Question about 2003 Saturn VUE

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What causes a engine not to heat through out?

I have a 2003 saturn vue. I had to replace the engine. After replacing the engine, the car would not heat the inside. The mechanics change the thermostat. He said the engine temperature was approximately 176 degrees now it is over 230 degrees. He is claiming now that only part of the engine is heating. After spending over $350 I still have a problem. He said that it could be the water pump. Is there anything else I should consider before replacing the water pump?

Posted by zhap861 on

  • Jeff Hammack
    Jeff Hammack May 11, 2010

    yes, while the engine is warm and you have turned on the heater, check the heater hoses under the hood, are both of them hot? does it produce heat only when the engine is reved up?



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Joe Lamb

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Make sure theres no air in system..Your heater core could be plugged..Your fans may not be working,Or it very possibly could be the water pump.Or the radiator could be plugged not letting it circulate water..Could also have thermostat in backwards causing it not to flow also..Hope these help you find your problem and good luck Have a Great Day...

I’m happy to assist further over the phone at

Posted on Apr 02, 2009


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1 Answer

2003 VUE-how do i locate/replace coolant temperature sensor

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