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metallic sound? Posted by bobc [Email] ![]() ![]() ![]() In Reply to: Re: ACC Noise, B. Millar, Wed, 1 Nov 2006 19:10:02 Members do not see ads below this line. - Help Keep This Site Online - Signup |
it is certain that it is related to the compressor being on, it could be the expansion valve, but not for sure.
reading your description it seems that the sound is metallic, rattling that is always present wehen the compressor is on. To me that indicates a rattling compressor (pistons inside the compressor) or clutch.
my understanding of the "expansion valve noise" that seems to be common on our saabs is that it more like a fart ... its momentary, and "hooty" or "whooshy" rather than metallic.
I had a rattling compressor on my last C900T that sounded like hell. It rattled for years and worked just fine (as a matter of fact, it out-lasted the car!). Also had one in a caravan that rattled for 2 weeks and then seized.
is your sound metalic? is it always present when the compressor is on?
_______________________________________ '08 9⁵ 2.3T SportCombi, Polar White '01 9⁵ Aero Midnight Blue (benched) '00 9⁵ Aero Midnight Blue (rescued) '99 9⁵ Base model, Cosmic blue '00 9⁵ Aero Silver (RIP - transmission )
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