My 1991 940SE wagon is having a problem with idle. Basically it idles fine in Park but has an occasional "miss". As soon as you put the car in drive or reverse or turn on the a/c it kills the motor. Starts up no problem after it stalls. We have cleaned the IACV, replaced the TPS, the ECU was recently changed with a rebuilt one, ignition module has been replaced, coil tested good, checked all vacuum lines, alternator recently replaced, rpm sensor is new, ECT is new, cap, rotor, wires, plugs are new. Fuel pressure tested good, fuel pump relay is new, injectors tested good. Ground wires cleaned, AMM is working but it is dirty, radio suppression and cooling fan relay checked good. I don't know what to do at this point. I'm hoping someone has seen a similar problem and can offer some advise on this. Any suggestions are appreciated before the car receives the same destiny as the printer did in the movie Office Space!