then went negative. Median household income shrank. The Dow Jones Industrial Average dropped by more than 5,000 points! U.S. manufacturing output plunged, as did average home values, as did average hourly wages, as did measures of consumer confidence and most other indicators of economic health. (Backup for that is contained in the Post piece I linked to above.) Barack Obama inherited that mess of falling numbers, which continued during his first year in office, 2009, as he put in place policies designed to turn it around. By 2010, Obama’s second year, pretty much all of the negative numbers had turned positive. By the time Obama was up for reelection in 2012, all of them were headed in the right direction, which is certainly among the reasons voters gave him a second term by a solid (not landslide) margin. Basically, all of those good numbers continued throughout the second Obama term. The U.S. GDP, probably the single best measure of how the economy is doing, grew by 2.9 percent in 2015, which was Obama’s seventh year in office and was the best GDP growth number since before the crash of the late Bush years. GDP growth slowed to 1.6 percent in 2016, which may have been among the indicators that supported Trump’s campaign-year argument that everything was going to hell and only he could fix it. During the first year of Trump, GDP growth grew to 2.4 percent, which is decent but not great and anyway, a reasonable person would acknowledge that — to the degree that economic performance is to the credit or blame of the president — the performance in the first year of a new president is a mixture of the old and new policies. In Trump’s second year, 2018, the GDP grew 2.9 percent, equaling Obama’s best year, and so far in 2019, the growth rate has fallen to 2.1 percent, a mediocre number and a decline for which Trump presumably accepts no responsibility and blames either Nancy Pelosi, Ilhan Omar or, if he can swing it, Barack Obama. I suppose it’s natural for a president to want to take credit for everything good that happens on his (or someday her) watch, but not the blame for anything bad. Trump is more blatant about this than most. If we judge by his bad but remarkably steady approval ratings (today, according to the average maintained by 538.com, it’s 41.9 approval/ 53.7 disapproval) the pretty-good economy is not winning him new supporters, nor is his constant exaggeration of his accomplishments costing him many old ones). I already offered it above, but the full Washington Post workup of these numbers, and commentary/explanation by economics correspondent Heather Long, are here. On a related matter, if you care about what used to be called fiscal conservatism, which is the belief that federal debt and deficit matter, here’s a New York Times analysis, based on Congressional Budget Office data, suggesting that the annual budget deficit (that’s the amount the government borrows every year reflecting that amount by which federal spending exceeds revenues) which fell steadily during the Obama years, from a peak of $1.4 trillion at the beginning of the Obama administration, to $585 billion in 2016 (Obama’s last year in office), will be back up to $960 billion this fiscal year, and back over $1 trillion in 2020. (Here’s the New York Times piece detailing those numbers.) Trump is currently floating various tax cuts for the rich and the poor that will presumably worsen those projections, if passed. As the Times piece reported: