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Jeep 4.0 Grand Cherokee


otel800's Avatar
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06-16-04, 03:02 PM   #1  
otel800
Jeep 4.0 Grand Cherokee

MY QUESTION IS THAT MY TEMP GAUGE GOES HIGH (260) WHEN I AM IDLED. WHEN I DRIVE IT SEEMS TO LOWER. I DONT THINK MY RADIATOR FAN MIGHT BE WORKING. IS THERE A FUSE OR ANYTHING I CAN CHECK TO SEE IF IT WORKS????

 
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06-16-04, 03:21 PM   #2  
Just use a testlight and test for power and ground at the fan with the engine hot and running. Sometimes bumping it with a screwdriver will jump-start it and you'll know it's a bad motor. Is there only one electric fan and does it come on with the A/C?

 
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06-16-04, 03:33 PM   #3  
otel800
No Does Not Come On With The A/c And Yes It Only Has One Fan.

 
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06-16-04, 05:06 PM   #4  
OK, could be bad fan motor but still needs to be tested for power and ground. It should run all the time with A/C on and when the temp reached approx 225 witout A/C.

 
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06-16-04, 07:42 PM   #5  
A Jeep 4.0 with an electric fan??? I dont think I have ever seen one that didnt have a clutch or viscous fan. Hmmmmm......
If it has an electric fan as Desi said you should see if you have power at the fan. IF you do its likely the fan is bad. I always test the fan first to be sure it works then see if I have power to it and work back.
Hope this is helpful to ya,
Billy

 
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06-16-04, 07:54 PM   #6  
otel800
how do i test?

 
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06-20-04, 11:26 AM   #7  
spooge031
the latest generation of grand cherokee has a electric fan and we see the solid state relay fail all the time, it is located UNDER the right headlamp "bucket" to do the job "right" you need to remove the front bumper and headlamp panel, but a 3" hole drilled under the bucket will allow acess to the relay, NOTE:make sure the fan works and dosen't vibrate after you replace the relay or you will be doing the job again and again

 
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06-20-04, 03:00 PM   #8  
Posted By: spooge031 the latest generation of grand cherokee has a electric fan and we see the solid state relay fail all the time, it is located UNDER the right headlamp "bucket" to do the job "right" you need to remove the front bumper and headlamp panel, but a 3" hole drilled under the bucket will allow acess to the relay, NOTE:make sure the fan works and dosen't vibrate after you replace the relay or you will be doing the job again and again
That sounds like some good advice.

 
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06-20-04, 08:29 PM   #9  
otel800
thanks for all the advice everyone!!! it turned out to be that relay under the front fender.thanks

 
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