Question about 2002 Jeep Grand Cherokee

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Jeep keeps overheating have replaced fan and sensor

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You need to check your car for back pressure, get a clear bottle filled with water. while engine is running put the small hose from the radiator going to the reserve and put it in the bottle. if you see bubbles going out from the hose then you have to change your cylinder head gasket replaced.

Posted on May 27, 2010

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Posted on Jan 02, 2017

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Overheating engine in jeep liberty 2005


Obstructed radiator or plugged radiator, I didn't think that the Liberty had a fan clutch, I thought that it used an electric fan.

Picture of cooling fan

In the case of an electric fan there are relays and sensors involved plus the ECM (computer) is also in the mix to make that fan work.

I would suggest having the cooling fan diagnosed before doing anything else.

Jan 30, 2013 | 2004 Jeep Liberty

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Jeep keeps overheating replaced relay


A mechanic would use a scanner to check the engine temp sensor.
The temp sensor tells the computer what the engine temp is and the computer activates the fan relay when the temp reaches about 230 degrees.
Since you said relay I am assuming your Jeep has an electric radiator fan.

Jul 19, 2012 | Cars & Trucks

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How do I know if the fan relay has actually gone out in my 1999 Jeep Grand Cherokee?


Is the fan coming on when it overheats? If it is than its not the fan relay. It is likely the thermostat. If the fan is not coming on than it is likely the relay. They fail in two ways. One they do not turn on the fan and two they keep the fan on all the time. Let me know if you have any questions and I'll do my best to answer them. Thank you for using FixYa.com!

Feb 02, 2012 | 1999 Jeep Grand Cherokee

3 Answers

1995 Jeep Cherokee Sport. Keeps overheating. Replaced water pump, hoses, thermostat and belt. Runs between 220 & 240 without a/c on. Have been told it is either the coolant sensor or the fan...


Clutch Fan are known to fail over time, but I wold not rule out the radiator. The small passages inside the radiator will clog due to age. You did not mention how many miles are on the Jeep or if the Aux fan is kicking on.

Jun 28, 2010 | 1995 Jeep Cherokee

2 Answers

2004 jeep grand cherokee overheating


check the thermostat or your radiator might be stopped up

Apr 14, 2010 | 2004 Jeep Grand Cherokee

2 Answers

How do I know if my jeep has 1 or 2 fans? (I have 2 mechanics who are arguing-meanwhile, my car is overheating.) It currently has 1 electric fan, but my new mechanic is saying that I am missing the other...


They all have two fans. Only part is, on yours, I can't remember if they both are electric or if one is mechanical (belt driven). I know that the inline 6 cyl and the four cylinder ones have one electric and one mechanical, and am pretty sure that on the v8's they are both electric. Either way, there is never just one.

Mar 20, 2010 | 2000 Jeep Grand Cherokee

2 Answers

Overheating


IT COULD BE THE FAN FUSE OR FAN RELAY, IF THE FAN IS DRIVEN BY THE ENGINE TRY CHECKING THE FAN CLUTCH. IF THE FAN SPINS FREELY WHILE IT IS COOL, THEN WAIT FOR THE ENGINE TO HEAT UP AND SHUT THE ENGINE OFF AND TRY TURNING THE FAN BY HAND. IF THERE IS LITTLE OR NO RESISTANCE THEN REPLACE THE FAN CLUTCH. IF THE FAN IS ELECTRIC THEN REPLACE THE FUSE AND RELAY LOCATED UNDER THE HOOD IN THE FUSE PANEL. HOPE THIS HELPS. PLEASE KEEP ME POSTED. THANKS FOR AN HONEST RATING AND FOR USING FIX-YA. BEST OF LUCK.

May 17, 2009 | 1994 Jeep Grand Cherokee

3 Answers

2001 Jeep Grand Cherokee- fan that sits closest to radiator


Have you tested the fan sending unit on the engine? disconnect that and if the fan runs (Key on) that is most likely the problem.

Oct 17, 2008 | 2001 Jeep Grand Cherokee

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