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In cooler weather, it will take the fan a lot longer to be energized. One way to do a quick check, is to turn on the A/C. All the fan(s) should turn on with the A/C running. Some people call an engine a motor. So I am not sure if you are talking about the fan motor or the engine. If you are saying that the fan motor was checked and is good then the Thermal sensor is bad, or you have a loose or disconnected wire. The fan comes on at a predetermined temperature when it receives a siganl from the relay. you'll need to check the fan switch located on the radiator or there abouts, when you jump it the fans should come on...also make sure there is power to the switch...if theres power, and you jump it and they don't come on..its most likely the fan motor...if no power, there may be a bad relay or fuse...good luck also... everyone should have a manual for their vehicle, and a professional shop manual should be available at the library in the reference section--you can make copies of the necessary information...good luck :)
Wiki User
∙ 17y ago
Wiki User
∙ 8y agoIF RELAY HAS NOT BEEN UPDATED MOST LIKELY IT IS THE DEFAULT
The relay is under the battery and you remove the old and when the new revised
or re-engineered relay new holes have to be drilled. cost 75 dollors doing it your self.
found out some dealers try to charge 125? the below is good to start off with for routine stuff to check off the list.
now with the 2003 jeeps you need to check the 40amp under hood fuse first off. Fuse box located behind battery on side of fender . you should then check the fan motor. You can use jump leads and connect to pin with blue wire and the other pin being grnd/ blk wire and use a twelve volt source If fan works fine then relay is most likely culprit . when engine warms up to I think 95 degrees fan should kick on. disregard the rest of this info .
Revised. MOST LIKELY THE RELAY IS DEFAULT AND NOT TURNING THE FAN ON
AT THE PROPER TEMP AND WILL CAUSE THE ENGINE TO OVER HEAT
On a Jeep Liberty Limited 2003, the 40 amp fuse is in the fuse box under the hood and right by the battery. The fan relay is located about half way back on the drivers side, and is LOCATED UNDER THE BATTERY, AND NOT VISABLE. THE NEW RELAY HAS BEEN REVISED OR RE-ENGINENEERED AND NEW HOLE WILL HAVE TO BE DRILLED NOT A HARD JOB MAYBE 20 MINS OR SO. The relay has been modified in recent years and has cooling pins added. Modifications to the screw/hole placements will need to be made.
Wiki User
∙ 15y agoBlown fuse, defective fan motor, defective thermal relay, or disconnected wire. These Jeeps are know for the radiator fan relays to fail. It is located under the bumper cover under the right front headlight.
Wiki User
∙ 16y agoTest the radiator fan relay. It is located under the bumper under the right front headlight. You will have to cut a small access hole under the headlight to get to the plug.
Wiki User
∙ 15y agoThe relay has probably failed. It is located under the passenger headlight, under the bumper cover.
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What size tires come on a 2005 jeep Laredo?
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When adding engine coolant to an 2003 Jeep Grand Cherokee Low Coolant indicator has come on do you add only to the reserve tank or to the actual radiator as well?
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Did the 1998 jeep Cherokee come with a transmission cooler?
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