Moan at idle... again - Saab NG900 & OG9-3 Bulletin Board - Saabnet.com
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Moan at idle... again
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Posted by John J [Email] (more from John J) on Sun, 25 Feb 2001 08:13:24 Share Post by Email
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I used to have a weird low whistling sound that some Saabnetters had said was a bad A/C clutch (posted in Jan/Feb. 2001). I took my SAAB to the dealership for it's 55K service and they said it would be tough to track down if the problem was intermittent (which it was). The dealership rechargerd the A/C system, citing that it was low. A/C function was good. Since they could not positively identify the problem, they performed the A/C service for free.

Here's the problem - occasionally, my car will now emit a very loud moan when it idles. It sounds like something is resonating quite badly, and lasts for about 3-5 seconds each time it happens. I suspect that the expansion valve needs to be replaced, since this cured a similar problem I had a few years back. This time, the low moan happens about 30% of the time (when sitting idling), but it's louder than before.

Saabnetters, any thoughts?

Regards - JMJ
'97 900SE coupe, 55.5K


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