Clunking noise from the rear when coasting...

[thequietracer]

When I coast at low speed or slightly higher gear I hear clunking noise , jerky from rear underneath the car, what is it? Although, when clutch is depressed the noise appeared to be gone.

My mechanic says, it is normal as all 2002 makes this type of noise. Honestly, it is quite annoying.

[c.d.iesel]

damm hard to tell from here without a UTUBE segment ?

CV joints binding up?

stub axle bearings failing?

stub axle nuts working loose? - bearings failing? - wheel

coming loose?

drive shaft u-joints binding up?

center drive shaft bearing and rubber mount failing?

front drive shaft Guibo failing?

any oil in the rear diff ?

any oil in the gearbox?

does the noise change in pitch or volume as you turn left or right?

Hot? cold? noise all the time? or only after driving 1/2 hour or more?

[thequietracer]

Noise appears whether the car is turning or not trurning, though I hear more when the car is going straight. Again less noise or none when clutch is depressed.

[KFunk]

check out the big cylinder shaped rubber mounts on each side of the rear subframe and see if the rubber is all rotted out and wiggly. they're just in front of each rear wheel, and have a little diagonal brace attached to them. the test to see if those are bad is usually to engine brake and see if the car jerks side to side in any way. it should go straight if those mounts are fine.

Also, take a look at the two rubber mounts above the differential. they're also hollow rubber mounts that could be distorted and/or broken.

and of course, check the fluid in the differential and make sure you're not hearing gear clashes from them being dry....

[thequietracer]

Both rubber mounts have been replaced. Differential fluid low? how do you check it? Could it be wheel bearing? The noise seems to come from the center rear of the car... i think.

[quinnfiske]

My guess would be CV joint. See if any of the boots has cracked and the grease ran out.

[BillWilliams]

Check the four bolts/nuts that hold the differential in place. Also check the bolts/nuts that hold the half shafts to the differential flange.

Tell your mechanic he can take a ride in any of our 2002s and he will not hear that noise, it is NOT normal.

[thequietracer]

I knew that jolt sounding is not normal. I hope those things you said will fix problem. Can you think of anything else if those things aren't it?

I'll have it check next week.

Thank you very much.

[BillWilliams]

and see what you see, feel what you can feel.

[Scott Sislane]

When I coast at low speed or slightly higher gear I hear clunking noise , jerky from rear underneath the car, what is it? Although, when clutch is depressed the noise appeared to be gone.

My mechanic says, it is normal as all 2002 makes this type of noise. Honestly, it is quite annoying.

You may consider finding a new mechanic, one who actually knows something about the car. If he told you that was normal for the car, and is doing work on your car, I'd be skeptical of his work done. He obviously knows very little about this model, or just has no interest.

If you mention your location, I'm sure someone can point you to a reputable shop, unless you are able to do the repairs your self. I didn't see you volunteer that info. (??)

Scott

[TobyB]

To add to other good posts-

center driveshaft nut loose.

To reiterate- stub axles/ hubs, loose driveshaft bolts,

dead diff mounts (behind diff)

you exhaust hitting something (no, really!)

or a dying CV or u joint.

hth,

t

[BillyTheKid]

you didn't leave your wife or kid in the trunk did you???? :-)

[thequietracer]

It would be thunk instead of clunk.

[Scott Sislane]

It would be thunk instead of clunk.

what did you discover?

[thequietracer]

Nothing yet. Tomorrow i hope.