All of these are interchangeable for dimension and. They need to be able to quickly identify a malfunctioning torque converter or a lockup torque converter that fails to lockup. BD’s TorqForce torque converter was specifically designed to handle the kind of punishment you dish out. (Normally a launch shudder or left under hard acceleration. If there is vibration under acceleration, the chances are that you have worn universal joints. In this article we are going to talk about the part of the automatic transmission called the torque converter. (It was used by the way. Do not weld the clamps to the pipe as it may weaken the pipe and cause a stress crack. TSB - Technical Service Bulletins and Recalls from Jaguar + BMW E60 TSB or squeak noise heard during gearshifts under acceleration. Load sensing pumps and an optimized torque converter provide fuel efficiency improvements with slight impact on cycle time. I do not believe that there's a problem with leaky seals in the valve body. I have no issue currently under moderate acceleration or towing or running at high way speeds. Removing the bolts that hold the converter in place will allow it to slide back into the transmission. Slight vibration in 4th gear (under very slight load) now cured by a new (not recon) torque converter, new oil pan & filter as well. now i have installed a built 1974 302 with a 28 oz. my old 302 had a moderate vibration i blamed on the flexplate i installed so my converter would fit because i dont remember a vibration before then. Vibration in a driveshaft can be caused by many conditions. 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. 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. Improvised Torque Wrench ; Bolt Torque Calculator. 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. 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. The transmission seems to shudder when driving on the highway in top gear. I have had a vibration under acceleration since I got the car 7 years ago (with only 70000kms). If you put a little load on it, the pulse goes away. I say that means an engine problem since the vibration is present in park. The last piece of info makes me think there is some sort of blockage or restriction in the engine or exhaust system somewhere. The hydraulic torque converter is used to reduce the amount of mechanical linkage found in a manual clutch. It's vibrating when it's on the verge of lockup (moderate speeds, low rpm and light throttle position. Noticed it many miles ago that under very light load, top gear, ~45mph, tq "pulses" in and out of lockup which produces a slight audible and vibration sensation. Driving in a lower gear reduces the amount of slip and heat. Said it damaged the bell housing as well. Has anyone had this problem before and know the potential causes? Chrysler group actually does not recommend flushing. A torque converter will provide a range of stall speeds based on the amount of load that is placed on the torque converter. our converters are balanced for vibration * All of our. Torque Converter System - Free download as PDF File (. 9 (9 speed transmission) 7 new oil Shell ATF134 (8,5qts). It's a mechanical clutch in the torque converter that, when engaged, locks the torque converter parts together making a dir. Lets hope this is the fix as it is very annoying. For an automatic transmission with a torque converter, the torque converter itself can act as a fluid damper, since it is a hydrodynamic coupling. I told the tech about vibration and results of shaft swap and he said it was my torque converter slipping due to dirty fluid. A better method is to load the motor down so that it is running at about one-half the no load speed and measure the load torque and the speed. 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. This vibration happens parked and at each gear (as you increase in speed) at that certain RPM (under a load). That problem changed from slipping to a vibration or a shutter under load at 45 mph to 75 mph. It seems to get worse with distance traveled- at the beginning of the journey not too bad. This fastener bolt torque calculator will Estimate the unknown torque, diameter, axial force applied and coefficient of turning friction for the given conditions. What you are most probably feeling is called a lock up clutch. The calculator below can be used to calculate the torque required to achieve a given axial bolt force or load. The torque converter is the unit that transfers the force from the engine to the transmission gears in a smooth way. If I accelerate lightly (read: grandma. When worn out, and under a load, the braces are hitting metal to metal, transferring the engine vibration into the frame. That problem changed from slipping to a vibration or a shutter under load at 45 mph to 75 mph. 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. The comp cams 268h is a fairly mild cam so if your old converter is in good shape, I'd just see how it runs with it. absorb all the machine/load weight distribution, allowing the axle shafts to only transmit torque to the planetary hub reductions. when the shutter occured i saw a discrpancy between these values. The forced vibration response of the joined shells subjected to various harmonic excitations and boundary conditions was calculated and compared with those FEM results obtained by finite element software ANSYS to confirm the reliability and accuracy of this analytical solution. I was under the hood again yesterday and found that disconnecting the EGR valve from its vacuum source made the engine run smoother. The calculator below can be used to calculate the torque required to achieve a given axial bolt force or load. If you open the throttle up slightly with the torque converter and OD still locked the sound goes away. PATC performance torque converters are manufactured in-house at our state of the art torque converter shop. 2 Modeling the Tightening Process Achieving proper control of the tightening process is possible only if you understand the relationship between torque and turn in the development of tension. Go under the Reference Publications tab at the top and then 2008 or 2009, and Tribeca. (Normally a launch shudder or left under hard acceleration. I could make the vibration go away by putting my foot under the brake pedal and pulling up on it releasing the pressure on the switch. I also checked if torque converter of flex plate. I have no issue currently under moderate acceleration or towing or running at high way speeds. Not only does the car now have a new torque converter, it also has new bolts to hold it together and a new cable running to the gear shifter. 0 adds a layer of goofy on vacuum or under boost. flexplate & 28 oz. They have been on the phone iwht Honda Hotline and sending them data to confirm the diagnosis be fore they rip my E apart. Upshift and it goes away until that RPM is reached again. Approximate Torque Nm Grade 4. 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!. There isnt anyway to tell what fluid is in it. Hydraulic transmission, device employing a liquid to transmit and modify linear or rotary motion and linear or turning force (torque). According to dynamic performance and emission performance, the match of engine and torque converter can be optimized based on their characteristics as well as matching principles. our converters are balanced for vibration * All of our. I could make the vibration go away by putting my foot under the brake pedal and pulling up on it releasing the pressure on the switch. OK, now comes the problem. The vibration is there when driving but also when running the engine in park. We upgrade Ford's C4 automatic transmission, one of the most reliable transmissions Ford has ever produced. For example, torque converters lock up at highway speed for better fuel mileage. This is most common after engine or transmission repair or after a collision. 8 Just in case drive line carrier bearing What i have Vibrations completely GONE!!!. In other words, I would have expected the noise/vibration to appear releasing the accelerator; not under load. If it were a problem with the tires or suspension, it would continue to be there even when you take your foot off the gas. All piping should be secured with clamps to prevent vibration and excessive stress due to the weight of the fluid. I have heard about some transmission additives that should eliminate the shudder completely. If I accelerate lightly (read: grandma. 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. Figure 1 Tightening Fasteners Transfers Energy 1. If i nail the gas from a stop, vibration comes on as i hit 35-40, than worsens til 60, but i didnt go any faster, very scary. Just my thoughts. Turning on the A/C does the same. The transmission and torque converter must be removed as an assembly to avoid damage to the converter drive plate, pump bushing and oil seal. If vibration on lift, which means minimal load on tranny/torque converter, check injectors, coilthings that when strain is put on engine and cause it to not perform when load is applied to it, until the rpm raises enough to over come the strain. For all other torque converters, you will only use 6 bolts, inserting one in every other hole of the Flexplate. In a vehicle with an automatic transmission, the torque converter connects the power source to the load. 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!. Torque Converter. That is my understanding. Fingers crossed. Now, imagine the electric motor drives a mini** torque converter. When the converter clutch locks the fans together, the engine rpm will drop 700 RPM. - - - Updated - - - Could a faulty torque converter cause a vibration under heavy load? If you spin the drive train in any gear with the rear wheels in the air, there is no vibration. As you can imagine, when I'm pulling a trailer or have a heavy load and I'm driving in a manner that prevents the torque converter from locking up, the temperature will reach 180-210 (this is operating temp when the cooler is fully open. It takes place of mechanical clutch in an automatic transmission. Lower the vehicle. It had a torque capacity of 450 lb-ft and trailer towing capacity of up to 19,000 pounds GCWR, the highest ratings for a one-ton truck at the time. It's vibrating when it's on the verge of lockup (moderate speeds, low rpm and light throttle position. DO NOT PUT THE CAR IN PARK UNTIL AFTER YOU SHUT OFF THE ENGINE or you will hear the load noise of a parking pawl trying to engadeg into a rotating parking plate. If the vibration stops, with the torque converter disconnected, the problem is found. It only happens under a light load at these low rpms. The efficiency is constantly varying, depending on the RPM of the converter, the power input to the converter and the output load, or towed weight. In a vehicle with an automatic transmission, the torque converter connects the power source to the load. He found that 3 motor mounts were busted. It sits in between the engine and transmission. An out-of-balance or damaged torque converter will also shake the vehicle. Blamed my tires. It seems to be better under very light acceleration. Failed torque converter can cause the transmission to overheat. 4 Cylinder engines, especially larger displacement ones, are not known for idling smoothly. Is there a brief shudder intermittently present while driving under a light load between 25 - 50 mph? Typically, the condition will be most noticeable prior to an upshift. When enabled by the driver, lockup-mate AUTOMATICALLY: activates the TCC lock-up when the conditions are right; but more importantly, then disables it under conditions that would put excessive stress on the transmission. Is it possible that without lock-up the torque converter the driveshaft will be under less stress during acceleration and hence make less vibration? Also when repairing transmission do they take off whole engine/trans together or just the transmission unit on the W639 model (really dont want the dealer to mess up another part of my van)?. My problem got worse and went from a shudder to a constant shudder, vibrate and clunk. Complained with the dealer couple of times, finally the dealer acknowledged that there is a problem and identified it as issue with the torque converter. It's putting quite a bit of load, at very low RPMs, on an engine configuration that's already prone to a rough idle. I have had a vibration under acceleration since I got the car 7 years ago (with only 70000kms). The car drives just as it did before but. A vibration has developed in the last 6 weeks during vehicle operation between 45 to 55 mph when under cruising speed load. Along with the no-load speed measure, this provides a second point on the torque-speed curve. under "Application Guidelines" on page 8, and for Ten Series using the Driveline Sizing graph. Now the shifting feels pretty rough at those same speeds, but we’re not actually feeling the shudder like before. Make a note of the torque required for that particular nut and bolt pair. Lets hope this is the fix as it is very annoying. Replace Torque Converter. The dealer is going to replace the torque converter Monday under warranty. The statement of being "more under load" would lead me to think trans or maybe the torque converter. I would next check the condition of the engine, transmission and transfer case mounts. Appreciate the help. The reason for this new posting is that I just found the owners manual and read it. If the concern is gone with the torque converter clutch disabled (Mode B, TCC Open) and is gone when the torque converter clutch enabled (Mode C, TCC Locked), the vibration root cause is TCC shudder and the torque should be replaced. 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. An approximate analytical solution for pure slip-type transients is first obtained and confirmed with computational studies. This may lead to faster than expected torque converter clutch material wear, and a shudder feeling when the TCC is applied. 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!. If long torque converter life is an objective, it is extremely important that the fins of the impeller pump are adequately reinforced against fatigue and the outside housing does not distort under stress. From what I have read, it should lock in at a minimum speed of about 45 mph. Under high load, low RPM situations, such as accelerating in OD (torque converter locked up), there is a vibration, I can feel it through the floor and even up through the steering wheel. He replaced and at the same time, replaced the timing belt and water pump. Drive, 600 Ft. The engine operating speed at 2000 rpm was considered for analysis. Still getting vibes on highway when ECO light comes on after rear motor mount was replacedam I looking at a bad torque converter?. Rear u joint is tight. Sometimes in idle it vibrates during idle. The Dodge Fluid coupling allows the driver to start under “no load”, resulting in a smooth start up and reduction of amp draw from the motor. This vibration typically occurs when the vehicle is hot between 35 and 45 MPH, and goes away immediately if I let off the throttle. Still a slight vibration under heavy load. The general thought was that it had to do with the torque converter. Within the last few months, we've experienced an intermittent major shudder/vibration, primarily when pulling hills. PATC performance torque converters are manufactured in-house at our state of the art torque converter shop. I would next check the condition of the engine, transmission and transfer case mounts. 2 tune however, going up to 7. BD’s TorqForce torque converter was specifically designed to handle the kind of punishment you dish out. If the TC was slipping, it should throw a code (P1187 if I remember correctly). It consists of three internal elements that work together to transmit power to the transmission. If long torque converter life is an objective, it is extremely important that the fins of the impeller pump are adequately reinforced against fatigue and the outside housing does not distort under stress. Is there a brief shudder intermittently present while driving under a light load between 25 - 50 mph? Typically, the condition will be most noticeable prior to an upshift. Torque converter shudder fells like a slight to heavy vibration in the transmission, and is usually accompanied by an interruption in power transfer. Haven't been able to solve this one yet. Torque Converters and Fluid Couplings have non-automotive applications. I'm thinking torque converter and/or transmission. Hi Deano, I have a S2 VS with 145000kms. The torque converter will lock-in around 30 mph hour in the car. It's vibrating when it's on the verge of lockup (moderate speeds, low rpm and light throttle position. Transmission Oil Pump. There are two main types of hydraulic power transmission systems: hydrokinetic, such as the hydraulic coupling and the hydraulic torque converter, which use the kinetic energy of the liquid; and hydrostatic, which use the pressure energy of the liquid. Just my thoughts. 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. D'ARCY, JR. mechanical load exists. Let’s take a moment and think about the way a crankshaft works. What is a torque converter? Using a general internet search, one can find a basic definition for a torque converter that says it's a hydraulic coupling between a prime mover and a rotating driven load. Yes, but not all torque converters are the same. torque 4 hours to 24-hours after the initial torque. 6R Limited Outback would shudder around 1,600rpm usually when lightly accelerating or when going up small hills. Normal Torque converter lockup vibration. I'm thinking torque converter and/or transmission. Circle D pro 3 torque converter 2700 stall. (It was used by the way. I have started noticing what I believe is called "shudder" from my tranny under. We are the world’s largest full-line supplier of torque converter parts, and offer transmission and specialty driveline components through a global network of parts distributors. Replace the converter. Someone has to load all of the flights, sort the freight and get it back to the customers. Tach needle shows pulse too. and a harsh vibration while. But it only happens quite occasionally, like maybe once or twice in a 20 mile trip and only for a second or two each time. Parts Information Part Number Description QTY 24279497 Torque Converter: 6. If you need assistance in choosing a torque sensor to meet the requirements of a specific application, contact us via Live Chat!. 2020 KENWORTH T880 For Sale In Fort Pierce, Florida At TruckPaper. The vibration felt is known as "lockup shudder" and may occur due to a bad engine or transmission as well. I do not believe that there's a problem with leaky seals in the valve body. TORQUE CONVERTER CHECKS Torque converter problems may be confused with transmission problems and vice versa, so it’s essential that you check this important component, as well. This is resulting in the coupling seeing a torsional vibration. P0741 code definition Torque Converter Clutch Circuit Performance or Stuck Off What the P0741 code means The Powertrain Control Module (PCM) will set the P0741 diagnostic trouble code when it notices a difference between the rotational speed of the torque converter and the transmission input shaft that is greater than 200 revolutions per minute (RPM). Now the shifting feels pretty rough at those same speeds, but we're not actually feeling the shudder like before. I had vibration mainly noticeable under acceleration/load. Only under load at higher speeds/ higher gears. The total "pressure" under several bolts will be the sum of the "pressures" under each bolt. Some describe this as the "shudder" not really a shudder on mine, as low throttle I guess. I seriously doubt the converter is ballooning. Sonnax designs, develops and manufactures the highest quality aftermarket automotive products. 4 Install brand new genuine torque converter solenoid 5 Filter, gasket, and connector. The problem is that the engine and transmission are vibrating when engine runs under load - for example when transmission upshifts (any gear) or when driving uphill. I had to leave to go out of town so I dropped off at my mechanics. Vibration under load Under load (the more torque, the more shake), the front vibrates. On the front of the engine I could not really feel a vibration. 1993 E350 transmission vibration My Ford E350 passenger van with 5. Appreciate the help. The engine and drivetrain must be ruled out before troubleshooting transmission noise or vibration. Transmission Oil Pump. Yes, but not all torque converters are the same. If guns kill people, then pencils misspell words, cars make people drive drunk, and spoons make you fat. For example, torque converters lock up at highway speed for better fuel mileage. 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. They now want to replace the axles. Learn vocabulary, terms, and more with flashcards, games, and other study tools. 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. The noise I hear I hear it all of the time, from 5 mph and up, and it will make it in every gear, as well as in/ out of lockup. The vibration lasts for only about 1-2 seconds and can be minor to very pronounced. I drive a 2011 GMC Sierra 2500HD ex-cab 2wheel drive with a 6. The main function of it is to allow the load to be isolated from the main power source. under the torque-angle curve is proportional to the energy required to tighten the fastener. The ring gear and torque converter looked good when I had it apart. 2011 Sierra 5. Very often this problem is mis-diagnosed and sometimes transmissions are needlessly rebuilt as a result. So if the vans he is seeing regular for torque converters are ones that do the mountain passes maybe there is the link. 4L Powerstoke. Some customers may describe this as a vibration. Won't know about the hole and torque converter nose until I drop the tranni. The converter output voltages are used to match the power supply required to the loads. Some vehicles have a torque converter lockup, which means when the vehicle is traveling at a certain speed in high gear the torque converter "locks" and there is no slippage to the transmission resulting in better fuel economy. Now, imagine the electric motor drives a mini** torque converter. Be aware that several companies provide their own high-performance parts, including a billet front cover to resist deformation under high torque loads, an anti-ballooning plate at the pump hub to keep the torque converter from ballooning under heavy torque and binding on the pump, upgraded internal bushings, strengthened internal fan blade. This vibration sounds like it's coming from behind the driver's console. The pump is driven by a 3 phase 380 Vac motor, with the motor trying to exert a constant torque (I assume). It seems to be better under very light acceleration. The problem happens when accelerating with moderate (normal) load. Repair and Replace Torque Converter Clutch and Reprogram ECM (PCM) Engine With the vehicle at operating temperature, confirm the condition described in the Introduction. The vibration comes on only under acceleration or constant pedal pressure around 60. A torque converter. Will cruise at 85mph as. I'm having the same problem vibration under load over 70 and goes away around 90 mph, I have taken it to the dealer and they couldn't find any issues other than maybe a tire. under "Application Guidelines" on page 8, and for Ten Series using the Driveline Sizing graph. But it only happens quite occasionally, like maybe once or twice in a 20 mile trip and only for a second or two each time. I cruise along at between 45 and 55 mph with the transmission in OD and torque converter locked up, rpms between 1400 and 1600. That problem changed from slipping to a vibration or a shutter under load at 45 mph to 75 mph. Various types of torque converters have measurable stall torques as well. 2013 VX with 59000 km (+/- 30k miles) trim is "limited". 6R Limited Outback would shudder around 1,600rpm usually when lightly accelerating or when going up small hills. fluid damper and now the vibration is worse. I have a problem with a vibration under power that disappears when you shift to neutral and coast (I was on the freeway at 70mph). It seems to get worse with distance traveled- at the beginning of the journey not too bad. Replace Torque Converter. R & R Torque Converter Clutch and Reprogram ECM (PCM) Engine AWD 7. 7 days in shop. Always has been smooth right after the shift, and through all the gears under a lighter load. If you get vibration doing this test you have pretty much isolated the problem to the transmission. At first, I thought the judder could be a faulty coil pack (it felt almost like a misfire) but it does seem to only happen on light throttle under heavy load (i. The whole car shakes violently under the load and rarely gears down for more power. In the forum you will find an informative tech area, a place for Member’s journals, Vendors with special Members pricing, and more!. 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. The clutch only locks up in 4th (unless you have one of Rodney's modified shift bodies). I checked torque converter pressures and was in spec, it feels like torque converter is flooded with oil. 83k miles (yes its a lot, was being used by 2 people (my wife and I) for work/leisure travel). On the front of the engine I could not really feel a vibration. 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 also checked if torque converter of flex plate. This may be due to high resistance in the torque converter clutch solenoid, which results in lower torque converter lock pressures. Ha ha, On my C4 I managed to bolt my flywheel/torque converter wrong. In the current work a single stage torque converter, was modelled and analysed numerically for evaluating stress distribution and deformation. I thought it could be a tire but it is very obvious at 1-10 mph so that leads me to believe that is way too slow to get a vibration from an out of balance tire. This also seems to wear out the lower control arms prematurely (last one last maybe a year). If I accelerate lightly (read: grandma. I am really at a loss here and do not have a clue what to do. I suppose a deformed torque converter housing could do it - that's where I was going next with this. Just my thoughts. $3,000 laterI still have the vibration like originally had in the seat. The trailer towing was uneventful, typically a good thing with us! No shudder present, however the driveline vibration can be a bit higher due to allowing higher torque in lock-up conditions. There are many different possible causes for a driveline vibration. There is no other like it! Let's first understand the main objective of the converter: A fluid coupler designed to allow the engine to idle smoothly while in gear and transfer. Plus, the motor draws a lot of current at stall, which will quickly drain the battery. The DPC F4300 1600 Stall Quad Disc Torque Converter is an excellent way to get more power to the wheels in your 2003-2010 Ford 6. 1998 Chevy K1500 4X4 5. Lets hope this is the fix as it is very annoying. 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. Here are some possible problems that others have suggested. If the TC was slipping, it should throw a code (P1187 if I remember correctly). 4 Cylinder engines, especially larger displacement ones, are not known for idling smoothly. The car drives just as it did before but. Very often this problem is mis-diagnosed and sometimes transmissions are needlessly rebuilt as a result. You could try this with car in neutral first. The torque converter plays a significant role in transmitting the torque of the engine during the process of multiplication (converter) and coupling (lock-up). now i have installed a built 1974 302 with a 28 oz. Torque Converter Clutch Solenoid. Code section 2313. Learn vocabulary, terms, and more with flashcards, games, and other study tools. I would like to record them and see if I can see anything funny that may relate to the shudder. However, the Check Engine light has come on. I get the car back next week. Lockup torque converters were added to many newer-model vehicles to help with fuel economy. The ring gear and torque converter looked good when I had it apart. Here are some possible problems that others have suggested. our converters are balanced for vibration * All of our. Accelerating Torque = Available Motor Torque - Load Torque. Purpose Of Each Test. Bowling Green told them the torque converter was the problem and to replace it. The TC2 is an asymmetrical torque converter system in which the sheave faces have different angles. Power Torque provides remanufactured engines, cylinder heads, automatic/manual transmissions and torque converters for gas, diesel, fleet and marine applications. Changed the shafts and it went away but still had very slight vibration on take off. It only happens under a light load at these low rpms. solenoid to send ATF under pressure to the lock‐up clutch Modern TCCsolenoids are duty cycled to gradually apply The TCCwill only lock in higher gears The TCCwill unlock under acceleration (TPS input), high load (MAP or MAF) and when braking (Brake Switch) Locking Torque Converter. When moving forward, the torque converter is moving and the engine is pinned steady against the direction it's wanting to rotate and doesn't bounce around, unless. Chad Michael Walber. I'd really appreciate any feedback from you guys!. Transmission problems such as harsh or delayed engagement when shifting into Drive or Reverse, no. If I start driving the vibration > goes away. Sometimes its bad enough to rattle the dash. That to me rules out any driveline issues. Hi Folks, I have a 2014 Titan S Crew cab 4x4, I have 82,000 miles on it, its in great shape, serviced regularly and not abused at all. Goes away when I take foot off of the accelerator. Custom 5" 6061 aluminum driveshaft rated for 1,200hp 7,300trq MORE to come. Stopped off at a local transmission shop and the tech drove it for a couple miles and said he doesn't think it's the transmission, but. On one end, you have your flywheel, torque converter or clutch. The vibration lasts for only about 1-2 seconds and can be minor to very pronounced. That should not happen in a centrifugal configuration that is working properly!. The torque converter is the default coupling device in most of the epicycloidal automatic transmissions (AT) as well as in some continuously variable transmissions (CVT). Will cruise at 85mph as. Anything besides a worn out Torque Converter clutch that might cause the incredible amount of shaking when the transmission tries to lock the TC?. These vehicles may have a condition in which transmission calibration allows a higher than target energy input to the torque converter clutch (TCC) under certain conditions. -Important-The distance from the torque converter mounting lugs to the. Normal cooler line pressure will range from 50 psi to 80 psi , under a load in drive. No one knows transmissions & torque converters like. Imagine doing. If it does not do it when the car is rolling, just when you hit the gas, then its probly not drivetrain. How to distinguish torque converter knock from piston slap? The engine knocks loudly under load after cold start, especially if oil level is low (the lower the oil level, the louder the knock). I followed the advice on this forum and changed the transmission fluid and it fixed the problem. Looks like it's my turn for the Torque Converter Rumble with the 5EAT. Its most prevalent while hauling my camp trailer (~4500lbs). The dealer is going to replace the torque converter Monday under warranty. They need to be able to quickly identify a malfunctioning torque converter or a lockup torque converter that fails to lockup. Basically under light load it shudders/vibrates (at low RPMs) especially noticable in 5th and 6th gear. I noticed this when I had the test light attached. Been getting a Vibration (Banging noise) at around 30mph Cold after a few minutes goes away got under the van today i don't see anything wrong jack all 4 put in gear no Vibration (No Banging) did notice that the Torque Arm bushing is broke and could be causing the problems Factory part is Torque.