> OK, so I started up my car today, without the AC on, and it did the 2500rpm
> rev thing!
>
> It started fine, idled for a few seconds, then revved to 2500, held for
> about 4 seconds, then dropped back to 1000.
>
> So, if it's doing this with or without the AC on, where should I look for
> the problem?
>
> Thanks,
> John

> My 93 GT (manual) is doing some weird stuff only with the AC on.
>
> Firstly:  When I start it up in the morning, it starts fine, and idles fine
> for a few seconds, then revs up to about 2500 rpm, holds there for 3 or 4
> seconds, then drops back to 1000.
>
> Secondly:  Under acceleration, it is impossible to get a precise throttle
> response.  If I try to accelerate slowly and smoothly thru first gear, it
> will go smooth up to about 2500, after which it acts as if I have suddenly
> stomped on the pedal.  Then when I completely let off the pedal, it takes it
> a second or two before it stops accelerating.  It acts as if I still have my
> foot on the pedal.
>
> Third and finally:  At cruising speed (70-75mph) it does not want to just
> maintain a speed.  It wants to be either speeding up or slowing down.  If I
> set the cruise control, it will oscillate between "gas on" and "gas off".
>
> Note that none of these conditions exist when the AC is off!
>
> Any ideas?  Thanks,
> John