Question about Pontiac Grand Am

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Where is the fuse or relay for the cooling fan in

Where's the fuse or relay for cooling fan in '87 Grand Am... Cooling fan is not working...

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  • born_to_bowh Jul 26, 2009

    4 relays, any idea which is for the cooling fan. They aren't labeled.

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You have to refer to your owners manual or an after market service manual for fuse locations but that is not the issue. There is a sending unit screwed into the block with a temp sensor that closes the circuit on the ground side when the cooling system reaches a specified temperature. There is a fuse between the hot side and the fan for over current protection (see manual). A bad sending unit is most likely the culprit. Measure the resistance or continuity when the engine is hot from the sending unit body which is grounded to the block, and the output terminal or black wire running to the fan motor. It should be closed or read less than 0.5 Ohms. If it is open or very high resistance replace it. Good luck to you. I hope thishelps

Posted on Jul 26, 2009

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Cooling fan relay is located in the junction box in the engine compartment.

Posted on Jul 26, 2009

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