It seems only my high speed fan is coming on, this is causing the car to run at about the L in normal. it will get hotter then the fan will kick on and bring it down to AL. I never hear the low speed fan ever come on, it is hot outside around 100 this week It has never had an overheating problem before, what tests can I run to see if the low speed is working? it only has one fan I assume 2 speeds? I dont know If anyone can give me some info I would apreciate it, thanks.