Clunking over bumps in engine bay?

Dr. Flyview · 07-20-2007, 12:30 AM

Hey,

Over some harder bumps, if I'm listening carefully without any music you can hear something clunking or shaking after the bump in the front or underneath the car...

Don't know if this is connected, but when the car is idling in neutral I hear kind a sound which some have said could be a loose belt?? Something kind of clunking like a truck-like noise. Strange enough if I push the clutch in, it goes away! And after I release the clutch pedal the sound stays away for a while.

Any suggestions?

tig · 07-20-2007, 02:02 AM

you should have a cover on your cat under the car it might be loose, i know i had that problem got the car up on the hoist saw that the cover on my cat converter was loose, especially if your car is lowered which was the case on mine it rubbed up against bumps n stuff on the road and eventually got loose.

carjoe · 07-20-2007, 09:09 AM

That second sound could be a throw out bearing for the clutch. When you release the pedal, the sound goes away? Classic symptom. Depending on the car, it can go away when the vehicle has warmed up.

Dr. Flyview · 07-20-2007, 09:10 AM

Quote:

Originally Posted by carjoe

That second sound could be a throw out bearing for the clutch. When you release the pedal, the sound goes away? Classic symptom. Depending on the car, it can go away when the vehicle has warmed up.

No...strangely the sound goes away when I press the pedal.

Lower_Level · 07-20-2007, 09:22 AM

Quote:

Originally Posted by Flav_cool

No...strangely the sound goes away when I press the pedal.

My car occasionally makes the same sound. Asked my mechanic about it & what he told me was it's the gears in the tranny. When they're not under load they will rattle a little bit. It's common on cars with higher mileage. Not much you can do about it.

Dr. Flyview · 07-20-2007, 09:35 AM

Hmm interesting...

Remember though I have two problems and not sure if they're one and the same.

Lower_Level · 07-20-2007, 07:32 PM

well as mentioned, the clunking while you're driving could be the heat sheild on the cat (mine's loose too); could also me one of the brake dust shields loose or broken; or could also be the front strut mounts.

But if you're not moving & getting a rattling/clunking noise while you're engaging or disengaging the clutch; then that sound would likely be a clutch/transmission issue.

Dr. Flyview · 07-20-2007, 08:42 PM

Quote:

Originally Posted by Lower_Level

well as mentioned, the clunking while you're driving could be the heat sheild on the cat (mine's loose too); could also me one of the brake dust shields loose or broken; or could also be the front strut mounts.

But if you're not moving & getting a rattling/clunking noise while you're engaging or disengaging the clutch; then that sound would likely be a clutch/transmission issue.

Hehe, I don't have a cat shield lol... it came off a while ago. I dunno it's not very prominent at all and only over pretty big bumps. The other idling noise is a little stranger.

Docherty · 07-31-2007, 01:59 PM

Try checking your tranny oil or changing it. Does your car have a dual mass flywheel? I believe if it does it is supposed to act as a dampener. Could be the problem could be wrong though.