Strange noise & engine stumble only w/AC on, anyone - Saab 900 Bulletin Board - Saabnet.com
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Strange noise & engine stumble only w/AC on, anyone
Posted by Brad Holm (more from Brad Holm) on Mon, 26 Aug 2002 18:35:29
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ever have these symptoms... I have a 1990 900 Turbo, only with the A/C on, my car will make a coughing type sound and the engine stumbles. It can happen when idling or under power. It does it at random. Almost sounds like it could be a big vaccum leak, but why would it only happen at random and only when the A/C is on? I have replaced all the grommets and some vacuum fittings. I thought it might have been a "hooter valve" acting up and replaced that a couple of weeks ago when I had a chance while doing some clutch mtc. with all the hoses off. Any ideas? Thanks!!!
posted by 64.12.96...
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