problem with idle when fan or air con comes on?
I have an Alfa Spider (V reg) and have been having trouble with what started off feeling like a misfire or chocking. I had the MAF replaced and that didn't fix it, so I had a vacuum hose replaced too and this has fixed that issue.
Since then, I have noticed the idle "searches" when the engine fan turns on or if I switch the air con on! The revs go from about 400 rpm up to about 1700 rpm when it is in this state. When the engine fan turns off again, the revs return to a pretty constant idle rate of 1000rpm...
If anyone knows the fix, please let me know as I am getting to the stage of having to consider selling the car as I can't keep throwing money at it and getting no solution!!
Many thanks peeps