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Join Date: Feb 2003
Location: Leeds/UK
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Angry Knockng noise from rear

Can anyone help!!!

There seems to be a knocking noise from the rear of the car, at first i thought it might be the CV joint. However it still might be.

But when your driving it comes and goes, but when you dip the clutch it goes.

Has anyone had this problem.

Sometimes it gets really bad, and then disappears, its very intermitent . I have had it up on a ramp and moved the joint, which has stopped the noise but i know its going to come back.

Help

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Sanjit Aujla
Old 02-25-2003, 07:43 AM
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Sounds like you are due for CV replacement.

I would pull and replace them.

AFJuvat
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Old 02-25-2003, 09:00 AM
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Does your car seem to make the noise more on acceleration and deceleration.. or just when your cruising? I had a problem where there was a loud clank noise in my rearend when i acclerated and decelerated and it was because the rubber hub on my clutch was shot (here is the pic www.homebuiltjeep.com/clank.jpg). Let us know when it makes the sound and what it sounds like.
Old 02-25-2003, 10:47 AM
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I heard a noise and I swore it came from the right rear wheel. Couple of weeks and $350 dollars later I had new rear axels and CV jount's. The noise did not go away. It turned out to be the clutch. CV joint replacment was not a bad idea they were showing some wear, but I could have used the extra cash for the clutch job.
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81 924 N/A

Some people are like Slinkies. Not really good for anything, but you
still can't help but smile when you see one tumble down the stairs.
Old 02-25-2003, 05:31 PM
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yah that was my problem as well. i bought a new sachs clutch kit for 510 dollars. if you do it yourself be careful when taking the belhousing off not to break the sensors.. it was a 140 dollar mistake for me
Old 02-25-2003, 09:25 PM
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hmmm... im getting a regular clunking sound from the rear right in my auto 924 under braking. i can feel it thru the pedal. i pulled the drum off on that side and saw nothing peculiar
any suggestions?
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Old 02-25-2003, 10:08 PM
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just braking? what about accelerating hard?
Old 02-25-2003, 10:13 PM
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Sanjit try this....drive your car in second gear, slowly ease off the gas and then slowly reapply it. If your car jerks and stumbles and a noise is from the rear, the rubber hub on your clutch is shot. Mine just went out 3 weeks ago and it made the same noise. The noise from the rear of the car is because the hub that separated and the disc are spinning at different velocities and are striking eachother, causing the power in the rear end to decrease and increase intermittenly...in short, give you a real jerk in the seat of the pants
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Old 02-25-2003, 10:35 PM
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Quote:
Originally posted by Razor944
just braking? what about accelerating hard?
nope, just braking. doesnt matter if im turning either, just while braking
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Old 02-26-2003, 01:30 PM
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Does your 78 have 4 wheel disk brakes? I have heard that if the backing plates are missing it will cause a clunking sound. From the rear is strange though. The rear brakes do alot less braking than the fronts.
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Roger Hall

81 924 N/A

Some people are like Slinkies. Not really good for anything, but you
still can't help but smile when you see one tumble down the stairs.
Old 02-26-2003, 03:18 PM
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Quote:
Originally posted by Roger Hall
Does your 78 have 4 wheel disk brakes?
nope drums. im getting new drums and the shoes relined soon so i'll get a brake/ suspension specialist to check it when i get the shoes relined.
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Old 02-26-2003, 04:11 PM
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sorry I dont have any idea. Never had to fix that type of issue.

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Roger Hall

81 924 N/A

Some people are like Slinkies. Not really good for anything, but you
still can't help but smile when you see one tumble down the stairs.
Old 02-26-2003, 05:39 PM
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