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nhallman's Avatar
 
Join Date: Jan 2002
Location: Columbia, SC
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Strange Noises

Lately I've been hearing a weird noise (location unknown, somewhere from the rear of the car) as I start off in first gear.

I'm sitting at a light, the car is already in first gear w/ clutch pedal depressed. Light turns green, and just as the clutch starts to engage and the car starts to roll, I hear a pretty loud scraping/crunching/(grinding?) noise that lasts about half a second, then goes away as I pull away...

It doesn't happen all the time, but seems to come more often if I'm sitting on an incline, so that the car rolls back slightly between the time my foot comes off the brake and the clutch engages.

The best thing I can think of to describe the noise: imagine a big fat guy blowing his nose really loudly...

So where should I be looking? Clutch? tranny? CV joints? I'm not sure I like the sound of this.

--Nick
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Old 04-21-2003, 06:48 AM
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Clutch or CVs. Check all four CVs to see if the bolts are still secure and the joints are secure.

After that, I would suspect the clutch.

--DD
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Old 04-21-2003, 07:36 AM
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This falls under being part of the clutch, but it could be the throwout bearing.
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Old 04-21-2003, 08:21 AM
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You could try having someone push the car or pull it with a strap in neutral with the engine off to see if there are any noises from the cv/axle joints. You can also put the car on stands and try letting it run in gear from a stop condition and have someone listen for noises. Generally if it is a clutch or throw out bearing problem you can feel the vibration in your foot from the clutch cable vibrating? While up in the air I'd look at the tranny fluid level and try draining out a small amount to see if there are metal particles or discoloration of the fluid. Good luck.
Old 04-21-2003, 12:29 PM
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I second looking at the tranny fluid. If you see a "gold" sheen in the fluid, you have lost a bearing. A silver sheen is not too unusual. Lots of silver fuzz on the magnetic drain plug is also not unusual.

Check the easier stuff first: CV's, etc.

James
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Old 04-21-2003, 12:58 PM
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