Question about 2004 Jeep Grand Cherokee

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2004 Jeep Grand Cherokee (4.0L)...The temperature gauge slowly heads to the "Red" as if it my car were overheating, but the there are no signs of overheating and the Coolant in the reservoir starts to boil when the gauge hits the "red". Oil has been changed, thermostat and gasket replaced, water pump is fairly new, radiator cap has been replaced. Any suggestions?

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When running the engine TOUCH the bottom part of the radiator fins, if the temperature is not the same or cold, u got a blocked radiator FiNS, and u need to replace it! Check also ur Radiator fan, note down what temperature it started to work. If the Fan works at high temp, means ur TEMPERATURE SENSOR switch for rad fan is not working or it has a higher temp operating value! Hope that might solve ur temperament! j/k!

Posted on Nov 08, 2010

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Your fan probably needs to be replaced, that was what was wrong with mine, it would not kick in to hi. mine had 2 speeds, low would work so no one thought that was it but hi did not kick in and it would overheat.

Posted on Nov 27, 2010

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Common fault is fuel pump getting damaged after engine overheating.

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If fuel pressure is OK, check injection and distribution.

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