2000 Intrepid with no AC and overheats. Neither radiator fan comes on when AC is turned on. Possible fan relay?

Most often caused by a bad fan relay. This is a complicated system. Read the post below and download the GM wiring diagrams. Then check the fuses and relays. All 3 relays must be in perfect working order for the system to work properly.
Car overheats Ricks Free Auto Repair Advice

FAN RELAY

Check the Fan switch at the bottom of the radiator, if you disconnect it and have a power feed to the switch then it isn't a fuse.Bridge the terminals and if the fan comes on then the fault is probably the switch.

there is a relay switch for the fan if not that then. Turn your AC on and if the fan does not come on then replace the radiator fan. It is easy to do and cost about $20. I have had to replace this in my cavalier at least 3 times. They go out often.

When ever the car overheats,it is always the best thing on your car,to check the cooling fans.When the ac is on,look to see if the cooling fans are running,and running fast,and smoothly.In your case,I am going to go out on a limb,and say they are not.First check for blown cooling fan fuse.Then,if the fuses are alright,check the cooling fan relays,most likely more than one.One prong,or spade coming out of the relay,is ground(where it plugs up).To make the relay energize,ground this terminal with a test light .Just like you are using the test light to check for 12 volts.When you touch the ground spade on the relay it will energize the relay to turn the fans on.Just pull the relay out of it`s spot,just enough to touch the spade.Do this with the ac on,and engine running.The clutch relay on most cars will energize the relay,but the ac compressor is working on your car,so it is either the fan relay,or the high side switch on the ac system that is bad.Try and see if the cooling fans,both of them,or one of them,will come on by them selves as the car warms up,with the ac off.The fan or fans should come on,and go off by themselves.Don`t let the engine overheat,keep a good eye out not to let that happen.If the fans never come on,then,the fan,or fans could be bad.You can test them by running wire from battery to the fan,and grounding to frame.Now the fuse,or relay being bad will also cause this.If a fuse is blown,then ,one or more of the fans are bad,and will have to be replaced.The fans cool the radiator for the engine and transmission cooling,and the condenser for the ac system.If the condenser is not cooled down,the ac freon will be to warm to cool the vehicle.If I can help,let me know.>>[email protected]

could be fan relay, thats what fixed my problem

maybe the sensor that turns on the fans might of gone bad . . and turning on the ac when engine is gettin hot is not going to help instead turn on the heater to reduce the heat , also overheating causes hoses and gaskets to get soft and get destroyed

may have a restrictive radiator, leaking head gaskets can also cause overheating under loads. have your radiator flow checked and your engine block tested for leaking head gaskets

First and foremost--check the coolant level! Check for leaks, if possible, do a pressure test of the system.

Second--It is possible that one of your cooling fans (electric) is not working. The fans are controlled by temperature. They come on when needed. One of them usually comes on when the A/C system is engaged to pull air thru the AC system coils.

These are the first two steps to check!

Regards,

Brian

I just had my coolant flushed and my radiator cooling fan replaced. The car was slightly overheating and would "gargle" in the coolant bowl after I turned the engine off. It turned out to be the radiator was clogged up on one side.

I went full tilt and replaced the radiator, water pump, thermostat, radiator cap and timing belt. I have 85,000 miles on the car and it was about time to do these things anyway. It is running like a new car now.