Question about Jeep Cars & Trucks
Got hot while ideling in parking lot the cooling fan was not running but it would come on if you turned the ac on.
Are you sure the fan is a problem?. it is only turned on when the engine reaches 225+ degree's F, so it seldom runs.
Posted on Oct 31, 2012
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Posted on Jan 02, 2017
the sending unit has went bad. it comes on with the ac because it designed to overide the high temp sending unit or switch. should cause less then 50 bucks to get it replaced and only a few bucks if you do it yourself
Posted on Jul 22, 2008
your coolant temp sensor on the engine block is probably faulty, however, keep in mind that if it really isn't all that hot outside they may not need to turn on. Once you activate the A/C the fans come on automatically since they have to cool the condensor...
If your car is not overheating do not worry about it.
Posted on Aug 29, 2008
you need to replace the cooling fan because the resistor is in the cooling fan and it is best to go to a salvage yard and have them look it up on a computer and it will tell what fan will work on your car
Posted on Jan 12, 2009
the relays control circuit is grounded by ECM (computer) . to check this make sure the is hot enough for the fans to be commanded on by computer and check to see if you have voltage at relay and it has ground from computer . you may need ECM.
Posted on Jan 28, 2009
Do not let this car over heat a blown head gasket will ensue. Locate and replace the fan relay, if that doesn't fix the problem unplug fan and use jumper wires to ground the plug then feed power to the positive side of plug to check fan, if that doesn't work replace the coolant temperature sensor located somewhere near the intake manifold or thermostat housing area.
Posted on Jul 01, 2009
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