Coolant Fan 1990 Olds 88 Royale

1990 OLDSMOBILE
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GRANDPRIXGUY
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When the motor gets Hot the coolant fan is suppose to kick on to cool down the radiator correct?

Now my Fan does not come on at all. I have replaced the fuses and the relays and check the wiring also replaced upper and lower radiator hoses and radiator that were bad.Plus replaced thermostat. I also replace the fan itself. Now i thought i fixed the problem but nope fan still won't turn on to cool the radator.

But the Fan does kick on when i put on the A/C

Help me out here why does this Fan not come on when it gets HOT?

I am Confused here!!!!
Sep 29, 2007 at 7:47 PM
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MERLIN2021
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Sorry to give you the bad news, but if you've changed all that the only 2 parts left are the electronic coolant temp sensor(ECT) and the computer(PCM)! Go with the ECT first...it's MUCH cheaper than PCM!
Sep 29, 2007 at 8:19 PM
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BIGDOGGTIM
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I am having the same problem with a 1994 Saturn 1.9L 16V SC2.....I want to know how to run some new wires so the fan will come on. Like to the positive on the battery or something.
Sep 29, 2007 at 8:27 PM
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