Date: 8 Mar 1998 06:06:37 -0500 From: kenbellnopsamx.com (Ken Bell) Subject: Re: Trouble with the AC
>Erik Frösslund wrote: > >> I have a Saab 9000cd 2.3l turbo, and my AC dosn't work properly. >> Sometimes hot air starts to come from the AC, and it dosn't matter if i put >> it on low, still hot air comming through. >> Then I have to calibrate the AC, and the mechanics can't fine anything >> wrong. On our '88 9000T, I found that one of the pins on the A/C compressor relay (got to remove the glove compartment fuse shelf, and it's behind there) was burnt. This was pin #31 I think; it carries current to the clutch. My guess was that this prevented the clutch from engaging, so of course, no A/C. I write "guess", because although I bought the new relay, I still haven't had the time to replace it; I want to clean the socket carefully before popping the new relay in. In any case, besides leaving me wonder why the A/C was so crappy, it turned out that this was the cause of an occasional surge in engine idle speed, that turned into a continuously high idle (around 1250 rpm) when the A/C completely stopped cooling, due to the electronics sensing that the compressor was being run, and raising the engine idle speed to compensate. -- Ken Bell :: kenbellnopsamx.com :: (212) 475-4976 (voice)
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