my 2000 mustang gt the electric fan runs all the time the engine run any idea maybe the relay if so where is it

 

Accordingn to the Haynes manual the fan can run all the time if the coolant temp.sensor or the Constant Control Relay Module (CCRM).I'd guess the coolant temp.sensor.

 

where is the ccrm at i dont see any relay or box in the fuse box under the hood or in the car

 

I have the same problem on my 96 GT. I changed out the engine coolant temp sensor ( located on the first intake manifold crossover, next to the stat.) Then I replaced the CCRM( located inside the passenger side fender well, you have to take out the plastic fender well thing to get to it, its a little black box) and that didnt fix it eighter. So I swapped out my PCM(Powertrain Control Module) Sometimes called ECU with my brothers 96 GT PCM and it fixed the problem. I havent purchased a new PCM yet but when I did the swap it fixed the problem and then I put mine back in just to drive it around for awhile. I would do the sensor first since its like 5 bucks then the CCRM and then if nessasery do try a new PCM. That will fix you up and get you running as good as new.

 

hey guys thank for your help i took the fender wheel cover off and started tapping the relay with a hammer and now it works it even comes on and turns off whilke sitting so ill change it out so it doesnt do it again and thanks for your help