Quote Originally Posted by Jason witney Funny how you say that Mines doing that now I sent ECU to be checked... Please help if you can Jason Hi Jason my problem was with the ignition control module. After being very carefully removed the top housing (on the module it self)with a sharp knife I found 4 wires bedded in jelly. Any abnormality can be a problem mine was a tiny little metal flake touching
Dont mean to resurrect a two year old thread but for posterity - the underlying causes of this is one TWO things -Auxilliary electric fan is dead or dying. Run direct power to lower radiator hose thermoswitch to verify. Fan should come on under direct power. If not the fan circuit has a short and the car is actually overheating the engine ECU will cut the AC off to compensate(priority is to COOL engine
you say you have only done 2 miles on new plugs have you concidered putting old set back in and seeing what the engines is responding like . i had a misfire on number 3 on my a3 t the ignition module had gone down on only one but the new bosch plugs i had put in were not suitable even know they were reconmended they ran very weak so put back in ngk r6 plugs runs atreat.