I suspect these sypmtoms are related as they both seemed to appear at the same time. 1997 Pontiac Grand Prix GT with 143,000 miles. I started noticing my engine temperature gauge will climb to 220 if I am not moving so I've been turning on the heater to keep from overheating. If I'm in motion it rarely climbs above the 180(ish) mark.
I replaced the thermostat and checked the coolant which was fine. I read about someone with the 3.1 engine having similar troubles needing a temperature sensor. I bought a "Coolant temperature sensor" but hvae not installed it yet becuase I'll have to remove the upper radiator hose to do it and I want to make sure I'm on the right track.
have the same problem?
Friday, March 2nd, 2007 AT 1:25 PM