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Old 04-17-2012, 04:40 PM   #1
sugar ray
GAGT - Member
AKA: Sean
Join Date: Jun 2008
Location: Canada
Posts: 224
Vehicle: 2002 Grand Am
sugar ray Gettin' there
P0128 - Coolant thermostat

02 Grand Am 3.4 SES light came on today on the way home from work.

Pulled code with my OBD reader. Getting P0128 - Coolant thermostat (Coolant Temp Below Thermostat Regulating Temperature)

Thermostat a simple replacement, any chance the sensor is TOAST or a new thermostat should cure the problem?? It has NEVER been changed. Probably should have replaced it when I did the lower intake gasket?? No big deal!!

Just lookin for a few experts to chime in here... thanks
sugar ray is offline   Reply With Quote