Having problems with your 2000 Chevrolet Monte Carlo ?

Colling fans on 2000 monte carlo not working - 2000 Chevrolet Monte Carlo

Posted / edited by AnonymousUser on : 21-06-2021

Answers :

A lot of different opinions but not much info to determine exactly what the person's problem really is.
Always check your fuses first!
But, if it's the radiator fans that is not working, try this. First pop the hood & crank the engine. Turn your a/c on see if either of the fans come on. Anytime you turn the a/c on the relay should make your fans come on or at least 1 of them.

If neither fan comes on, shut off engine. Disconnect the wire plug that powers up the fan and with a voltmeter check to see if your fans are getting any power, key on a/c on.
If still no power, reconnect the plugs back to the fans and then I would identify and check the power at the relay that controls the fans. It should be in the main power & relay center under the hood.

Try this, with the key on, engine off pull your relay out that controls the fans and Identify your main power source. If you look at the relay on it's side is a wiring diagram, there will be a set of numbers that id's which wire and what it does. For example, you will have 2 wires that actually powers the fan (supplies 12-14 volts) the other 2 wires actually actuates the relay (turns it on & off).

Once you id the the 2 main power wires, (1 of the main wires will be a number 30, the other I can't recall) take a short jumper wire and complete the circuit. BE CAREFUL to make sure you are connecting the 2 correct circuits! But, by completing the circuits the fans should come on.

If the fans power up, comes on, then I would recommend replacing the temperature sending unit/switch. After replacing the temp switch
check & see if the fans come on. Make sure you reinstall everything above and make sure your coolant level is at it's correct level.

These engines are equipped with bleeder valves where if you drain the coolant or if the coolant gets to low you have to open both valves to get all the air out of the engine or it will run hot and can do a lot of damage to your engine!

Make sure you know what you are doing, experience goes a long way as well as common sense and the understanding of the basics makes all the difference in doing a good job or messing up and actually doing more damage than good!

If non of this works, you will probably have an issue with the pcm. The pcm actually monitors the temp given by the temp switch to run the fans. You have an option of straight wiring the fans, that isn't hard to do but make sure it is done right! If not, you could cause more harm than good. Hope this helps!
Repair Help & Product Troubleshooting for 2000 Chevrolet Monte Carlo

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