1998 grand prix over heating

Asked by Robertsr74 Feb 15, 2010 at 07:35 PM about the 1998 Pontiac Grand Prix

Question type: Maintenance & Repair

the top radiator hose gets hot but the bottom one does not. no heat in the car and i have replaced
the thermostat. coolant level is good.

5 Answers
8,295

Danny answered 14 years ago

assuming that you are not getting heat from the vent, my guess is that something is blocking coolant flow to or from the heater core (supplies heat for interior comfort)

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Adam answered 14 years ago

when you replaced the thermostat did you burp the system?

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Bill answered 14 years ago

Check your heater core and the water pump. Also, it is possible that there is an air bubble in the system. Pressurize it to clear the air and improve water flow.

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rocky121 answered 14 years ago

how do you get all the air out or bulp it like you say

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Sean answered 14 years ago

I have the same exact problem. but I replaced the therostat. and the temp still goes up when the car idles. then it goes down when I take off..

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