87944sneedshelp

I have a 1987 944s with LSD factory transmission. It has 47250 original miles. I have a "clunking noise" that seems to follow the wheels and is most noticeable at low speeds. The noise goes away when the clutch is pressed. When the car is in gear I can minimize the noise by accelerating lightly. The noise appears to minimize and "go away" at high speeds. The mechanic put it on a lift and it did not make any noises. It shifts perfect and runs perfect. I had him change the transmission and diff fluid and he used 75w90 synthetic GL-4. The car drove fine for 10 miles then made the noise again. NO METAL in the case when drained.

He check the CVs and Exhaust and said all is OK.

Thoughts?

Thanks for your time and opinions.

william_b_noble

could be sign of impending clutch failure - do you have the rubber centered clutch?

PerceptionProblem

+1 to clutch disk. At almost 30 years old, all rubber is suspect.

flashx

I had something like that in my 87 turbo. I changed the right rear axle and thought it fixed the problem, but started hear it again. So I checked the axles again and they didn't have much play but when you took the left axle and pushed it towards the wheel it would make the knocking noise. The outer CV joint had come apart. I changed out the axle and now qiet and less vibration in the car

Carlsbergas

Damn.. looks like im in for new cv joint repair kit, started to hear noises from rear left wheel might be outer cv joint under load on low rpms.. few months ago I had to change the inner cv joint because someone who replaced it before me didnt tighten it up and it got lose wich broke it, I was lucky I didnt lose any bolts, they were all the way out

87944sneedshelp

Thanks! I just ordered 2 GKN axles (New). I hope this does it. My mechanic is only charging 1 hour labor each to install.

87944sneedshelp

Just a follow-up, Noise is gone. CV axles fixed the issue. Thanks for all of your help!