Date: Fri, 31 May 2002 13:16:34 GMT
From: (Andrew Stephenson)
Subject: Re: 94 900s - Runs rough with A/C on ?

In article <LDEJ8.8789$> "Mike" writes: > New style 1994 900s 2.3 L engine > > Runs fine most of the time, but now that the warmer summer > temperatures are here, it runs rough and loses power, when the > A/C is on (at low speeds mainly). > > To fix, I just shut the A/C off and it smoothes out and the > power returns to normal. > > [...] Wild guess:- Cars with A/C tend to boost engine idle speed when A/C is on. (After all, the power needed by the A/C has to come from somewhere.) If your car's idle boost is not working right, the load of the A/C slows the already slow-running engine -- in your case towards a stall, by the sounds of it. Naturally, when you tread on the accelerator, you automatically select a setting that provides enough fuel to make up for the bad adjustment. -- Andrew Stephenson

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