blackbird94
Registered User
I was helping a friend with his 90sc today and noticed a problem with the idle when the ac is turned on. The idle drops well below 500rpm and the engine usually dies. Sometimes it will recover and idle just under 1000rpm with the ac running. More often than not you will have to feather the gas until it recovers and then it idles normally. It also does the same thing if your driving around with the ac on and come to a stop. It will do it sometimes even with the ac off if you let off the gas very quickly,but it will recover without stalling and idle steady around 800rpm. It's a 5spd with a brand new IAC. The IAC is the ford oem. Any Ideas?