My 1994 Lumina with 3.1 has a metallic rattling noise under the hood. Any ideas on what this could be? I have replaced the auto tensioner and the water pump already. Thanks!
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20 years ago
1994 Lumina Noises
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20 years ago
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20 years ago
If the noise stays with the belt off, it's probably piston slap.
My '90 3.1 has done this for the 9 years and 200k miles I've driven it.
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20 years ago
Had a rattling noise on a '92 Olds Cutlass with the 3.4 DOHC engine. W body like your Lumina, I believe. Belt tensioner did me no good either. Replaced the a/c compressor and that did it. It was the clutch bearing. You can replace the clutch bearing by itself, but my compressor was shot. Hope this helps.
Garrett Fulton