radiator fan not working when idle

2 Detach the wiring harness clips and remove the cooling fan to shroud mounting bolts 3. 2 check the 2 wires from the controller to the fan.

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If the radiator fan is in working condition move on to the next step.

. The fan switch is on the rad. Yes the fan will come on when you turn the AC on so that proves the fan works. Step 4 Check the engine coolant temperature ECT sensor.

I believe one runs off the belt and the other runs off relay. 3 If all the above signals and wires are good and fan not running then its a bad fan. Radiator fan not working.

Im putting together a video of my 1991 SC 5-Speed starting up and running. But my question is about the fans. Check for power on the plug.

Going to put blue devil sealant in it and try to fix it. If the cooling fan motors burn out or fail the cooling fans will be disabled. With AC turned on there should be 12V PWM signal across the wires.

Hey guys here we bring you another fix. Remove the lower engine cover and disconnect the electrical. Cooling fans do not come on.

See Contact Test in Step 1. Pull the fan assembly. However if the ac doesnt operate as in no cooling or the compressor doesnt turn then the cooling fan wont turn on.

If you got 12V and fan still not turning you need new fan. The system has a low and high speed fan that is controlled by the ECM. Make sure the fuse for the radiator fan is intact.

If it is not replace it immediately and this should take care of the problem. If you dont know where the fuses are in your vehicle consult your owners manual to see which fuse controls the cooling system. AC blowing warm when at idle.

Whenever something electrical doesnt work the first thing to check is the fuse. Leave the AC off for the rest of the test. The most common symptom of a faulty cooling fan motor are cooling fans that do not come on.

If you have the system scanned with the correct device you can turn the fans on and off from the ECM to check if the. Fan is constant on when the switch is unplugged so youll have 12V on the fan plug with key at On. When an extra load is put on the electrical system rad fan the alternator increases its output which puts an extra load on the engine.

It idles rough when cold and the radiator fan doesnt kick on when its supposed to. The computer will usually compensate for this quickly via opening the air bypass valve more. Dont need to start engine.

Radiator fan testing points. Best to measure this with an oscilloscope. No the AC will turn the radiator fan on to pull air across the condensor.

Broken Fuse A blown fuse can happen when there are electrical surges going towards a piece of electronic equipment forcing the fuse to cut the electrical supply in order to save the equipment from an overload. My car has 2 main problems Im trying to solve. Unplug the fan.

Im hoping someone out there with more Super Coupe experience can. Up to 8 cash back Usually a bad or failing cooling fan motor will display a few symptoms that can alert the driver of a potential problem that should be serviced. Radiator Fans not working AC intermittent.

Unplug the radiator fan connector. If you you dont have 12V at the fan plug its fuse or broken wire. It has got two fans on the radiator and its not working or kicking on.

Up to 8 cash back The radiator fans have three different relays in the relay box in the engine compartment and they are all controlled by the Engine Control Module ECM. Depending on the ambient temperature in your location this should be long enough for the coolant temp to get hot and the thermostat to open up. Your going to need to check for power at the fan the fan can still be failed and spin just fine by hand considering you dont have high or low I would lean towards a fan or fan connector concern.

It started off getting hot in idle but would cool off once accelerating but ended up blowing head gasket. 1 Raise the vehicle and support it securely on jack stands. There are two avenues for the cooling fan to turn on.

Run jumper wires between the connectors two electrical terminals. If the fan does not turn on you will need to replace it. This is a 2 in 1 special.

Radiator fan does not turn on when overheating. When I bought this car for my brother it came with some codesP0302 - misfire cylinder 2P03. Start your vehicle and let it idle for 10-15 minutes.

Find it unplug it. Try to measure the voltage in AC mode not DC. There are a few common reasons why your radiator fan is not turning on.

Normal coolant temperatures rising where the temp gauge indicates on or near the redline or when the ac is turned on. 3 If the fan. Cools down and runs at normal temperature when driving.

If your idle is dropping too much for too long then the bypass valve could be the issue.

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