C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Strange noises

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Old Oct 3, 2008 | 04:10 PM
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Default Strange noises

I have an 88' Automatic with a shift kit, when I engage Drive, the car stiffens up [because of load im guessing] but it makes a mechanical clinking noise. it also does this when accelerating and decelerating at low speed [like stop signs in my neighborhhod]. Any guesses?

My mechanic said it may be the front brake pads hitting the the carrier, but it sound like it's from the rear?
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Old Oct 3, 2008 | 04:30 PM
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Originally Posted by Alan777
I have an 88' Automatic with a shift kit, when I engage Drive, the car stiffens up [because of load im guessing] but it makes a mechanical clinking noise. it also does this when accelerating and decelerating at low speed [like stop signs in my neighborhhod]. Any guesses?

My mechanic said it may be the front brake pads hitting the the carrier, but it sound like it's from the rear?
Sounds like it could be your exhaust heat sheilds rattling maybe? But you said it happens when in los speeds and when you shift into drive, could this be a bad torque converter issue??
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Old Oct 3, 2008 | 05:49 PM
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Well when I shift into drive, the car grabs instantly, and makes a "clink" sound. When I'm driving [I have to be acce/decel, not staying constant speed] i get a slightly quieter noise, and it happens every few seconds. The car shifts very smooth when i don't get on it.
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Old Oct 4, 2008 | 12:18 AM
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Originally Posted by Alan777
Well when I shift into drive, the car grabs instantly, and makes a "clink" sound. When I'm driving [I have to be acce/decel, not staying constant speed] i get a slightly quieter noise, and it happens every few seconds. The car shifts very smooth when i don't get on it.
I would check all of your U-Joints for play. Hopefully its not play in your dif!!
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Old Oct 4, 2008 | 01:08 AM
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Also check the bolts for the C-beam.
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Old Oct 4, 2008 | 07:21 AM
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- Get someone who can help
- Get on a well or somewhere with this holes on the ground where you can go down and inspect yout car from under (how are this called ??????)
- Jack the car,4 wheels on the air
- Get in and test in on the air,while your friend watch from underneath where the noise comes from.-
- If your friend,knows how to drive and is experienced with C4s tell him to operate it
and you go inspect from underneath.-
You'll find where the noise is coming from instantly
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Old Oct 5, 2008 | 08:42 AM
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From: Greensburg PA
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My mechanic said the u-joints are in good shape, ill check the c-beam bolts.

if i can get the vette up on my friends lift Ill check. The noise is really annoying, and doesn't sound too healthy for the car
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