Question about 1998 Chevrolet Monte Carlo

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Fans are not working when A/C turns on. what could the problem be?

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Your problem is more than likely that your cooling fan motor is bad i had the same problem on a chevrolet cavalier when i turned on my ac the fan would not come on also after checking i found out that my fan motor was bad after changing it worked fine hope this helps.

Posted on Oct 20, 2013

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Posted on Jan 02, 2017

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1 Answer

How Can I get my 2003 pontiac grand Prix cooling fans to work ?


check cooling fans fuse and relay.bad engine coolant temperature sensor will cause coolant fans not to turn on.if AC system not working with no refrigerant in the system cooling fans wont turn on when you turn on the AC.problem in PCM will cause fans not to turn on.

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How to check if cooling fan is working properly


Start the engine with hood up. Wait for it to reach operating temperature. When it does, fan should cycle on for a few seconds, then off. If it doesn't come on, turn car off and make sure fan is free spinning-no obstructions. Be careful, if engine is warm, fan can come on and start running. If fan is free wheeling, jumper it from battery to fan connector to check fan motor. If motor works when given battery voltage but still won't come on as it should (usually the engine has to be quite warm to turn on the fan-as in stop and go traffic, or long idle times), you will have to check wiring at the fan relay, check if temperature switch to turn fan on is working properly, check if computer is signaling fan to turn on at the relay. You will probably need a wiring diagram if you don't find the problem as a bad fan motor or bad relay.

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Engine cooling fan only works when ac or defrost is on


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Nov 12, 2010 | 1997 Chevrolet Lumina

1 Answer

Electric fan does not work


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2 Answers

My coolant is not working? when driveing it stays cool but as soon as i stop the fan dosnot kick in ad i over heat?


The coolant is working well, because the engine stays cool while driving. The problem is the fan relay, fuse, or the fan itself. Do you have AC? If so, turn it on and you should have instant running of the fan. The normal operation of the fan is: the engine thermal sensor tells the computer that it is getting hot which in turn tells the fan relay to turn on and that is supposed to turn on the fan itself. The fuse protects the high current wire to the fan. Try to turn the fan blades by hand--if stuck or very hard to turn, replace the fan motor. If you can't find the fan relay in the fuse compartment, it may be a solid-state device that is located near the fan motor. Chase the fan wiring back to the relay. Hope this helps!

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1 Answer

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Do not let this car over heat a blown head gasket will ensue. Locate and replace the fan relay, if that doesn't fix the problem unplug fan and use jumper wires to ground the plug then feed power to the positive side of plug to check fan, if that doesn't work replace the coolant temperature sensor located somewhere near the intake manifold or thermostat housing area.

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1 Answer

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The fan is control by a thermostat.
When the radiator reaches about 200 degree F. it should turn on.
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When you turn the air condition on then the fan should also turn on.
Start with the cheap part which is the thermostat.Then work for there.

Mar 10, 2009 | 1995 Mercury Villager

1 Answer

Grand Am 4 cyl. Car - Fan does not turn on


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Sep 17, 2017 | 1996 Pontiac Grand Am

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