does anybody have any idea whatwould make 1 fan not spin. both of my fans work taken out of the car but when in the car the fan on the driver side does not work.pretty sure it is electrical problem anyone have any ideas? 97 rs runs hot like 234. thanks for your replies

 

wheres the ground go for the one that dont work? is it the same as the other one? also check if your getting power to the one that dont work.

 

i am not getting power to it. thanks

 

the ground cable should be with all the fan harness that attaches to the fans, you said you have a 3800, there is two fans right, and you only see one fan turn on, you have tested the wires and you have power to only one conection and not to the other one? if so check you fans relays, there is a three fan relays that work the fans.

 

the dealer told me that only 2 of the 3 fan relays are used. when i put in a new relay in #1 the fan came on instantly. then my engine light still comes back on. my car in traffic gets to like 234 degrees and now its getting warmer out it will get hot a lot faster. my thermostat works fine.is it worth $120 to take it to a dealer to find out whats wrong with it? my obd gives 2 codes both are 1651 one has a p and the other like a b or backwards p. thank you so much for your replies.

 

so all your relays are ok? the dealer told you that only #1 is bad, and 2 and 3 are good? have you try checking out ur coolant sensor on your car it should be below the throttle body, it could be that is bad and not sending the signal for the pcm to turn the fan on?

 

no i didnt take it there yet. they told me that i dont need a relay in all 3 spots just in 2. dont know if thats true or not do you? i only have 2 relays in there the other fan relay is empty? should i put a relay in the third spot? thanks for your replies

 

well it looks like you are missing a relay then, according to Hayness book,a 97 and earlier vehicles should have 3 relays check out the picture that i upload. 2.cooling fan relay #1, 3.cooling fan relay #2, 4.cooling fan relay #3, number 1 relay on the picture is for Air conditioning compressor.

 

there is nothing at all hooked up to fan 1 relay it is just an empty slot. fan relay 2 works and fan relay 3 there is something wrong with the power to it the wire that supplies the power to it is neutral has no power. thanks for your replies

 

i did replace the coolant sensor and still have the problem. thank you for your replies