94 Q45a power problem

[HawgHunter74]

I've got a 94 Q that runs great without the ac on, but once you turn the ac on itruns rough dropping the idle down to between 400 and 500. Any idea's what might be causing this?

On a different note...has anyone ever heard of a MAG sensor on this car or was that the guys broken english?

[maxnix]

Originally Posted by HawgHunter74

I've got a 94 Q that runs great without the ac on, but once you turn the ac on itruns rough dropping the idle down to between 400 and 500. Any idea's what might be causing this?

On a different note...has anyone ever heard of a MAG sensor on this car or was that the guys broken english?

Dirty IAC valve, and probably TB, EGR, Plenum and lower runners.

There is a crank angle sensor.

Got FSM? TSB?

[morton27]

MAG sensor? You probably mean MAF sensor which is your Mass Air flow sensor - clean it with Brakleen