Question about 2002 Pontiac Grand Prix
Maybe 2 reasons. 1. bad sensor that needs changed and 2. may need intake manifold gasket changed especially if this is or has been an intermittent problem. i had this problem and changed the sensor which was bad. then a month later i had the same problem. i added coolant and light went out then 2 weeks later it came back on. i researched it more and found that the intake manifold gasket failure would produce the same results over time. i changed the "bad intake manifold gaskets" and have no problem now.
Posted on Jun 25, 2009
THERE IS A PROBLEM WITH THESE SENSORS, IF THE COOLANT ISN'T LOW REPLACE THE SENSOR.
Posted on Jun 24, 2009
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Posted on Jan 02, 2017
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