Question about 2002 Jeep Wrangler

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I dont have heat and engine over heats.While running coolant gets pushed into my resevior tank and almost over fills it. When I turn it off Radiator steams and coolant goes back into radiator still have no heat. Temp above 230 I fell maybe I have a bad water pump or bad head. please help have tried just about everything

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  • kjbd Mar 04, 2009

    i put a new thermostat in[ correctly], new radiator new coolant 50/50 still no heat and when i run engine coolant goes into resevior tank ,almost overfills it .When i turn engine off radiator steams and coolant returns to radiator temp is about 235 I dont think pump is working bottom hose on radiator is cold Please help have try just about everthing

  • mike loshbough
    mike loshbough May 11, 2010

    you may be right on the water pump also these are very hard to bleed system

  • mike loshbough
    mike loshbough May 11, 2010

    what have you tried.?

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  • Jeep Master
  • 6,982 Answers

It's not the water pump. pumps can leak and shaft bearings go bad, but even then it is pretty much impossible that the pump won't pump. I'd start by changing thermostat. When re-filling, add coolant slowly and just when it reaches operating temp, shut it off for about two minutes. re-start, turn heater on high and continue filling till electric fan comes on (if you have one) at that point turn off again as before. Re start and run with cap off for about 15min. If overheat continues, remove radiator and flush, and bring to a shop to determine if there are any hydrocarbons in the cooling system. If so, there is a problem with either head gasket or head. (likely you will have fixed it before you get this far.)

Posted on Mar 04, 2009

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