So while youre in there, check the flex plate for cracks or damage, you. Aside from a manufacturing defect, the only things that will cause a cracked flex plate are improper torque on the plate bolts at the. Mine cracked all over the place on me, didnt know it until i was doin some instals though and when i removed the starter i seen some of the cracks. I was driving along the m4 on my way to an important appointment, doing about 60mph in drive, 2500rpm on the possibly inaccurate tachometer, tc locked it locks at 45mph with the 1. Dude, looking at your questions for the past 2 weeks, you should give up trying to fix your own vehicle. They are breaking the center piece with the 6 bolts right out of the center of the flexplate. That in turn was the reason the front seal was not happy.
A vibration felt through the center floor of the vehicle can be caused by cracked andor shredded driveshaft flex discs, resulting in excessive driveshaft movement. I have access to a shoplift and plan to do this work myself and with a coworker. Cracked flexplate how can i tell the chrysler minivan fan. Had the truck 4 days, broken flexplate dodge cummins. Nothing has changed as far as mods go to the enginedrivetrain or suspension for a long time. Exactly the symptoms of my failing flex plate it rattles at idle under no load because the cyclic speed variation of the engine is greatest the acceldecel becomes less significant at higher speeds. How long can i continue driving with a broken flex plate. That had caused it to run slightly off center, which wore a path in the collar on the torque converter. Loose torque converter bolts and cracked flex plates. Learn to recognize a bad flywheel by these 5 symptoms.
Mercedes flex disc problems, symptoms, cost mb medic. If a bolt has broken or become loose, on the flexplate, these can misalign the flexplate. Broken or loose bolts on the crankshaft end of the flexplate, or on the torque converter side, missalign the flexplate, causing a high side of the. Its best to start with the basic ignition stuff if you have a stumble condition, moving on to camcrank sensors etc. A cracked flex plate will usually cause a squeaky sound like a belt but shorter and sharper and changes when in gear or park and under load.
Notice if the starter has a low, medium or highpitched whine while spinning. Uncovering an uncommon flex plate issue twice in one week it. You can not tighten the first tc bolt until you first hand snug all 6 bolts tightening the first bolt put in will not pull the tc evenly to the flex plate. I was just wondering how many of you out there with the 4. Broken flex plate or converter dodge cummins diesel forum. Hello, i own an 03 ford focus and have had the engine replaced twice in the past 6 months as well as two cracked flexplates. It will sound almost like an engine knock but will be heard from the area between the front of the transmission and rear of the engine.
Sometimes the flex plate will crack and as a result it can cause noise. The flex plate dampens this vibration from the engine to the driveline and reduces the noise that we hear. If not properly diagnosed it will occur again and often damage to the transmission may follow. The cracked hub is a little harder, usually experience with cracked flex. Op, youve probably got broken teeth on the flex plate, it is going to need to be replaced eventually, if youre getting an intermittent clicking sound from it just keep an ear on it.
Symptoms of a cracked flexplate welcome to modern mopar forum. I investigated it and it sounded like it was coming from the. A cracked flex plate will usually cause a squeaky sound like a belt but shorter and sharper. The same things that cause the flexplate to crack can also cause transmission problems. Descriptions of the sound include clanking, chirping and a light knocking. Supposedly chrysler has come out with a new replacement plate that will not crack, and it isnt supposed to be that expensive. Because your flex plate transmits the power from your engine to your transmission, your ability to control your vehicles power can be affected. Symptoms of a cracked flexplate general discussion. I have the back seats out so there isnt too much sound dampening back there, and i have been listening for any odd noises over the past few weeks. Then whom ever replaced the fp before me didnt catch the peened bellhousing and tightened it down causing a alignment problem. If it really is the flex plate, thats a lot cheaper than other problems that could cause a bad knock. After some googling and much reading, it looks like i have a cracked flexplate. Those factors ensure that when the engine starts and the driver puts it in. The flex plate replaces the flywheel in automatic transmission cars.
While i have seen flex plates crack throughout my career, it is not a. A loose bolt on a flexplate or a crack between its bolt holes. Learn about the key symptoms of a tibia fracture, treatment options, and more. Listen for any rhythmic clunking or grinding noise while the engine idles in park or neutral, or idling in gear with a foot on the brake pedal.
A good possibility it is flex plate, your description of the card clicking and sounds like a rod bearing are generally good indications of flex plate crackedbroken,with that much noise you ought to be able to see the damage by removing the inspection plate on the trans and rotate the crank by hand turn a full 360 deg to verify. Had me real scared thinking it was the crank or something because of where the noise was coming from. Yeah the ting ting ting noise sounds about right i had a 302 with a broken flexplate, it was cracked between each bolt hole and fell apart in two pieces when i pulled. What causes a flexplate to crack twice after two replaced. If you are breaking a new flex plate in a minimal amount of time, it is probably related to improper installation when bolting up the torque converter. A reconditioned transmission was installed by a transmission specialist 6 months ago. The classic and most obvious symptom of a cracked flexplate involves the sound it makes while the engine is running. Perhaps someone had the transmission out years ago and failed to torque the flex plate to crank bolts properly.
Can i replace the flex plate by unbolting the transmission and sliding it back or do i need to pull it completely out. The reason for the sound involves the flexplates location and its function. Missing dowel pins, bellhousing run out, crankshaft end play, loose bellhousing bolts. I have used the search function and have not found that much about flywheel problems. Cars with automatic transmissions instead use a flexplate that also connects the. When she got back we pulled the trans and the entire center was broken out of the flexplate and it had hammered flat spots into the broken edges of. Usual failure mode is the crankcase bolts or the torque converter bolts work loose, allowing the parts to start moving in different directions, the clicking sound you heard. Excessive driveshaft movement resulting in abnormal vibration in the center floor. Flex plate again chevy and gmc duramax diesel forum. After describing when and at what rpms the noises were i decided it was a broken flex plate and told her there were not many choices out on the road and to drive it home as long as it kept going.
A cracked flex plate is almost always a sign of other problems. The sound is very similar to a bad connecting rod and is often misdiagnosed. You can drop the flywheel cover and inspect for missing weights on either convertor or flex plate. Flexplate failure chevy tahoe forum gmc yukon forum. A problem with your flex plate can be very dangerous. The tibia, or shinbone, is one of most commonly fractured bones in the body. I have had this truck for almost four years now and i have now broken two flexplates within 4 months of each other. As a result, this can cause the flexplate to wobble. If you are talking about a flywheel for a manual transmission equipped car, the most obvious symptom of a cracked flywheel is a knock. Cost of repairing a cracked flex plate land rover forums land. I dont see any leaks except for the pesky damn front pump seal on my transmission second tranny to do the same thing. Maybe the flexplate or converter bolt is loose and not able to spin freely.
My chevy started this tick noise out of now where thought about it and yea its the flex plate. My buddy listened to it yesterday and he said it sounded like a bad turbo, bad torque converter, transmission input shaft or a broken flex plate. The first cracked fp for me i ignorantly assumed the missing torque converter bolt was the problem so i missed the bellhousing problem. Pics of a cracked flex plate peachparts mercedesbenz forum. Aside from a manufacturing defect, the only things that will cause a cracked flex plate are improper torque on the plate bolts at the crank and torque converter and the most common cause of transmission to engine misalignment. So i put it up on ramps and got under it to look and its cracked again. Damaged and leaking front seals and front transmission pumps are common symptoms. A flex plate is the automatic transmission version of a flywheel. Ive gotten a lot of different reasons as to why the shops think its happening and am gathering all the information to pinpoint exactly what it is. If a bone in your elbow is broken or the elbow is out of joint, your doctor may need to reset the bones. The part apparently is not expensive, but the labor is a killer. The flex plate is a steel plate that bolts to the rear of the engine and has gear teeth. And he says he has to pull back the transmission, etc. As i was driving into work this morning i noticed a sound that seemed to come from the middle of the car.
How to know if a flexplate is warped it still runs. I have seen a bunch where motor was pulled for said rod knock and broken flex plate was found. Just wondering what your guy symptoms were when it went out. Furthermore, if not properly diagnosed it will occur again and often damage to the transmission may follow. Upon startup the converter may then seat or not and the weakened flex plate may crack shortly afterwards or it may go months or years before giving up. Had similar noise symptoms but no transmission symptoms in october and was told it was the cracked flex plate. A cracked flexplate is almost always a sign of other problems. When a flex disc is cracked, falling apart, or missing its bolts, these symptoms start to appear.
When the transmission is in place and the trans mounting boltstorque converter bolts are tightened the flex plate is distorted and under a lot of pressure. The flexplate takes the place of the flywheel on automatic transmission vehicles. The problem turned out to be a cracked flex plate which. Knocking or rattling noise from rear of engine abnormal noise when operating engine starter. I have been told by a repair garage that i have a broken flex plate on my 88 yj, at, l6. A couple of weeks ago i started to get a clicking sound that would speed up slow down with engine speed, but i just assumed was the exhaust. Covered under powertrain warranty at the time, fixed, but has broken again. The flexplate has cracked twice in the past 6 months.
I have had a quick look through the starter motor hole and checked that the bolts that hold the torque converter to the flex plate are tight which they are. Turns out the flexplate was cracked all around the bolts holding it to the crank. Well i had the truck since monday, last night, flex plate goes boom. The flex plate could also have cracked at the crankshaft hub. Now im on a hunt for a flex plate as fast as possible and its not going to well. So, following on from my breakdown the car, then nearly me. It bolts to the end of the crankshaft and the transmissions torque converter bolts to it. The whole flex means it needs to flex ats is soild i have broken 2 flex plates also. Anyways, was wondering if anyone else has had flex plate issues were and what the outcome was. Broken or loose bolts on the crankshaft end of the flexplate, or on the torque converter side, missalign the flexplate, causing a high side of the plate to strike or rub against internal components. Converter pilot shaft broken and stuck in crankshaft. Evening folks, my 300tdi auto today developed a nasty intermittant knocking, that seems to be coming from the bellhousing area. On my 3rd one i tryed this u have 6 allen heads holding your flex plate and fly wheel to the back of the crank take out ever other one i have done that and have not broken my flex plate yet. If not repaired, damage to the driveshaft center support bearing, transmission, or differential can occur.
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