Shervin350

Help guys I'm having problem with the car behind red light when the fan comes on the rmp drops to around 1k and it goes up and not not my by very little, anyone else in a is350 experiencing this, could it be the battery or the alternator going out?

Shervin350

ops i ment to put 500rpm

flattire

Its prob just your fan cooling down everything, if you have you A/C on this may also cause the problem. Its normal for all cars. Even with mine (is250 and living in hot FL) it happens to me.