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    Gephill's Avatar
    Gephill Posts: 31, Reputation: 1
    Junior Member
    		  
    #1

    Jul 23, 2010, 06:24 AM
    Cooling fan keeps running
    I have a 1996 Buick park avenue. The cooling fan contines to run even with the motor off. It runs until the battey is dead. What could be the problem? Thanks for any help.
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
    Uber Member
    		  
    #2

    Jul 23, 2010, 06:34 AM

    Test or replace the Engine Coolant Temperature SWITCH. Also, test or replace the Radiator (Cooling) Fan Motor Relay.
    CaptainRich's Avatar
    CaptainRich Posts: 4,492, Reputation: 537
    Cars & Trucks Expert
    		  
    #3

    Jul 23, 2010, 08:02 AM

    Make certain that you're checking the correct switch: three wires are Yel, Lt Grn and Blk. It is mounted below the thermostat housing.
    Be careful checking these circuits as the Powertrain Control Module (PCM) controls relay grounding.

    If the switch and relays and harness are OK, your problem could be the PCM. Let me know.
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