Flywheel noise??
Thread Starter
Racer
Joined: Oct 2003
Posts: 304
Likes: 0
From: Marlboro NY
Flywheel noise??
A friend has an 89 6speed car that has a weird intermittent clacking sound that sounds like its coming from the bell housing.
It only occurs when the car idles ~700 rpm or less and goes away under any throttle or driving.
Any Ideas?
It only occurs when the car idles ~700 rpm or less and goes away under any throttle or driving.
Any Ideas?
Racer
Joined: Aug 2005
Posts: 336
Likes: 3
From: State of Confusion
GM designed the dual mass flywheel to take away that noise. If the previous owner had to change out the clutch and flywheel, then he may have opted to install a single mass flywheel. The dual mass flywheels are about a $1000 a pop. If that's what happen the you'll have to live with it until you spend the big money on the dual mass, otherwise it's just another noise that these cars make.
Le Mans Master
Joined: Feb 2006
Posts: 8,753
Likes: 9
From: Louisiana
I had a 85 auto that all of a sudden started making a clanking sound that started out about every 3 sec then about 3 times a second. It did sound like flywheel was hitting the cover. The flywheel was replaced.
Thread Starter
Racer
Joined: Oct 2003
Posts: 304
Likes: 0
From: Marlboro NY
Originally Posted by Vetracr
What your describiing is common problem with a dual mass flywheel with worn or broken springs between the primary and secondary portions of the DM flywheel assembly
Larry
Larry
I highly doubt there is much wear on his 89' it only has about 21000 miles on it. it is a strange sound. he drives it like he is - a grandpa. never revs and always granny shifts.
Racer
Joined: Sep 2005
Posts: 385
Likes: 8
From: north branford ct
Its got to be the flywheel I just changed my 1990 dmf cause it sounded like a bunch of rocks in the bell housing. Got mine from zfdoc for $750. If you go with a solid one you will get the same noise
Drifting
Joined: Mar 2004
Posts: 1,443
Likes: 4
From: Grand Rapids Mi
Some of earlier [89] 6-speeds had this noise and had flywheel replaced under warranty. My car has had this problem that comes and goes for the approx dozen years I have owned car. 11,000 mile 89 Callaway appears to have had flywheel and transmission replaced under warranty. One friend had early 89 ZF-6 replaced at 1500 miles because of noise. Problem is not common in later low mile C-4's . Hope this helps
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