1989 Pontiac 6000 Cooling Fan Won't Come On!!

1989 PONTIAC 6000
118,089 MILES • 4 CYL • FWD • AUTOMATIC
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LIGHTNING533
  • MEMBER
  • 1 POST
I've tried everything i could think of! i tested the fan itself, it ran (so it's not the motor or the fan itself). It has plenty of coolant. I swapped some of the relays, still nothing (not a relay problem). I changed the temp. sensor and switch, still nothing. I even checked all the wires going to it. They all checked out ok. I run the car idle to see if the fan kicks on, but it gets to the point steam begins to come out, and the the upper radiator hose willl take your skin off if you touch it. Any suggestions for this, i'm trying to advoid a taking it to a garage.
Sep 5, 2010 at 9:26 AM
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MERLIN2021
  • ASE Certified Mechanic
  • 17,250 POSTS
  • ASE Certified Mechanic
If the relay, sensor and fan are OK, you will need to check the wiring between the ECM and the relay, if thats OK the ECM is no good, I will send testing info via email.
Sep 5, 2010 at 9:33 AM
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