...fix it This can be due to a high speed fan relay failing to work due to a dead thermal switch. When you turn on the A/C, it overrides the thermal controls and triggers the high speed fan relay. ...
Question about Pontiac Cars & Trucks
...relay control circuit. • P0481 is for the high speed cooling fan relay control circuit. You want to fix your own vehicle ? Suggest you learn how ...
Question about Cars & Trucks
...cooling system , Three relay's controlled by the ECM -engine control module turn the fans on in two different speeds ! There could be DTC'S diagnostic trouble codes stored in the ECM, HVAC module , ...
Question about Cars & Trucks
...Cooling Fan Diagnostics - YouTube if the scan tool ECT sensors show 180f to 200f it is not overheating what are you talking about. blower dash fan. engine RAD fans < guess only this. or front AC ...
Question about Pontiac Grand Prix
...Cooling Fan Relay 2 Control Circuit High Voltage Diagnostic Fault Information is the ECT showing overheat, yes no? if yes, it must operate a fan or 2. the book even covers all tests for fans dead, in ...
Question about Cars & Trucks
...high fan works good. Is this something I can fix myself and if so, how? If it is a Ford product the problem is with the ignition switch!!!!!!!!High cool function bypasses switch, Other speeds do ...
Question about Cars & Trucks
...fix will be elusive without more data. The one direction I can point you in is to see if the car runs hot at highway speed. If it is fine then check to see if the electric cooling fans are operating ...
...cooling as they pull air through the radiator when the vehicle is not moving fast enough to cool the coolant. The problem probably lies in a relay, so replace the high speed fan relay with one you ...
...fix cooling fans that run when car is off fans run when car is off. Had to disconnect battery to stop them from running Replace the fan relays. The Radiator Cooling Fan Motor Relay is located: Under ...
...it kicks on to high speed to cool quicker. in your case the low speed is non existent and the computer is simply waiting for the temp to raise to the point where it triggers the high speed
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