94 9000 Aero - Noisy when cold, quiet when warm ?? - Saab 9000 Bulletin Board - Saabnet.com
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94 9000 Aero - Noisy when cold, quiet when warm ??
Posted by Diamond Dave [Email] (more from Diamond Dave) on Mon, 7 Feb 2011 12:07:17
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1994 9000 Aero 5MT, ~260K, owned since 145K.
So, I'm still tracking an issue and trying to learn the differences between balance chain related noises and water pump noises.
I've got a very noisy rattling at cold startup but it noticeably dissipates after the engine is warm; not completely though.
2 questions for the professionals:
1) Assuming a worn Balance Chain, does the noise diminish or go away once the engine is warm or is the sound always the same decibel level regardless of whether the engine is warm or cold?
2)Assuming a worn water pump (of which my pump has no less than 90K miles on it), same question, is it noisier on cold startup and quieter once the engine is at operating temp?
posted by 207.170.20...
Posts in this Thread:
- 94 9000 Aero - Noisy when cold, quiet when warm ??, Diamond Dave, Mon, 7 Feb 2011 12:07:17 <-- Viewing This Message
- Re: 94 9000 Aero - Noisy when cold, quiet when warm ??, JEMSaab , Mon, 7 Feb 2011 21:50:59
- good guess.., derf, Mon, 7 Feb 2011 16:56:53
- Re: 94 9000 Aero - Noisy when cold, quiet when warm ??, DanaH, Mon, 7 Feb 2011 14:24:38
- Some other considerations, David Ingram, Mon, 7 Feb 2011 13:12:52
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