Why is the radiator not working on my Chrysler 300?

If the radiator fan is not working, it’s a serious problem. Just because the radiator fan is not on does not mean that it is not working. They are designed to only run when needed. If your 300 is running hot, and the fan is not running we’ve laid out the most common causes of this issue below.

Why are my coolant fans not running when AC is turned on?

Coolant fans not running when ac is turned on. AC compressor clutch engage then it will disengage. System has freon in it. It was working find but now nothin7. My car has 234565 miles. My car has an automatic transmission.

What happens when you fill up the radiator fan?

If you do have low coolant, don’t fill it up until the engine has cooled off. Adding coolant to a radiator dry enough not to trigger the engine temp sensor can cause problems from drastic temperature change. Let it cool down first.

Why is the radiator fan not working on my Chrysler 300?

If your 300 has a bad engine temp sensor the radiator fan won’t know to come on, because the ECU won’t know how hot the engine is. You’ll need to locate and test the engine temp sensor. Depending on the model year and engine, the location varies.

Should the radiator cooling fan always run when the a / C is?

A/C isn’t cooling ok till you start driving. Sitting still it doesn’t cool and the rad fan only seems to run when engine temp is calling for it. I changed the low speed fan and high speed fan relays and get the same result. Any advice?? Day2 Test all fuses with a test light ..

Why are my cooling fans not turning on?

If the compressor is running long enough to build heat in the high side of the system, and the cooling fans don’t turn on, I would begin finding the fan relays and add power to the appropriate circuit to see if the fans turn on at all. This will require a wiring diagram.

What to do if your radiator fan is not working?

The first thing that you would want to do is locate the fuse for your 300’s radiator fan and make sure that it hasn’t blown. If it is blown, replacing the fuse will only solve the problem for a very limited period of time. Unless the wiring issue is fixed, the fuse will blow again.

What does it mean if your radiator fan is not working?

Your Chrysler 300 ‘s radiator fan has one of the most important jobs on the vehicle. It is the last line of defense between you and an overheating engine. If the radiator fan is not working, it’s a serious problem. Just because the radiator fan is not on does not mean that it is not working. They are designed to only run when needed.

Where is the relay on a radiator fan?

The fan relay is often located in the engine bay’s fuse box, but the best way is to check your repair manual to find where it is located. Testing a 4 pin relay is often very straightforward. Remove the relay and give 12 volts to pin 30 and 85. Ground pin 86 and check if there is voltage coming out from pin 87.

What should I do about my Chrysler cooling fan?

Chrysler cooling fans are a common fault. However they can be a little puzzling to test. Review the electrical diagram before you begin and this should help Chrysler cooling fans are a common fault. However they can be a little puzzling to test. Review the electrical diagram before you begin and this should help Skip navigation Sign in

Why does my PCM not turn on the fans?

You are looking to see if the PCM sends power to one or both relays to turn on the coolant fans. This should happen as the high side of the system approaches 214 psi. If it exceeds this amount of pressure and the system doesn’t turn on, one of the sensors in the system that the PCM uses to know when to turn the system on and off has failed.

Why is my air conditioner not blowing cold air?

One of the most inconvenient vehicular problems is when the A/C won’t blow cold air. If your Chrysler 300 isn’t keeping you cool, we’ve outlined some of the most common reasons why this might be happening. The only thing that the air conditioning system has in common with the heater is that they both use the climate controls and the blower motor.

What to do if your air conditioner is not working?

Replacement of most air conditioning components requires complete evacuation of the air conditioning system with a refrigerant recovery machine. Once components are re-installed, the technician will remove all air from the system in preparation for recharging the system with new refrigerant.

Is the cooling fan relay on a Chrysler working?

The cooling fans on Chrysler cars are not particularly well-made, but that doesn’t mean you can assume that they are broken the second the cooling system stops working. Watch this video to figure out how to diagnose problems with the cooling fan relay on a Chrysler.

Is there a way to test a radiator fan?

You can test the electrical radiator fans by taking a wire from the car battery, unplug the radiator fan connector, and put 12v+ and ground into the connector. This is the fastest and easiest way to test your radiator fans. Because the radiator fan is often drawing so much power, there is often a relay that is powering the coolant fan.

Where is the radiator fan relay on a Dodge Grand?

If the Radiator fan control module has failed you will need to replace it with a new one there is no way to repair it. The radiator fan relay is located below the left front headlamp module. The headlamp module must be removed to access the relay. Open hood, disconnect and isolate the battery negative cable.

Why is the heater not working on my Ford Escape?

If the neither hose has any heat, you may have air in the cooling system, low fluid, or low pressure. If you look at your temperature gauge, and the engine is running hotter than normal, but there is not heat coming from the heater you may be having issues with the water pump.

How to flush a radiator and do a DIY coolant change?

Install the radiator cap and run the engine. Install the radiator cap and run the engine for 10 minutes with the heater on maximum. Only run the engine outdoors or in a well-ventilated area. Turn off engine and allow radiator to cool. Repeat drain procedure.

How do you cool a Chrysler Pentastar engine?

Run the engine with the radiator cap installed, so that the system builds pressure. Holding the engine at 3000rpm for 2-3 minutes may help, or a short drive (less than a mile) with the heater still set to full heat may help move the air to the radiator so it can be purged. At this point it is likely the coolant will be boiling in the engine block.

What to do if your car radiator is hot?

Turn off the engine and let it cool for 15 minutes. Ensure that the engine is cool to the touch before you move on. The cleaner and water will be hot after running through your vehicle and hurt you if you touch it. Open the pressure cap and petcock to drain the radiator.

What are common reasons my Chrysler 300 overheats?

What are common reasons my Chrysler 300 overheats? While there are a variety of reasons your Chrysler 300 is overheating, the most common 3 are a coolant leak (water pump, radiator, hose etc.), the radiator fan, or a failed thermostat. When the radiator fans stop functioning properly, the engine temperature will rise.

What to look for when flushing a radiator?

Once you’ve determined whether you are going to do a complete flush or just a radiator drain/full, proceed by opening your hood and secure it so that you can inspect your radiator along with all the attached hoses. Keep an eye out for any leaks, cracks, or stressed-looking rubber. A worn and damaged hose may need to be replaced.

What causes an oil cooler to mix with coolant?

Faulty Oil/Coolant Heat Exchanger On a lot of modern cars, there is an oil cooler installed on your car, which is cooled by the coolant. Sometimes a gasket or a crack could occur inside the oil heat exchanger and it will cause the oil and coolant to mix up.

Why is the radiator not working on my Chrysler 300?