Car Questions
RepairPal is your advocate for car care advice and guidance

Rattle in bell housing at idle

(1990 Pontiac Bonneville)
in Eagle Point, OR on August 01, 2018
Just started, goes away at higher rpms, starting sounds a bit different. I suspect a cracked flex plate
How long have you had this problem? 1 day
Tags: pontiac, bonneville
Displaying 1 answer & 0 comments
Popular Answer
on August 01, 2018
Normally a “cracked” flex plate (flywheel) will produce more of a squeaking sound than a rattling noise - however that is quite possible.

Loose torque converter to flex plate bolts is another possibility.

In any event *hands-on* inspection will be required .. “Flexing” the flywheel using a prying tool will usually reveal cracking - trainer ear will recognize it straight away - as well as loose bolts to torque converter.

Good luck!
Sign in to reply
Get a repair estimate
RepairPal estimates are guaranteed at over 2,000 quality certified locations nationwide.
Or interested in getting a repair? Find a Shop

Similar Questions

View answers to similar questions from RepairPal's community of auto experts and enthusiasts.
Vibration and sputtering started out of the blue, have had car for one year with no other issues, a perfect ride........
A knocking sound as if something is loose inside the engine but doesn't seem to effect the way it runs
Didn't find what you were looking for?