I have a Jeep Cherokee 2002/3 3.7 V6 with overheating problem. I have changed the following: water pump, clutch fan, radiator and thermostat. running on pure coolant and it still overheat. It runs well for about 500km and then start to go in the red. please can someone help?

Asked by apie Jun 07, 2015 at 01:21 PM about the 2001 Jeep Cherokee Limited 4-Door 4WD

Question type: Maintenance & Repair

I have a Jeep Cherokee 2002/3 3.7 V6 with overheating problem. I have changed the following: water pump, clutch fan, radiator and thermostat. running on pure coolant and it still overheat. It runs well for about 500km and then start to go in the red. please can someone help?

2 Answers

725

have you checked or replaced the coolant temp sensor? should be connected to the thermostat housing. do you have pressure in the hoses? are you sure the engine had antifreeze? i have overheated and emptied my engine of all the antifreeze , after i filled the radiator and reserve you need to make sure the level goes down and enters the engine, if the hoses get warn or hot this would indicate proper flow, and the hoses should have some pressure buildup as well. hope that helps.

2 people found this helpful.
20

Pure coolant is an issue, drain some and add water, to correct mix ratio. Or buy premixed water and coolant.

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