| I was lucky. Its most prevalent while hauling my camp trailer (~4500lbs). I'm thinking torque converter and/or transmission. I just had my transmission flushed at the dealership and now the torque converter shudders under light load during lockup, around 35-38 mph. Is there something that can be adjusted to try to tune out the shudder or slipping or whatever might be going on?. Twelve pressure taps in conjunction with liquid-filled pressure gauges monitor pressures within the component under test. Datsun, however, has gone the CVT route, which contrasts with the segment trend of fitting automated-manual (AMT) instead of conventional torque-converter automatic transmissions. I was hoping the additive would be just enough to affect the lockup clutches in the torque conv. I spent hours pouring through wiring diagrams and manuals to learn, study and construct my own loom to get it right. It takes place of mechanical clutch in an automatic transmission. Diagnostically, this feels like torque converter shudder. Mechanical override: Lockup torque converters. I have experienced a vibration from the drive train when cruising at highway speed under light to moderate acceleration when passing 60-65 MPH. I would be willing to guess that the shaft is no longer concentric and the vibration is due to it being warped. I originally thought driveline, so I sent it out for new u-joints and center bearing. This is a CVT trans. Code section 2313. The most recently reported issues are listed below. Replace the converter. From this data, power (HP or kW) can be calculated. I would next check the condition of the engine, transmission and transfer case mounts. Seating and Sealing: By applying the higher initial seating torque to seat the un-marred HDPE faces, without gaskets, the final residual bolt torque (RBT) at the HDPE sealing stress is sufficient to contain flow-stream pressure under operating conditions. There are two general sizes of TF 727 torque converters. 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 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 is a CVT trans. My flush didn't work and I am back at the dealer for a 3rd time waiting for GM to either swap the trans or torque converter. I was lucky. And I also noticed that there's also a pronounced vibration at around 1000 RPM as well. It may be necessary to compare the operation of the vehicle to a known good unit under the identical driving conditions as the operation may be characteristic. Has anyone had this problem before and know the potential causes? Chrysler group actually does not recommend flushing. finished my Torque Converter lock up override switch today. The stated that a large puddle of transmission fluid leaked from the exhaust pipe. Changed the shafts and it went away but still had very slight vibration on take off. We carry a full line of Comet Torque Converters, jackshaft sprocket, driver, as well as a full line of replacement parts and tune up kits at discount prices for different makes and models of go karts including Comet, Yerf dog, Murray. I got a new shaft for $175 and fitted it myself and not the vibration is fixed. Dealer found source of leak to be a bad Torque Converter. I do not think its the transmission or torque converter causing this issue. A torque converter is a type of fluid coupling which is used to transfer rotating power from the engine of a vehicle to the transmission. Tubing Do’s And Don’ts Don’t take heavy cuts on thin wall tubing with a tubing cutter. 8 liter gasoline engine has a vibration at about 35 to 40 mph, especially under load like going up hill. Precision remanufactures 2700 different types of converters - over 500,000 per year. Where to Buy. 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. Torque converter was replaced and the transmission was re-flashed back into a learning mode. then its gone. The stated that a large puddle of transmission fluid leaked from the exhaust pipe. Lockup torque converters were added to many newer-model vehicles to help with fuel economy. Still a slight vibration under heavy 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. Next I thoguht it could be the torque converter on the tranny but I would think that I would have some shifting/power transmission issues if that was the cause. We've worked on a lot of PTC torque converters, and I have yet to ever seen one that was ballooned. I stopped by a transmission shop today and he suggested my problem may be the torque converter. In 1938, the company got succeeded with its first torque converter and its application as a drilling rig. Hi There, There have been a number of issues recorded with the original Torque Converter on some G300 Profs. The whole car shakes violently under the load and rarely gears down for more power. As some have described, it was like going over rumble strips. The shudder is now gone, but has been replaced by a number of other symptoms. Blamed my tires. The torque figures quoted have been based on a theoretical bolt load equal to 85% of the proof load of the bolting material. When transmission was dropped, dealer determined fault to be the Torque Converter. 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. 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. Flywheel Dynamic Balancer, Vertical Balance Machine, Single Plane Balance Machine manufacturer / supplier in China, offering Jp Jianping Torque Converter Pump Impeller Flywheel Dynamic Balancer, Good Quality Balancing Machine, Rotor Balance Machine with Belt Drive and so on. 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. If it is trying to go into lock-up mode and cannot (which would only happen at highway speeds), the torque converter could be having vibration issues. 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. In this video I'll be diagnosing a vibration issue on my 05 Honda Odyssey. They have been on the phone iwht Honda Hotline and sending them data to confirm the diagnosis be fore they rip my E apart. 2 (LT1) Corvette 1 Warranty Information. The vibration is there when driving but also when running the engine in park. Traveling at interstate speeds (50-60 mph), as the suburban starts up the hill, it struggles to maintain power and speed begins to drop. GMC Acadia owners have reported 20 problems related to vehicle shudder (under the power train category). Ford Torque converter Bad sounds. This assists in allowing your vehicle to continue running, even once it has stopped completely. The level of vibration is high and it can be felt all over the car. The transmision shop did find a damaged tranny. Replaced the snub mount and it reduced the frequency and severity of the issue. If it balloons, it's permanent and the converter is usually junk after that happens. Ha ha, On my C4 I managed to bolt my flywheel/torque converter wrong. If it vibrates underload then goes way at the top end of rpm range, check you Coil Pack. It's vibrating when it's on the verge of lockup (moderate speeds, low rpm and light throttle position. flexplate & 28 oz. Inspection of the suspension and steering systems show nothing wrong there. 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. Failed torque converter can cause the transmission to overheat. Thanks for your response! I've checked the tranny fluid and it looks pink and good. 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 Honda Odyssey Torque Converter class action lawsuit complaint reportedly asserts claims for alleged violations of the California Consumer Legal Remedies Act, violations of unfair business practices act, fraud, breach of written warranty under the Magnuson-Moss Warranty Act, and breach of express warranty under Cal. transmision gears. 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!. When AFM is active, the torque converter lockup clutch is continuously and actively modulated to reduce the transfer of engine vibration to the rest of the powertrain and the passenger cabin. An out-of-balance or damaged torque converter will also shake the vehicle. When you put your car in gear, your torque converter is putting a load on the engine. 0 adds a layer of goofy on vacuum or under boost. Torque Converters Cat Reman Torque Converters undergo a strict remanufacturing test that: • uses lightweight oil to simulate load conditions, ensuring minimal internal leakage. 2362 Content on this site produced by www. If you have a shudder under load it could be a problem with the converter clutch, or it could be due to a problem with the EGR system causing the engine to misfire under load. In a vehicle with a known good torque converter, Engine Speed, Input Shaft and Output Shaft speeds will all be smooth. Has anyone ever heard of the flexplate knocking against something, or the torque converter knocking as it fails?. 10, hot dip galvanized =. What was wierd is there was never a vibration shutter until the road speed was 60+ mph and only under light load. kylesconverter. The Allison 1000 transmission is a 5 speed automatic with a single disc lock-up torque converter. 25, and plain non-plated bolts (as received) =. I have had a vibration under acceleration since I got the car 7 years ago (with only 70000kms). • checks and sets lock-up valve. I lived with mine for a year and pursued all available channels for a fix. I stopped by a transmission shop today and he suggested my problem may be the torque converter. 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. Occurs at steady speed or under slight acceleration. That problem changed from slipping to a vibration or a shutter under load at 45 mph to 75 mph. Approximately anything over vacume vibration occurs whether from a roll on or right upon taking off. Torque Converter Clutch. (recon torque converter). I suspect that it's there when driving around town but not as noticeable at slower speeds and/or starts and stops. Torque converter lock up IGOTACUMMINS is an online forum and community for all Cummins Turbo Diesel enthusiasts. 23 kb) 16-74-09 5AT Torque Converter Shudder/Vibration Service Bulletin #16-74-09 Pages: 2. 73 gears, the TC will lock up at 40mph under a really light load, and is forced locked at 75mph. All - I have a 2010 S550 4matic. Also replacing both lower control arms and passenger side inner tie rod end this week. However, vibration problems can happen when these torque converters go bad. I learned this in a tech bulletin found on this forum, after the fact. I could really feel the vibration on the tailshaft area of the tranny. 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. This warranty is in effect for 60 months or 60,000 miles, whichever occurs ﬁrst, from the vehicle’s in-service date. Description of the Related Art. I occasionally feel a momentary slowdown as if something is placing additional load on the engine (it feels like taking a big wind gust head on). Bowling Green told them the torque converter was the problem and to replace it. Looks like it's my turn for the Torque Converter Rumble with the 5EAT. 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. Servicing up to date with the dealer (which by the way is very expensive). Take an automatic transmission snapshot and forward it to Tech Line using the RO number. This also seems to wear out the lower control arms prematurely (last one last maybe a year). droan at 300Kms under light load in the 1400. The dealer is going to replace the torque converter Monday under warranty. That is my understanding. 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. It would engage with the starter fine -- so felt good at first -- but would hear funny noise when accelerating engine. On the other hand, the characteristics of the brake at low speeds do not allow obtain real moments of gearbox load. But my transmission guy says it could be a bad torque converter or flex plate. I was lucky. Tapping the brake, releasing the gas pedal or accelerating harder will stop the vibration. 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. See real-world Saturn VUE transmission problems and repair histories as reported by other Saturn VUE owners. Always has been smooth right after the shift, and through all the gears under a lighter load. The total "pressure" under several bolts will be the sum of the "pressures" under each bolt. The torque converter is locking in at too low of an RPM and therefore trasferring the uneven firing of the engine pistons into a vibration that can be felt in the cab. AFM makes shudder more likely and increases wear of the lockup clutch. I believe it is the original. The engine operating speed at 2000 rpm was considered for analysis. 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. The calculator below can be used to calculate the torque required to achieve a given axial bolt force or load. However, with a properly selected fluid coupling, the motor can start under no load (point C), and reach its breakdown torque in only a few shaft revolutions. 2004 c5 corvette with automatic transmission. There is a service bulletin from GMC. This fastener bolt torque calculator will Estimate the unknown torque, diameter, axial force applied and coefficient of turning friction for the given conditions. I have heard about some transmission additives that should eliminate the shudder completely. The clutch plates within the lockup torque converter are shearing off in pieces. This article has too much of an automotive bent. The engine-torque converter unit is then mounted to the frame of the machine through vibration isolation bushings. I've had this vibration problem since new. Just spitballing here really but if the problem only occurs while under load I'm wondering if you don't have a bad torque converter. There is a hole in the flywheel to allow access to the torque converters drain plug -- I blocked it by mistake. I keep getting a vibration, almost feels like hitting a 'rumble strip' on the highway. But transmission overheating, I believe, can cause torque converter failer too. 99 times out of 100 it doesn't happen at all. Very often the problem is a torque converter shudder. A vibration has developed in the last 6 weeks during vehicle operation between 45 to 55 mph when under cruising speed load. Install the starter and cooler line bracket. An out-of-balance or damaged torque converter will also shake the vehicle. He found that 3 motor mounts were busted. For all other torque converters, you will only use 6 bolts, inserting one in every other hole of the Flexplate. That should not happen in a centrifugal configuration that is working properly!. Florida Torque Converter wants to help you get the most performance from your vehicle. 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. My dad (certified Deisel mechanic) is telling me that he thinks it is a cracked flex plate or loose torque converter. Mid-Torque Impact Wrench Kit with Friction Ring — 1/2in. was due to both front axels spraying grease when under load, luckily it was a slow day at the honda dealership so 4 techs rode in the car together to solve. We stock over thousand of torque converters. The sound is similar to piston slap, i. What it turned out to be is a slight engine miss, that turned out to be a weak #6 cylinder compounded by a sticking or sluggish to disengage torque converter clutch. A knock might be heard in gear under load, but not in park at idle. it may slightly unlock the torque converter to avoid an rpm range containing a resonant vibration. One time I stopped at Iowa 40 truck stop and filled with their premium diesel and I could,nt believe how quiet and smooth the engine was. Only under load at higher speeds/ higher gears. The whole car rumbled and jerked noticeably on a 100 mile trip from Michigan to Indiana. Took it to my dealer and they diagnosed it as a torque converter issue. It aall still spins when not under load. under "Application Guidelines" on page 8, and for Ten Series using the Driveline Sizing graph. 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. The basic function of torque converters is to multiply torque so as to cope up with the reducing rotational speeds. At the same time, torque is limited, load sharing is facilitated and torsional vibrations are dampened. 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. And the torque converter is what is going to experience the load. D'ARCY, JR. 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). Driving in a lower gear reduces the amount of slip and heat. If a fluid coupling is not utilized, an oversized motor or a special high-starting-torque motor may be required. Very often this problem is mis-diagnosed and sometimes transmissions are needlessly rebuilt as a result. This shudder may be observed while driving under light throttle conditions between approximately 25 - 50 mph. From what I have read, it should lock in at a minimum speed of about 45 mph. 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. Since the car won't move, the engine has to. I was lucky. during torque converter flex lock up. Took me along time to get to the answer which is a pretty simple inexpensive fix. 60% of the Driveline Series Selection torque from Step 5 and the OLGR from Step 4. Hydraulic transmission, device employing a liquid to transmit and modify linear or rotary motion and linear or turning force (torque). Apparantly it is out of balance and as you accelarate you drive through the vibration. A looser torque converter. Said it damaged the bell housing as well. It has to be engine/transmission related. There are two general sizes of TF 727 torque converters. 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!. Ford Torque converter Bad sounds. Hi Deano, I have a S2 VS with 145000kms. During lock-up, torque converter slippage will be eliminated and fuel mileage will improve. 99 times out of 100 it doesn't happen at all. It would be speed dependent, not throttle dependent. what else could cause this vibration? under a slight load it felt like the rear axle was. Not right at all. The torque converter is the unit that transfers the force from the engine to the transmission gears in a smooth way. ATS Upgrades for the Allison 1000 Transmission. now i have installed a built 1974 302 with a 28 oz. 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. 7 engine with 68,000 miles has developed a shudder/vibration between 45-60 mph. 23 kb) 16-74-09 5AT Torque Converter Shudder/Vibration Service Bulletin #16-74-09 Pages: 2. For all other torque converters, you will only use 6 bolts, inserting one in every other hole of the Flexplate. The torque converter is a fluid coupling, so it doesn't engage or disengage. indicator when driven under heavy load conditions such. Torque converter shudder fells like a slight to heavy vibration in the transmission, and is usually accompanied by an interruption in power transfer. A better way to say it might be: the total load under several bolts will be the sum of the tensions under each bolt. Imagine doing. The basic function of torque converters is to multiply torque so as to cope up with the reducing rotational speeds. When transmission was dropped, dealer determined fault to be the Torque Converter. The application is for a reciprocating piston vacuum pump. Submitted in partial fulfillment of the requirements for the degree of. Both torque converters are matched to each other and alter-nate as the control unit. Various types of torque converters have measurable stall torques as well. Only under load at higher speeds/ higher gears. An 8-5 is almost unheard of here. 2362 Content on this site produced by www. 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. 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. Power Torque provides remanufactured engines, cylinder heads, automatic/manual transmissions and torque converters for gas, diesel, fleet and marine applications. 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. This may be due to high resistance in the torque converter clutch solenoid, which results in lower torque converter lock pressures. Sometimes its bad enough to rattle the dash. 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. If I accelerate lightly (read: grandma. The output voltage of DC to DC converter can be greater than the input voltage or vice versa. 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. This is a CVT trans. I'm thinking torque converter and/or transmission. I was lucky. The problem is typically diagnosed as a bad torque. It transfers energy via hydraulic fluid. Car however will cruise at light throttle smoothly. 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. vagcom and it will generally keep it from lugging and causing the vibration. I would like to record them and see if I can see anything funny that may relate to the shudder. Torque converters are very reliable devices. If a fluid coupling is not utilized, an oversized motor or a special high-starting-torque motor may be required. 83k miles (yes its a lot, was being used by 2 people (my wife and I) for work/leisure travel). our converters are balanced for vibration * All of our. Reduce the throttle to slightly open and the rumble / vibration comes back. 0L JMBX Torque Converter: to load items when the Enter key is pressed. PATC performance torque converters are manufactured in-house at our state of the art torque converter shop. I was lucky. tranny/torque converter ? 1992-1996 Ford F150. Parts like Torque Converter Oil Cooler & Plumbing are shipped directly from authorized Mopar dealers and backed by the manufacturer's warranty. When you are coasting or idling, the engine and drive train are 'at rest'. The torque converter is the route if the problem. This is a CVT trans. Installing a Torque Converter and Flexplate After the first trip to the dyno, we discussed future mods - Robert & Mike both thought that a higher stall torque converter would make a huge difference - I've found that both my cross-fire cars "bogged" at low rpm - lots of noise, but not lots of power. I would say between 2nd and 3rd gear. I would next check the condition of the engine, transmission and transfer case mounts. A vibration has developed in the last 6 weeks during vehicle operation between 45 to 55 mph when under cruising speed load. The transmision shop did find a damaged tranny. The whole car shakes violently under the load and rarely gears down for more power. I originally thought driveline, so I sent it out for new u-joints and center bearing. 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. Health torque converter. com is available under a. The efficiency of this converter, at this speed, is 72% (1800 divided by 2500). There has been over time a vibration that starts at 55mph and stays until just under 80mph. 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. 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. So just as the engine goes to 2000 RPM and a little beyond, the vibration is significantly more pronounced. Someone drilled 3 holes inboard of the 6 to mount the converter, they are so close to the outer holes they intersect. in a lockup torque converter, the _____. We specialize in high performance / heavy duty converters that can be built to your specifications. Guess I will race it wed and see what happens. mine was moving about 100RPM in 6th between 2100-2300RPM when the grinding noise happened. With Diesel engine high torque performance, high-load situations, the torque converter must multiply the torque at low engine RPM to get the truck moving and then the lock up clutch must hold on in peak demand. 2011 Sierra 5. It almost feels like your driving over a rough bumpy road but when I put it in neutral or downshift into 3rd gear it goes away. 73 gears, the TC will lock up at 40mph under a really light load, and is forced locked at 75mph. And he told me that is a terriable solution because it will ruin rubber seals an create larger problems over times. This may be due to high resistance in the torque converter clutch solenoid, which results in lower torque converter lock pressures. We stock over thousand of torque converters. Torque converters are very reliable devices. Transmission fluid dripping from bottom of the vehicle. 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. Torque Converters in many levels for 700R4, 4L60E, 4L80E, 6L80E, 46RE, 47RE, 48RE, AOD & many others. I have a 2015 Cadillac ATS with only 12000 miles on itand it drives like crap. The system operates with the torque sensing cam in an outboard position allowing for in-line operation of the unit. The basic function of torque converters is to multiply torque so as to cope up with the reducing rotational speeds. In 1938, the company got succeeded with its first torque converter and its application as a drilling rig. Very often the problem is a torque converter shudder. If I accelerate lightly (read: grandma. Thanks for your response! I've checked the tranny fluid and it looks pink and good. Florida Torque Converter wants to help you get the most performance from your vehicle. I had a shop swap out the Powerglide for a rebuilt Turbo 350 with a new torque converter. 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)?. Torque Converter System - Free download as PDF File (. Bowling Green told them the torque converter was the problem and to replace it. That is my understanding. A torque converter noise will increase under this load. I am really at a loss here and do not have a clue what to do. A few things come to mind: * A bad vibration damper on the crankshaft. Dealer found source of leak to be a bad Torque Converter. The rubber in both of these assemblies can be weak enough to cause the vibration, but can still appear OK visually. the issue was known by acura in apr 2004 (recall), we bought the car new in may 2004 and were never told. Health torque converter. (Torque Converter Clutch. our converters are balanced for vibration * All of our. 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. Yes, a converter body can balloon (expand) under excess pressure, which would force the flexplate and crank forward, but this is rarely the case in a street-driven vehicle. The unit mounting eliminates misalignment of the torque converter drive belt. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Other con-. 8 liter gasoline engine has a vibration at about 35 to 40 mph, especially under load like going up hill. A New Generation of the Torque Converter Hughes Performance would like to introduce you to the XTM & XFM series, torque converters. If that is the case then that vibration you feel is in relation to the truck movement over a roadway. Installing a Torque Converter and Flexplate After the first trip to the dyno, we discussed future mods - Robert & Mike both thought that a higher stall torque converter would make a huge difference - I've found that both my cross-fire cars "bogged" at low rpm - lots of noise, but not lots of power. 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. I have a 2011 Ram 1500 Crew Cab and had the Torque converter changed. * A bad injector, making one or more cylinders either not fire or not fire with the same force as the others. This warranty is in effect for 60 months or 60,000 miles, whichever occurs ﬁrst, from the vehicle’s in-service date. 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. Also please check out the statistics and reliability analysis of GMC Acadia based on all problems reported for the Acadia. 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). It transmits power from the engine to a drive unit. vibration monitoring system / condition with diagnostics / portable OnCare. 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!. 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.