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2004 jeep grand cherokee columbia edition

Replaced radiator, plastic inlet blown out, 2 thermostats, both fan relays and sensor on thermostat housing... still overheating in traffic, any thoughts?

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  • 225 Answers

Have you checked the water pump?

Posted on Oct 16, 2013

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Posted on Jan 02, 2017

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SOURCE: 2001 Jeep Grand Cherokee Laredo radiator fan doesn't turn on.

Check power to the relay. it can close, but if there is no power to it, it can't send anything to the fan.
signal goes from sensor, to the computer, to the relay. when it closes it transfers power from the hot side to the fan.

Posted on Jun 12, 2009

  • 1455 Answers

SOURCE: 2000 jeep grand cherokee is overheating, replaced

If the fans don't come on to cool the radiator then maybe it's the thermal fan switch, which sends the turn on signal to the fan relay, that might be bad.

Posted on Nov 23, 2010

SOURCE: 2001 jeep cherokee overheating have

You sound pretty good at this
Go to a local repair shop and have
them print out a wiring diagram
They will have to be successful enough
to subcribe to All Data,Mitchell,etc

Posted on Dec 04, 2010

  • 66 Answers

SOURCE: I replaced radiator and radiator

You need to go back to the fan relay you replaced and inspect the terminals closely for overheating and damage.

Posted on Apr 17, 2011

  • 1403 Answers

SOURCE: 2001 jeep grand cherokee laredo

suggest that you rent a pressure tester from auto zone or advance auto and preform a pressure test on your cooling system. follow the instructions on the test of pressure to your cooling system,also check for coolant leaks onto the ground from radiator area. may be bad water pump,broken hose,heater hose,upper radiator,lower radiator,or a bad radiator itself. a simple pressure tester will reveal the coolant leak. but make sure to follow the instructions with the pressure tester,as you can damage your coolant system otherwise. thank you for choosing fixya.com


















Posted on Sep 17, 2011

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1 Answer

2000 jeep grand cherokee is overheating, replaced the radiator, face works, water pump seems to be working, replaced the fan relay. thinking of replacing the thermostat and wondering what it could be if...


If the fans don't come on to cool the radiator then maybe it's the thermal fan switch, which sends the turn on signal to the fan relay, that might be bad.

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I have replaced the radiator on my 2000 Grand Cherokee and now the on board computer reads" open circuit"in the place where the temperature should be displayed. please assist.


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1 Answer

How do you replace the fan motor in '03 jeep grand cherokee laredo? - the damn thing overheats when idle - changed the relay & coolant sensor... still overheating


When was the last coolant change?
Under 2 years or 24,000 miles.

Change the thermostat and gasket first.

Use a 195F with pop-let protection.

A stuck/failing thermostat is a common cause of over-heating problem.

======
To change the fan,the entire protector plastic has to come out.

Most likely you will break the push in locking pins.

Get few replacement push in locking pins before you start the job.


Dec 02, 2009 | 2003 Jeep Grand Cherokee

1 Answer

2001 Jeep Grand Cherokee Laredo radiator fan doesn't turn on.


Check power to the relay. it can close, but if there is no power to it, it can't send anything to the fan.
signal goes from sensor, to the computer, to the relay. when it closes it transfers power from the hot side to the fan.

Jun 12, 2009 | 2001 Jeep Grand Cherokee

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I need to know what all has to be taken off, the easiest way, to replace a radiator fan motor for a 2001 grand cherokee?

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