Ok, so i replaced my flexplate 290,000 miles to see if that eliminated the lower end noise in my engine. What causes a flexplate to crack twice after two replaced. In this video i talk about a noise coming between the engine and. It covers the front of the tranny a few bolts hold it on. So i put it up on ramps and got under it to look and its cracked again. The sound is very similar to a bad engine rod and is often misdiagnosed. When i first start up my xj it doesnt make the noise but after a couple of minutes it begins to start knocking, it almost sounds like its coming from the front of engine but once you climb under it you can tell its coming from the flexplate area. The flexplate has cracked twice in the past 6 months. A transmission problem car rides good though is there a way to diagnose the. It is fairly quiet for about 5 seconds and then i hear something that sounds almost like a chain draggingsomething loose that soon settles down into a tapping sound. When a flexplate cracks, it often produces a loud knocking noise as it rotates. Cracked flex plate toyota 4runner forum largest 4runner forum. Jan 08, 2016 had similar noise symptoms but no transmission symptoms in october and was told it was the cracked flex plate.
When driving it becomes real noticable when letting off the accelerator to start slowing down. Jan 21, 2006 i have a 2000 excursion 2 wheel drive with the 7. It could be a cracked or warped flex plate, just enough to rub when it gets hot. Proposed the issue was the flex plate rather then the engine.
Oct, 2005 i have a noise under the hood of my 96 legacy gt automatic transmission. I havent dealt with a cracked flex plate before but it took me 2 days to swap transmissions this summer, which is about the same amount of work as changing flex plates just to give you a time estimate. Here we are swapping out a transmission due to a broken flex plate. I checked oil pressure, pulled spark plug boots while truck was running but no change in sound. Jun 14, 2012 a m and i discussed the points in your email. A flywheel is a roundshaped mechanical device that connects to the. Covered under powertrain warranty at the time, fixed, but has broken again. The original plate was in the car for a long time before transmission was replaced, and the problem has occurred since then. And he says he has to pull back the transmission, etc. Anyways, was wondering if anyone else has had flex plate issues were and what the outcome was. Damaged and leaking front seals and front transmission pumps are common symptoms. Oct 15, 2018 rattle noise and cracked flexplate 20152018 ford edge.
But with a crack flex plate if you press and hold the brake pedel and step on the gas pedel just a little the noise goes away with a rod knock the noise. Aug 30, 2014 so my 04 2500hd has a cracked flexplate. 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 it out. Does cracked flex plate makes nocking noise answers. The mechanic said i must have been towing something heavy but i hadnt towed anything or even hauled anything. This truck gonna get a lq4 and 4l60e eventually save to say i love her. A cracked flex plate is almost always a sign of other problems. Power loss at high speeds, the flexplate like most engine parts endures a considerable amount of strain and stress. I was told by several people it could be a cracked flex plate.
The classic and most obvious symptom of a cracked flexplate involves the sound it makes while the engine is running. I just always assumed it was an exhaust leak or loose header. I would have gotten on the ground and checked in the lot but that wouldnt have faired well for my work attire. Jeep grand cherokee questions is it common for a loose flex. Those factors ensure that when the engine starts and the driver puts it in drive, the cracked flexplate s movement will create a noise. Mar 03, 2015 published on mar 3, 2015 in this video i talk about a noise coming between the engine and transmission. I was going to drop the starter and inspect or remove the 3 flex plate to torque. My chevy started this tick noise out of now where thought about it and yea its the flex plate. Descriptions of the sound include clanking, chirping and a light knocking. Its been ticking like this pretty much since i got the jeep 1. I have been told by a repair garage that i have a broken flex plate on my 88 yj, at, l6. Furthermore, if not properly diagnosed it will occur again and often damage to the transmission may follow. Cracked exhaust ended up with transgo stage 3 shift kit, hd flex plate, and billet single disc lock up converter with short cut to allow for flex plate thickness.
It didnt fix the noise but now when i start the truck it sounds pretty bad only while the starter is engaged. Mar 21, 2010 the truck only makes the noise when in park or neutral when the engine is not under a load. The sound seems to happen most on cold days 40 and under. Those factors ensure that when the engine starts and the driver puts it in drive, the cracked flexplates movement will create a noise. Dec 17, 20 i would take a look at the flex plate, sounds like it is cracked. My runner has been making a ticking noise when warmed up for the last 20k miles. The reason for the sound involves the flexplate s location and its function. At first i thought it was comin from the top but when i get under it its alot louder sounds like its comin from the oil pan.
Perhaps someone had the transmission out years ago and failed to torque the flex. Is this a common issue on these have my new one ordered and i dont belive this truck has under drive pulleys never had. It cracked and started making noise around 80,000 miles. I went to the dealer today to buy new fluids that i need for the transmission and the guy at the part. I bought this truck new and custom ordered from the factory and took delivery on october 9, 2003. The part apparently is not expensive, but the labor is a killer. Chevrolet silverado 1500 questions loud knocking noise 5. I checked the flexplate bolts and they all seemed tight, i wasnt able to tighten any of them further than they already were, which leads me to a cracked flexplate. Learn to recognize a bad flywheel by these 5 symptoms. How to fix a broken flex plate flywheel, how to find a. M said he really doesnt know why the flex plate is cracking, but it would be very unlikely that two different engines would have defects that would cause cracking. If its a cracked flex plateflywheel, if you pull the converter.
A reconditioned transmission was installed by a transmission specialist 6 months ago. But honestly it will sometimes happen on warmer days as well. Well i checked torque converter bolts for loosemess and they were fine no sighns of cracked flex plate what so ever im gonna pop off the valve cover as i had it running and drove it up on ramps the knocking noise even under a load could hardley hear it and the longer i had it running the quitter it got that doesnt sound like a rod or main or piston sounds more like a calapsed lifter. It ended up being the exhaust was partially cracked just above the rear differential. Its not your classic lifter noise and i think ive narrowed it down to either a cracked flex plate this may be why my idle has gotten a little rough, a bad timing belt tensioner on the right side or main bearing noise. It was making noise so i unbolted the flywheel for the torque converter and the noise stoped. Also it was just me and a floor jack so if you have good help it probably could be done in. Hey guys i went to start the truck yesterday sounded like bendix wasnt kicking out picked up starter today got old one out not bad to do but to suprise flex plate is cracked.
I have a loud knocking noise coming from the engine. The same things that cause the flexplate to crack can also cause transmission problems. Ticking nise from between the engine and transmission. I was told that a small crack in the flexplate could mimic the sound of rod knock or piston slap. I have seen a bunch where motor was pulled for said rod knock and broken flex plate was found. The truck still runs great and doesnt effect performance at all.
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