Mechanics

PONTIAC GRAND AM COOLING SYSTEM PROBLEM

2005 Pontiac Grand Am • 47,800 miles

The heater runs hot as driving when I first turn it on, then goes to warm, and it will do the same cycle if I turn it off and turn it back on 2 mins later. At an idle it starts warm then goes to cold. My temp gauge also fluctuates between 195-215 as I am driving. Just changed thermostat, no change. Checked reservoir, shows it being to the full line.
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Kmahieu79
March 8, 2013.



The cooling system has to be bled. Your symptoms are tipical of air pockets in the cooling system. Take it to a shop and have them bleed it thoroughly.

Homer1967
Mar 9, 2013.