Seems to be getting worse at truck ages, as well as cold weather. When worn out, and under a load, the braces are hitting metal to metal, transferring the engine vibration into the frame. Won't know about the hole and torque converter nose until I drop the tranni. Well, I finally located somebody to take a hard look at my vibration Friday (Craigslist is your friend). CVJ loose or failing- check by doing left and right figure 8 turns at low speed in a parking lot. well I would look at a few things that may be possible: 1. After I noticed the buzzing noise I noticed today that under low / very slight throttle between 45 mph - 60 mph there is a deep rumble noise and vibration in the chassis. 0L Power Stroke Diesel :: Torque Converter Lockup Shudder Jan 15, 2016. This is a CVT trans. 0 adds a layer of goofy on vacuum or under boost. The torque converter clutch (TCC) is applied by fluid pressure, which is controlled by a pulse width modulated (PWM) solenoid valve. It is an essential indicator for vehicles to reach its optimized level that the engine and torque converter match properly. The drive shaft was taken out and tested to be true and balanced. 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. 4 Cylinder engines, especially larger displacement ones, are not known for idling smoothly. Causes for excessive torque converter pressure: There are two main causes for excessive torque converter pressure: restrictions in the cooler circuit and modifications or malfunctions that result in high line pressure. Ha ha, On my C4 I managed to bolt my flywheel/torque converter wrong. (Normally a launch shudder or left under hard acceleration. For static analysis of torque converter components centrifugal load and fluid pressure load were considered. Find the appropriate interaxle driveline series for SPL using the Driveline Sizing graph. i TORQUE CONVERTER TURBINE NOISE AND CAVITATION NOISE OVER VARYING SPEED RATIO. Drive, 600 Ft. Hence, in order to increase available torque, an additional five-speed gearboxes from ZF were. if you need to find donor bits this lists toyota transmissions and the models they were installed in these guys in Oz specialise in ATs and torque converter bits n upgrades - may have parts or ideas of interest to you. Anvil Controlled Torque Impact Wrench w/ ONE-KEY. I could really feel the vibration on the tailshaft area of the tranny. Turned out something sheared off to do with were the torque converter goes into the pump at the front of the gearbox. They need to be able to quickly identify a malfunctioning torque converter or a lockup torque converter that fails to lockup. coasting and deceleration it indicates driveshaft oscillation because there's either no load on. The dealer looked at it this week, and claims they can't reproduce the problem. Torque converter elements. If your 700r4 is having a problem with harsh vibration going down the road, it’s more than likely loose torque converter bolts, or a driveshaft that needs balancing. I was very close to trading my 2016 GMC Yukon Denali due to the extreme shaking and vibration coming from the tranny/rear area of the truck. I had a shop swap out the Powerglide for a rebuilt Turbo 350 with a new torque converter. when the shutter occured i saw a discrpancy between these values. The ring gear and torque converter looked good when I had it apart. pressure wax as supplied on high strength nuts) =. I told the tech about vibration and results of shaft swap and he said it was my torque converter slipping due to dirty fluid. In the current work a single stage torque converter, was modelled and analysed numerically for evaluating stress distribution and deformation. The problem happens when accelerating with moderate (normal) load. While I never found exactly what caused the vibration it was gone after the rebuild. In a vehicle with an automatic transmission, the torque converter connects the power source to the load. BD’s TorqForce torque converter was specifically designed to handle the kind of punishment you dish out. I keep getting a vibration, almost feels like hitting a 'rumble strip' on the highway. 4 Cylinder engines, especially larger displacement ones, are not known for idling smoothly. The TC2 is an asymmetrical torque converter system in which the sheave faces have different angles. Fingers crossed. The reason for this new posting is that I just found the owners manual and read it. Rotate the engine clockwise with a socket wrench on the vibration dampener bolt, as needed, so to install the torque converter drive plate bolts. Torque converter clutches are used to mechanically connect the engine to the transmission. The basic function of torque converters is to multiply torque so as to cope up with the reducing rotational speeds. The vibration felt is known as "lockup shudder" and may occur due to a bad engine or transmission as well. Designed with heavy haulers in mind, our torque converters excel in their capacity to remain trouble free under high load applications like towing heavy trailers or long distance towing. Verify concern. Causes for excessive torque converter pressure: There are two main causes for excessive torque converter pressure: restrictions in the cooler circuit and modifications or malfunctions that result in high line pressure. when the shutter occured i saw a discrpancy between these values. I have experienced a vibration from the drive train when cruising at highway speed under light to moderate acceleration when passing 60-65 MPH. Gear and rotor-type pumps are considered fixed displacement. So just as the engine goes to 2000 RPM and a little beyond, the vibration is significantly more pronounced. This also seems to wear out the lower control arms prematurely (last one last maybe a year). It bucks inconsistently and it should be in 3rd gear at this speed. And I also noticed that there's also a pronounced vibration at around 1000 RPM as well. the engine is under more load durrng light acceleration with the converter locked, anytime you have low rpm's and high load that can cause secondary ignition related misfires to be easier to notice. GMC Acadia owners have reported 20 problems related to vehicle shudder (under the power train category). A torque converter is a large doughnut-shaped fluid coupling (10″ to 15″ in diameter) that is mounted between the engine and the transmission. The size of the torque converter (and pump) and the number and shape of the fins all affect the characteristics of the converter. Now the shifting feels pretty rough at those same speeds, but we're not actually feeling the shudder like before. The main function of it is to allow the load to be isolated from the main power source. imposing gear. This solenoid is part of the control solenoid valve assembly, which is located inside the automatic transmission assembly. (It was used by the way. Bad vibration. Well , there is still a slight shudder under the most extreme torque situations. 2 (L86) – Truck and Utility 1 24279495 Torque Converter: 6. Health torque converter. I told the tech about vibration and results of shaft swap and he said it was my torque converter slipping due to dirty fluid. Torque converter was replaced and the transmission was re-flashed back into a learning mode. Replaced the snub mount and it reduced the frequency and severity of the issue. The torque converter needs to be replaced, which requires between $300-$500 for a replacement, lockup, 4L80E converter. Any vibration in any other gear? Got to ask, how many miles on the Ford, How many miles on the Trans fluid, What is the condition of the spline connection and the universal joints? What is the status of the torque converter? Does it shutter in or out of lockup mode ? Most transmission torque converters are locked up by second gear. Reduced Voltage Soft Starters. Subaru Vibration at Idle in Gear Front and rear speed sensors and also the torque converter speed sensor as well ( which might explain the aggressive engine. The heart of the DIWA transmission is the hydrodynamic counter-rotating torque converter. Rumbling, vibration problems on W203 feeds the torque converter lock up clutch and I dont know what to do as the gearbox will be under more load/stress I. A lock-up torque converter clutch is controlled by a solenoid that directs hydraulic pressure to the clutch when it receives an electronic signal from the Powertrain Control Module. I also have a lot of vibes from 3000 rpms and up, but even under no load in neutral. 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. Fingers crossed. I stopped by a transmission shop today and he suggested my problem may be the torque converter. The torque converter reduces engine lugging and provides a hydrodynamic drive mechanism. An 8-5 is almost unheard of here. It almost like its not running on all the cylinders at times. (It was used by the way. This was the outgrowth of the inventions of Dr. 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. The present invention relates to a torque converter used for transmitting torque from a crank shaft of an engine to a manual transmission, and in particular, the present invention relates to a torque converter having both a lock-up clutch and a disengaging clutch mechanism. when the truck is under a slight load (for example from a dead stop up a slight incline, or from a dead stop when making a sharp turn), and i accelerate very lightly, at about 3 mph i get a real quick, loud. Much more noticeable under a load. Rumbling, vibration problems on W203 feeds the torque converter lock up clutch and I dont know what to do as the gearbox will be under more load/stress I. The size of the torque converter (and pump) and the number and shape of the fins all affect the characteristics of the converter. 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. Fingers crossed. A New Generation of the Torque Converter Hughes Performance would like to introduce you to the XTM & XFM series, torque converters. Dealer thought it was a seal. I just had my transmission flushed at the dealership and now the torque converter shudders under light load during lockup, around 35-38 mph. 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. The torque converter clutch (TCC) is applied by fluid pressure, which is controlled by a pulse width modulated (PWM) solenoid valve. 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. Learn vocabulary, terms, and more with flashcards, games, and other study tools. This in turn provides a snapshot of the chassis or engine performance for comparison to the manufacturer’s specifications. Mine started doing it today under similar circumstances as others; 45-55 mph under load wile going up a long hill. Performance Torque Converters for GM, Ford and Dodge from PATC. The vibration lasts for only about 1-2 seconds and can be minor to very pronounced. This is normally in the form of the clutch and you can find an automatic transmission torque converter as a manual transmission does not use a converter. 7 engine with 68,000 miles has developed a shudder/vibration between 45-60 mph. The unit mounting eliminates misalignment of the torque converter drive belt. (The pipe from the exhaust back to the engine has broken off at a weld and maybe had been causing rough-running. 1993 E350 transmission vibration My Ford E350 passenger van with 5. 0 gas engine and a six speed 6L90 automatic transmission. On the front of the engine I could not really feel a vibration. Heat is generated in a torque converter when it is slipping and multiplying torque. Our standard range of torque transducers can measure torque from 10mNm up to 13000Nm. The last piece of info makes me think there is some sort of blockage or restriction in the engine or exhaust system somewhere. 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. Tach needle shows pulse too. As for the Torque Converter, it will do wild things IF the engine has a miss in it under a hard pull, as in a bad spark plug breaking down under a load, like going up a steep hill in lock up. If you locked it before this point you would have less torque to the ground. 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. I checked torque converter pressures and was in spec, it feels like torque converter is flooded with oil. Similar to a clutch in a manual transmission, the lock-up clutch has a vibration damper, which damps the oscillations during the torque converter lock-up phase. The cost to replace a failed transmission torque converter clutch solenoid is determined, in part, by the vehicle year, make and model. 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. Delivering controlled torque output for fastening and up to 1,100 ft-lbs of nut-busting torque, this new solution allows technicians to perform faster tire service without the hassle of pneumatic hoses, compressors and torque sticks, said the company. Flex plate bolts up easily. The torque converter is the route if the problem. Re: Towing Vibration help needed I had an older Jeep that did about the same thing. pdf), Text File (. com offers the lowest prices for genuine 2007 Dodge Ram 2500 parts. finished my Torque Converter lock up override switch today. The torque converter clutch (TCC) is applied by fluid pressure, which is controlled by a pulse width modulated (PWM) solenoid valve. I need to get the final tune with the new block. It runs fine at speed, but if I gas it, it shudders. (recon torque converter). It sounds like your intermediate clutch pack has worn out. It's a mechanical clutch in the torque converter that, when engaged, locks the torque converter parts together making a dir. The test bench for torque converter, hydraulic transmission or coaxial gearbox adopts the modular structure and fully utilizes cast iron platform, drive motor, load motor, sensor and fixture through the different combinations. The converter output voltages are used to match the power supply required to the loads. Methods of Verification of Main transmission gear Boxes On Test Bench Using Vibration Measurement ratios (I to IV). However, vibration problems can happen when these torque converters go bad. I say normal because my 95k mile 2004 pilot vibrated under light load and low rpm the entire time I owned it (from new for 7 years. An approximate analytical solution for pure slip-type transients is first obtained and confirmed with computational studies. 0L Power Stroke Diesel :: Torque Converter Lockup Shudder Jan 15, 2016. The main function of a transmission torque converter is to transfer any rotating power from the engine or electric motor to a rotating driving load. The clutch plates within the lockup torque converter are shearing off in pieces. I don't have any history on the vehicle so, no idea what happened prior to Feb 2017. If you take all three torque converter bolts out and rotate the converter one bolt hole and then re-bolt the torque converter back up it changes the position of the weight and sometimes makes the vibration go away or could make it worse. I have a 2015 Cadillac ATS with only 12000 miles on itand it drives like crap. The hydraulic torque converter is used to reduce the amount of mechanical linkage found in a manual clutch. The dealer has said it is the torque converter and they are replacing it under warranty. If a fluid coupling is not utilized, an oversized motor or a special high-starting-torque motor may be required. 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. 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!. Been searching around and haven't seen this yet. Star Case: S1121000005 Release Date: 6/30/11 Symptom/Vehicle Issue: Customer indicates that the vehicle has a slight moan, drone, or rattle noise and sounds as though it is coming from the exhaust, The customer may indicate that the noise occurs under light load (1400 - 1700 engine rpm -. Just under 2000 miles I noticed the shuddering and found a ton of other people with the same issue. The whole car rumbled and jerked noticeably on a 100 mile trip from Michigan to Indiana. Tagged as:Application, Get Curious. Cruisin' down the highway at 70 mph plus the car is smooth as a baby's butt -- no vibration. The present invention broadly comprises a vibration damper assembly for a torque transmitting device. The technology behind our torque sensors are strain gages. The fluid cycles through the turbine imparting torque, the fluid is recycled through a stator to complete a loop. We proudly remanufactured over 700,000 torque converters in over 33 years. STARTABILITY Startability is a vehicle’s capability to launch and pull a load. If I accelerate lightly (read: grandma. 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. An 8-5 is almost unheard of here. GMC Acadia owners have reported 20 problems related to vehicle shudder (under the power train category). The motor starts under minimal load (good for minimizing current spikes) and accelerates the fluid using the impeller. Figure 1 Tightening Fasteners Transfers Energy 1. Yes, my Jeep Liberty 2007 has had this problem with TWO torque converters replaced (see DTC P0732)–still needing a third torque converter or new transmission. We make torque converters for all makes and models: on highway, off highway, as well as OE converters in small runs up to 20,000 a year. That is major surgery as the rear bumper is removed and the rear drivetrain is completely removed and put on a bench. There are two general sizes of TF 727 torque converters. He found that 3 motor mounts were busted. Torque converters come from the factory welded up, so its pretty hard to get a look inside and see what makes them tick. Transmission Oil Pump. Sounds normal to me. I have experienced a vibration from the drive train when cruising at highway speed under light to moderate acceleration when passing 60-65 MPH. Bowling Green told them the torque converter was the problem and to replace it. Very often this problem is mis-diagnosed and sometimes transmissions are needlessly rebuilt as a result. The vibration felt is known as "lockup shudder" and may occur due to a bad engine or transmission as well. Transmission fluid dripping from bottom of the vehicle. Torque, 2 Batteries, Model# 2861-22. torque converter system. I would like to record them and see if I can see anything funny that may relate to the shudder. Failed torque converter can cause the transmission to overheat. An 8-5 is almost unheard of here. When I turn on the A/C the vibration gets a little deeper then settles back out to normal. 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. Also note the RPM vibration occures at. during torque converter flex lock up. Torque converters come from the factory welded up, so its pretty hard to get a look inside and see what makes them tick. All 340's up to 72 were internally balanced. Improvised Torque Wrench ; Bolt Torque Calculator. 99 times out of 100 it doesn't happen at all. Normal Torque converter lockup vibration. Your symptoms point to either a weak center bearing or a weak driveshaft coupler flex disc (guibo). If you open the throttle up slightly with the torque converter and OD still locked the sound goes away. Use our torque wrench testers for click, dial, hydraulic, impact, and manual wrenches. If the vibration stops, with the torque converter disconnected, the problem is found. In other words, stall speed is the engine RPM at which the torque converter transfers the power of the engine to the transmission. com offers the lowest prices for genuine 2007 Dodge Ram 2500 parts. 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. A torque converter is a large doughnut-shaped fluid coupling (10″ to 15″ in diameter) that is mounted between the engine and the transmission. Vibration under load Under load (the more torque, the more shake), the front vibrates. Highlights: Material : Plastic, Metal Turbo power for torque and speed boost in hammer mode Best power to weight ratio of 14. when the shutter occured i saw a discrpancy between these values. I have started noticing what I believe is called "shudder" from my tranny under. Exact same problem as in April of '11 and dealership swears because "they fixed it in April" then this is clearly a brand new issue. Torque converter was replaced and the transmission was re-flashed back into a learning mode. Torque converter elements. I've had this vibration problem since new. our converters are balanced for vibration * All of our. One of the classic symptoms of a bad torque converter is a vehicle that is sluggish or lugs when starting out from a dead stop. If you need assistance in choosing a torque sensor to meet the requirements of a specific application, contact us via Live Chat!. Torque Converter to Flexplate If you have an ATS Diesel Performance 5-Star Torque Converter, you will use all 12 of the holes in the flexplate’s outer perimeter (using the 12 bolts that were included with the torque converter). Subaru Vibration at Idle in Gear Front and rear speed sensors and also the torque converter speed sensor as well ( which might explain the aggressive engine. tranny/torque converter ? 1992-1996 Ford F150. I have a 2017 A8 Z06 and would like to unlock the torque converter to see if a shudder I have goes away. 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 three elements of the torque converter are the Pump, the Turbine, and the Stator. Reduce the throttle to slightly open and the rumble / vibration comes back. droan at 300Kms under light load in the 1400. No vibration at all at idle or slower speeds/ lower gears. A looser torque converter. I am also no mechanic. Matchmark made earlier will help, then tighten to 270 inch lbs. The rubber in both of these assemblies can be weak enough to cause the vibration, but can still appear OK visually. (It was used by the way. They have been on the phone iwht Honda Hotline and sending them data to confirm the diagnosis be fore they rip my E apart. • After starting up the motor, one torque converter is fi lled. The vibration is likely the Torque converter lockup clutch chattering under load, which is going to cause accelerated wear, and the wear pattern caused during this chattering may tend to make the clutch chatter more likely or less likely to occur in the future. Florida Torque Converter wants to help you get the most performance from your vehicle. The clutch. An auto parts store scanner detected the P2757 code, which the printout says is the Torque Converter Clutch Pressure Control Solenoid Control Circuit Performance or Stuck Off. many times a shuddering concern in high gears whne the tourqe converter is locked is a engine misfire. lots of info like ratios there too. Check for fluid leaks. it will start this heavy vibration/shudder/shake. 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. There is a service bulletin from GMC. Also it might just be me, but it feels like the accelerator is also vibrating a bit at the same time. But it is still there at times; above 3000rpm and or under load in 2,3 or 4th gear on the tiptronic (so the torque converter is in lock up mode) and always above 30km/h. As for the Torque Converter, it will do wild things IF the engine has a miss in it under a hard pull, as in a bad spark plug breaking down under a load, like going up a steep hill in lock up. It is felt when the accelerating from full stop as well as when accelerating from high speed to higher speed. This was the outgrowth of the inventions of Dr. A Camry transmission torque converter is responsible for transferring the rotating power derived from a prime move into the rotating driven load. Torque converters are very reliable devices. I never mentioned it to Anth when he serviced it because I didn't think much of it, however when on the hoist he advised my left front drive/cv axle was buggered as it was clunking when the tyre rotated by hand. I got a new shaft for $175 and fitted it myself and not the vibration is fixed. A DISSERATION. are all advantages attributed to the patented heavy-duty Allison torque converter. He found that 3 motor mounts were busted. • To eliminate the possibility of front seal leaks, vibration, and premature bushing wear, all torque converters are tested for leaks, lock-up, concentricity, and balance. A better way to say it might be: the total load under several bolts will be the sum of the tensions under each bolt. I cruise along at between 45 and 55 mph with the transmission in OD and torque converter locked up, rpms between 1400 and 1600. A looser torque converter. Normal Torque converter lockup vibration. Well , there is still a slight shudder under the most extreme torque situations. What was wierd is there was never a vibration shutter until the road speed was 60+ mph and only under light load. The best way to tell is that when you do a trans fluid service, the smaller torque converter takes less fluid to get to the "FULL" mark on the trans dipstick. I've also had the rumble strip feeling a couple times. The torque required by the pump changes as a function of crank angle (like in a single piston engine). I have had a vibration under acceleration since I got the car 7 years ago (with only 70000kms). The torque converter turns while the transmission is in park and neutral, therefore, any noise from the torque converter will occur while the vehicle is in gear. Torque Converter Clutch Solenoid. In the real world, the torque converter's stall speed roughly equates to the clutch engagement point on a manual transmission. In the current work a single stage torque converter, was modelled and analysed numerically for evaluating stress distribution and deformation. A torque converter shudder is a brief shake or shudder in the vehicle when the torque converter goes to lock up. The whole car shakes violently under the load and rarely gears down for more power. Has anyone ever heard of the flexplate knocking against something, or the torque converter knocking as it fails?. They have had a number of complaints about this from what I have been told. of impact energy Outstanding power in a 2 Inch SDS-max tool Vibration control for comfort in all day applications Constant response for soft start, constant speed under load Vario lock. 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. A knock might be heard in gear under load, but not in park at idle. According to aspects of the present disclosure, enhanced damping is used to compensate for driveline vibration so that torque coupling lockup may occur smoothly at low vehicle speeds to improve engine fuel economy. The tech said it was something to do with the locking torque converter. If you put a little load on it, the pulse goes away. The transmission seems to shudder when driving on the highway in top gear. 23 kb) 16-74-09 5AT Torque Converter Shudder/Vibration Service Bulletin #16-74-09 Pages: 2. Now the shifting feels pretty rough at those same speeds, but we’re not actually feeling the shudder like before. 60% of the Driveline Series Selection torque from Step 5 and the OLGR from Step 4. headers, new harmonic balancer, trw pistons, scat rods. The test bench for torque converter, hydraulic transmission or coaxial gearbox adopts the modular structure and fully utilizes cast iron platform, drive motor, load motor, sensor and fixture through the different combinations. ??? Have you had recent transmission work done, has the converter been emptied. That should not happen in a centrifugal configuration that is working properly!. A few things come to mind: * A bad vibration damper on the crankshaft. Still getting vibes on highway when ECO light comes on after rear motor mount was replacedam I looking at a bad torque converter?. Flip the toggle switch to position one, and the lock-up clutch is engaged, so transmission temperature remains low and the exhaust brake can work with 100% effectiveness (this is a manual setting and should only be selected under light. We put the edelbrock total power package in it including heads, cam, lifters, air gap intake, hooker comp. 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. I get the car back next week. This is resulting in the coupling seeing a torsional vibration. Basically under light load it shudders/vibrates (at low RPMs) especially noticable in 5th and 6th gear. They noticed the right front drive shaft was starting to bind so they replaced it. It has to be engine/transmission related. There isnt anyway to tell what fluid is in it. It is barely gripping, and cannot engage under load, but once the load decreases it can engage. The mounts all have rubber inserts in them to absorb vibration and if the rubber starts to deteriorate or drycrack it can cause a vibration, especially under load. The efficiency of this converter, at this speed, is 72% (1800 divided by 2500). 6R Limited Outback would shudder around 1,600rpm usually when lightly accelerating or when going up small hills. Gear and rotor-type pumps are considered fixed displacement. 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. I cruise along at between 45 and 55 mph with the transmission in OD and torque converter locked up, rpms between 1400 and 1600. If there is vibration under acceleration, the chances are that you have worn universal joints. Dealer did the flush and software- but the vibration remains. I drive a 2011 GMC Sierra 2500HD ex-cab 2wheel drive with a 6. I was told it was the torque converter, the transmission, etc. Various types of torque converters have measurable stall torques as well. Well, I finally located somebody to take a hard look at my vibration Friday (Craigslist is your friend). He is $190 to change and fluids, and quoted me $1100 to change the torque converter. Performance Torque Converters for GM, Ford and Dodge from PATC. 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). What you are most probably feeling is called a lock up clutch. Failed torque converter can cause the transmission to overheat. While I never found exactly what caused the vibration it was gone after the rebuild. CVJ loose or failing- check by doing left and right figure 8 turns at low speed in a parking lot. The Carraro BHL Drivelines are completed by the extensive Torque Converter Transmission product line, with 3 Speed Shifting Technologies: Synchro Shuttle, Power Servo Synchro and Power Shift. This vibration happens parked and at each gear (as you increase in speed) at that certain RPM (under a load). They don't "increase" noticeably. I could not nor would concede to a transmission replacement or that of the torque converter since it ran fine and no codes in the computer accept for this third gear issue. The vibration can be felt in the front seats, in the door and very slightly in the steering wheel. Although the fluid coupling and torque converter is commonly known to be used in automotive automatic transmissions, they are used extensively in heavy industry and marine applications. (It was used by the way. This also seems to wear out the lower control arms prematurely (last one last maybe a year). However, the Check Engine light has come on. Rotate the engine clockwise with a socket wrench on the vibration dampener bolt, as needed, so to install the torque converter drive plate bolts. This torque converter features four discs to hold 1000 HP for race use, a billet front cover to minimize flexing due to higher horsepower, and Torrington bearings for strength and durability. Turned out something sheared off to do with were the torque converter goes into the pump at the front of the gearbox. of impact energy Outstanding power in a 2 Inch SDS-max tool Vibration control for comfort in all day applications Constant response for soft start, constant speed under load Vario lock. I think they are trying to ge tthe E to make the vibration while on a lift and taking some data from the CPU and sending it off. Dealer did the flush and software- but the vibration remains. In short, the torque converter is filled with transmission fluid and have a "fan" or turbine like unit inside of it. The dealer has said it is the torque converter and they are replacing it under warranty. 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. 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!. Machine seems to have a load on it when running it. Mid-Torque Impact Wrench Kit with Friction Ring — 1/2in. It bucks inconsistently and it should be in 3rd gear at this speed. The electromagnetic torque converter, which is an electric system comprised of a set of double rotors and a stator, works as a high-efficiency transmission in the driving conditions of low gear ratio including a vehicle moving-off and as a starting device for an internal combustion engine. Approximate Torque Nm Grade 4. Improvised Torque Wrench ; Bolt Torque Calculator. I was very close to trading my 2016 GMC Yukon Denali due to the extreme shaking and vibration coming from the tranny/rear area of the truck. are all advantages attributed to the patented heavy-duty Allison torque converter. At the same time, torque is limited, load sharing is facilitated and torsional vibrations are dampened. Use light cuts to. 7 days in shop. It seems to be better under very light acceleration.