1996 Pontiac Bonneville 6 cyl Automatic 112000 miles
my check engine light came and the heater stoped working on so I went to the part store and had them run a test on it and it came back that it might be the thermostat so I changed the thermostat the check engine light turned of but the heater still wasnted working then I noticed the car would start to ge hot and then the heater would kick on for a second and the temature would go back down and withen a few minutes it would go back up again and then the heater would kick back on for a few seconds and again the tempiture would drop now it is to the point where it gets hot enuogh to make the check gages light to come on cuase the the tempture gage is in the red zone but after a minute or two the heater will come back on for a second and the tempature will drop back to normal again so im wondering if you guys might have a answer to this question thankyou verry much
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Monday, February 15th, 2010 AT 2:26 PM