I am having a problem whenever I turn my A/C on. I get a white smoke that comes from the engine bay. It only happens when the A/C is on. It also blows back into he cabin through the vents. I looked at a couple other threads and thought it might be my heater core but I have no water on the floor board. Any help would be great. I checked my coolant and that is topped off just fine. Any help would be great. Thanks Phil

 

What does it smell like? If it has a sweet smell, It may be an leak in the cooling system. But you said it only happens with the AC. start her up and turn on the AC. Make sure that it is kicking on. A lady friend of mine has a Subaru that did the same thing. On her car it was the compressor belt slipping and burning because the compressor was sticking every time she turned it on.

 

The smoke smells bad not sweet at all. I will have to look At the belts for any unusually wear on it good idea

 

My does the same thing but it has no smell. I really want to know what it is.

 

Found problem. Electric fan is not running when AC is turned on