1994 100S wagon - Fan won't shut off.

[Use Less]

Fan won't shut off. Had to pull out relay under the hood to stop it. Never happened in the 6 years I've had this car. Drove home 10 miles on wet roads. Wet wires, short, bad relay??? Any help appreciated. Rob

[upallnight]

Looks as though the relay for the fans are still energized if you had to pull one to shut the fan off. The relay could be bad and the contacts are sticking, or you have a short that is still supplying power to the relay when you turn the engine off.

Your car have a fan controller/resistor

V7 are the two fans
J26 and J135 are the relays
J135 relay is for high speed as you can see that it bypass the fan controller/resistor. If the low speed fan is running I would check relay J26. check the relay and the circuit that supplies current to energize the relay.

[Use Less]

Originally Posted by upallnight

Looks as though the relay for the fans are still energized if you had to pull one to shut the fan off. The relay could be bad and the contacts are sticking, or you have a short that is still supplying power to the relay when you turn the engine off.

Your car have a fan controller/resistor

V7 are the two fans
J26 and J135 are the relays
J135 relay is for high speed as you can see that it bypass the fan controller/resistor. If the low speed fan is running I would check relay J26. check the relay and the circuit that supplies current to energize the relay.

Thanks for the prompt reply.
This morning I started the car with the relay #217 unplugged. I turned the car off and plugged in the relay. The fan started right away. I unplugged the relay and smacked it on my hand and plugged it back in. The fan stopped. I turned the car on and the fans started and then stopped when I turned the car off. It seems to be working. I'm not sure if the problem is solved, but sure hope it is.
Will post again if problem reoccurs. Thanks again for your help.
Rob
Will post again if problem reoccurs.

[upallnight]

Originally Posted by Use Less

Thanks for the prompt reply.
This morning I started the car with the relay #217 unplugged. I turned the car off and plugged in the relay. The fan started right away. I unplugged the relay and smacked it on my hand and plugged it back in. The fan stopped. I turned the car on and the fans started and then stopped when I turned the car off. It seems to be working. I'm not sure if the problem is solved, but sure hope it is.
Will post again if problem reoccurs. Thanks again for your help.
Rob
Will post again if problem reoccurs.

Sounds like you need a new relay. The contacts on the relay could be sticking and that is why when you smacked the relay, the contact open.