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Jeep Cherokee Radiator Fan

Reasons Why Your Jeep Cherokee Radiator Fan Failed

Your Cherokee's radiator is your first line of defense against overheating, but during an emergency, it's your radiator fan that comes to the rescue. A faulty radiator fan often leads to overheating problems, so it's best to replace or repair it immediately. Here are some troubleshooting tips to help you figure out your Jeep Cherokee radiator fan problem:

Weak air conditioning performance

If your air conditioner can't cool your vehicle's cabin properly or if your engine really heats up whenever you turn your air conditioner on, you might have a bad fan relay. Try turning your air conditioner on max and see if your radiator fan comes on. Even if it doesn't turn on instantly, your radiator fan should start running a few moments after your air conditioner was switched on. If it doesn't, your fan relay needs to be replaced.

Noisy or slow radiator fan

If your radiator fan works but is particularly noisy, or if your fan spins very slowly, there is a big chance that your fan motor is already defective. You can try supplying power directly from your battery to your radiator fan with some jumper wires. If your radiator fan still creates a lot of noise and runs slowly, then you have to replace your damaged fan motor.

Overheated engine

An overheated engine can be caused by a defective coolant temperature switch. Your coolant temperature switch is supposed to signal your radiator fan to run when your coolant exceeds the switch's rating of about 200 degrees Fahrenheit. If your fan doesn't run even though your temperature gauge shows that your engine is already too hot, you should probably get a replacement coolant temperature switch.

Other troubleshooting techniques

A visual examination of your radiator fan and all its related components such as the fan relay, fan clutch, fuses, and wirings can also help you identify the root of your radiator fan issue. Look for signs of corrosion, buildup of dirt, and other indications of wear in these components. Using a digital multimeter, you can also test if your fan's fuse and wires are giving out the proper resistance.

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  • Three Ways to Keep Your Jeep Cherokee Radiator Fan in Top Condition

    With your Jeep Cherokee radiator fan, you are able to fire up your engine beyond your radiator's cooling capacity without worrying about overheating. However, too much dirt, heat, and vibration will eventually take their toll on the radiator fan and cause it to fail. To make sure that your radiator fan performs at its best, follow these maintenance tips:

    Keep your radiator fan clean.

    The location and function of your radiator fan makes it vulnerable to lots and lots of dirt. A dirty radiator fan not only performs poorly; it also transfers much of the dirt to the radiator itself. Cleaning the radiator fan is actually pretty easy. Using some degreaser, a rag, and some pipe cleaners, you can remove dirt, tar, grease, and other debris that have been stuck to the fan. Apart from cleaning the fan blades, make sure that you also clean the connectors and other small parts of your radiator fan.

    Regularly test your wires and fuse for proper voltage.

    Blown fuses and faulty wiring are also very common reasons behind radiator fan failure, so you should always check on these components to make sure that they are in tiptop shape. Using a voltmeter or multimeter, check if your fuse and wires are giving out the usual 12 volts required by your radiator fan to run. If not, you should check for any loose connections or breakages in the wires and replace the damaged components immediately.

    Do a visual check on your radiator fan.

    Some radiator fans run too quietly that you don't hear them come on. In this case, you should check if your radiator fan is functioning by turning on the air conditioning or running your engine on idle for a couple of minutes. Look at your radiator fan and see if it starts to run when your engine begins to get too hot. It is advisable to do this every now and then, so you don't have to wait until your car overheats and stops in the middle of the road before finding out that you have a broken radiator fan.