Hello i have a 1995 Pontiac Grand Prix se with the 3100 motor in it.
when i purchased it i ended up 2 weeks later having to put all new gaskets in it, Head gasket, intake gasket the whole works, new thermostat
everything. Well car was perfectly fine no problems at all heated well ran well like a top. Went from NY to Florida no problems at all ..
Now we get back and now the temp guage wants to play games.
Rise al lthe way up slowly come down rise up again over an over
throws heat when the guage is down cold air when guage is up
we have replaced the thermostat again twice
we arent loosing coolant the collant is staying full and we have even tried to bleed out the air in it many times
plz if anyone can help plz do the car is in too good of shape and only has 75,000 miles
Thanks GM USER IN NEED