At what temperture should the electric fan start

Nov 02, 2009

- yes it should have. this system is controlled by the computer via relays. the computer get a signal from the temp sensor and calculates temp and when it reaches the set temp it will turn low speed fan on then if the temps keeps going then it will turn the high speed fan on. if you are looking at the gauge on the dash it should be under 21o at all times if it rises then the cooling fans are not working. you can find the fuses and relays for them in the underhood junction box.

Nov 02, 2009

- a scanner can activate the fan thru the computer. This will confirm the computer is ok. You will need to see what the computer is seeing. If you have a bad temp sensor this misinformation could cause your condition. Can you jump the fan manually to verify it works. Can you turn the AC on and the fan come on. If you can turn the fan on somehow this will verify that a bad fan is not the issue.