Cracked flex plate noises

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. Hearing a rattle coming from the torque converter area, im no expert so did some googling and came up with a cracked flex plate or loose bolts. I have seen on occasion the torque converter bolts get loose and. Flex plate noises are typically a higher pitched more metallic rapping type noise, while a rod bearing will have a lower pitched knocking noise. Start your vehicle as normal, but pay particular attention to the noise of the starter while it spins and engages the flexplate, or torque converter if your vehicle does not have a toothed flex plate. My chevy started this tick noise out of now where thought about it and yea its the flex plate. A badly cracked flexplate will cause a similar sound to a fan hitting the radiator. The flex plate usually makes a tinny or clanging some times chirping sound while starting,shutting off, accelerating or decelerating. Noises are very hard to diagnose without actually hearing it. A cracked flex plate is almost always a sign of other problems.

The flex plate is bolted onto the end of the crankshaft and is between the engine and transmission. How to know if a flexplate is warped it still runs. If you happen to have a manual transmission, this does not apply. Loose torque converter bolts and cracked flex plates. Proposed the issue was the flex plate rather then the engine. If i put me ear right up against it the noise seems to be coming from inside. Cost to replace a cracked flex plate in a 2014 dodge grand. Just got my engine swapped in recently, and yesterday was the first day i really put any miles on the truck. Slight misalignment may only cause a single flexplate to break in the life of the vehicle. This truck gonna get a lq4 and 4l60e eventually save to say i love her.

Im thinking broken flex plate in my 73 blazer however when im in gear low rpms and rolling down the street i hear the. Discussion in the hokey ass message board started by hudsoncustom, jun 19, 2007. So if you have a knocking noise and an automatic transmission, its a good idea to check the torque converter bolts to see if theyre tight. I have seen a bunch where motor was pulled for said rod knock and broken flex plate was found. When a flexplate cracks, it often produces a loud knocking noise as it rotates. In the case of the latter this can lead to a cracked flexplate, which means back out.

The reason for the sound involves the flexplates location and its function. The flywheel doesnt make any noise, even if its warped. I did not get to thoroughly checked the flex plate. I was just driving and it suddenly reved like kicking the a. Cracked flexplate how can i tell the chrysler minivan. So while youre in there, check the flex plate for cracks or damage, you might just find the source of your noise this way. The vehicles flex plate is an essential part of your driveshaft. With child support killing my paycheck i can barely afford gas in my car to go to work and food for the week. 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. When a flexplate cracks, it often produces a loud knocking noise as.

Start the engine, put in drive, foot on the brake, give it some rpm, does that quiet the noise loose bolts and cracked flex will usually be less noise doing that. Refer to workshop manual, section 30301a and 30701. Furthermore, if not properly diagnosed it will occur again and often damage to the transmission may follow. Sounds like rod knock maintenancerepairs car talk community. Descriptions of the sound include clanking, chirping and a light knocking. 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. Check for the sources of these noises in each of your cars interior storage spaces. Ah, well, this is the first real money ive put into keeping the old girl on the road. Remove the inspection cover from the driver side of the bell housing see if the converter is loose. Oct 15, 2018 if the flexplate is cracked, replace the transmission fluid pump, flexplate, flexplate bolts and torque converter. The engineer put a triangular file on it and had no trouble marking the plate, he said it is just plain old mild steel, and welding would be no troubles.

Those factors ensure that when the engine starts and the driver puts it in drive, the cracked flexplates movement will create a noise. The sound is very similar to a bad engine rod and is often misdiagnosed. If you have a knocking noise from your engine it might not be the engine itself. Jeep grand cherokee questions is it common for a loose flex. This video demonstrates the sound, diagnosis and solution to what sounded like a rod knocking on a 1999 toyota 4runner with a 3. I had the transmission rebuilt thinking it was the flywheel or torque convertor and wasnt the problem but transmission was in bad shape. Do you see any bolts, nuts, or other items that can make these rattling noises when they roll around in there. The classic and most obvious symptom of a cracked flexplate involves the sound it makes while the engine is running. This may occur in worn engines or engine that have been poorly rebuilt. The first signs were visible when i removed the dust cover and turned the engine over. The same things that cause the flexplate to crack can also cause transmission problems. 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. That 1989 corolla of yours makes all sorts of noises toyota hoped it never would, most of which are as harmless as they are annoying, yet some of which can be as detrimental as they are deafening. I just looked at it through the inspection hole but it doesnt seem to be cracked.

Listen for any rhythmic clunking or grinding noise while the engine idles in park or. Uncovering an uncommon flex plate issue twice in one week it. Jan 19, 2011 i have a cracked flex plate im told i might need a flex plate. As the cars flex plate corrodes from exposure, the unit can become damaged and fail. Diagnosing noises in your car page 3 ericthecarguy. If it sounds like it is coming from around the tranny you may have a cracked flex plate. 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. It bolts to the end of the crankshaft and the transmissions torque converter bolts to it. Pull lower pan,check rod movement,or remove bearing cap. Sometimes the flex plate will crack and as a result it can cause noise. Notice if the starter has a low, medium or highpitched whine while spinning. Perform a flex plate test, if you are hearing noises. If you stop hearing the rattling noises, you found the solution. Jun 11, 2019 cost to replace a cracked flex plate in a 2014 dodge grand caravan.

A loose bolt on a flexplate or a crack between its bolt holes. Being an auto, it will be fluid balanced by the torque convertor, so babancing it wont be an issue. Well, the tranny shop tells me that its a cracked flex plate. Come to think of it, its a good idea to also check the flex plate for cracks. No vibrations or anything, but i was getting some bad noises from the converter area, mainly on shutdown. 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. Rattle noise and cracked flexplate 20152018 ford edge.

Those factors ensure that when the engine starts and the driver puts it in. In the event that the cars flex plate is cracked or otherwise damaged, replacement of the old part will be absolutely essential before the vehicle can be driven. Parked truck thurs night and all was good, no odd noises at all. Broken or loose bolts on the crankshaft end of the flexplate, or on the torque. If the bolts are loose or the flex plate cracked it will make noise under a no load condition.

Friday morning, and cold now, had a rattle coming from the transmission. Noisy flex plate, keeps cracking around mount ing fixya. As i was driving into work this morning i noticed a sound that seemed to come from the middle of the car. Nov 21, 2014 my chevy started this tick noise out of now where thought about it and yea its the flex plate. It connects the crankshaft to the torque converter of the transmission. There was a slight wobble in the flex plate, due to the distortion from the crack. Chevrolet silverado 1500 questions loud knocking noise 5. Pulled the inspection plate off last night and took it on a drive, and had a faint grinding, and a rattle. Various engine noises during cold start, warm engine operation. Excessive crankshaft flange runout or end plate can also cause flexplate cracking. Bad rattle flexplateconverter dodge cummins diesel forum. 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.

When replacing the torque converter, ensure that the torque converter pilot hub is lubricated with multipurpose grease xl5a esbm1c930b prior to reassembly. Truck was good and hot from couple hours of driving. A severely cracked flexplate will make a tinny metallic ticking noise. If you have an automatic transmission, you have a flex plate, and it is a possiblity, and it can be checked without removing the engine andor transmission. Oct 19, 2008 evening folks, my 300tdi auto today developed a nasty intermittant knocking, that seems to be coming from the bellhousing area. In this video i talk about a noise coming between the engine and transmission. Trans shifts fine through all gears and converter lock up. The flex plate replaces the flywheel in automatic transmission cars. It makes a bad vibration at about 2k, but not specifically a rattleknock. More severe misalignment can break a flexplate in 15,000 to 30,000 miles. Warped flywheel maintenancerepairs car talk community. Mine cracked between two of the large holes not the bolt holes.