Question about 2001 Chevrolet Malibu

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Cooling fans on 2001 chevy malibu will not come on unless ac on

The cooling fans will not come on unless ac is on or wire to coolant temp sensor is unplugged, motor will get hot enough to boil out coolant. Replaced themosat, engine coolant temop sensor and all 3 fan ralys, all fuses good

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The relays control circuit is grounded by ECM (computer) . to check this make sure the is hot enough for the fans to be commanded on by computer and check to see if you have voltage at relay and it has ground from computer . you may need ECM.
good luck

Posted on Jan 28, 2009

  • mnabi01
    mnabi01 Jan 28, 2009

    i meant on the first line make sure the ENGINE is hot enogh.

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