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P0128 Diagnostic Trouble Code Discussion for December 2011

Thermostat System Malfunction


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Trouble Ticket Help Requests for DTC P0128
Help Request Posted
2005 Chevrolet Impala LS 3.8L No Start VIN: 2G1WH52K55
P0128: Engine Coolant Temperature Below Thermostat Regulating Temperature. cust complained of int. but frequent cranks but no start cond. will start after letting it sit or trying several different times. cust says vehicle has sputtered at stop lights 1or2 times but never stalled. customer doesnt think security light was on (I forgot...
December 08, 2011
2006 Chevrolet HHR LT 2.4L MIL Lamp on VIN: 3GNDA23P86
P0128: Engine Coolant Temperature Below Thermostat Regulating Temperature. ... There is an 06 Chevy HHR in here and has check engine light on and no reading on temp gauge. Customer says he will be driving and the gauge dies and the light comes on. Also when this happens remote start doesnt work and a/c has poor performance. Remote st...
December 22, 2011
2006 GMC Envoy XL SLE 4.2L Poor Fuel Economy, MIL Lamp on VIN: 1GKET16S56
P0128: Engine Coolant Temperature Below Thermostat Regulating Temperature. I have some confusion the dealership is saying the coolant temperature sensor for the guage is located right rear behind the engine of cylinder head, however there is the coolant temperature sensor shows same part number but is there two of them and where are ...
December 30, 2011
2006 GMC Envoy XL SLE 4.2L Poor Fuel Economy, MIL Lamp on VIN: 1GKET16S56
P0128: Engine Coolant Temperature Below Thermostat Regulating Temperature. I have some confusion the dealership is saying the coolant temperature sensor for the guage is located right rear behind the engine of cylinder head, however there is the coolant temperature sensor shows same part number but is there two of them and where are ...
December 31, 2011
2005 Chevrolet Impala LS 3.8L No Start VIN: 2G1WH52K55
P0128: Engine Coolant Temperature Below Thermostat Regulating Temperature. cust complained of int. but frequent cranks but no start cond. will start after letting it sit or trying several different times. cust says vehicle has sputtered at stop lights 1or2 times but never stalled. customer doesnt think security light was on (I forgot...
December 08, 2011
2006 Chevrolet HHR LT 2.4L MIL Lamp on VIN: 3GNDA23P86
P0128: Engine Coolant Temperature Below Thermostat Regulating Temperature. ... There is an 06 Chevy HHR in here and has check engine light on and no reading on temp gauge. Customer says he will be driving and the gauge dies and the light comes on. Also when this happens remote start doesnt work and a/c has poor performance. Remote st...
December 22, 2011
2006 GMC Envoy XL SLE 4.2L Poor Fuel Economy, MIL Lamp on VIN: 1GKET16S56
P0128: Engine Coolant Temperature Below Thermostat Regulating Temperature. I have some confusion the dealership is saying the coolant temperature sensor for the guage is located right rear behind the engine of cylinder head, however there is the coolant temperature sensor shows same part number but is there two of them and where are ...
December 30, 2011
2006 GMC Envoy XL SLE 4.2L Poor Fuel Economy, MIL Lamp on VIN: 1GKET16S56
P0128: Engine Coolant Temperature Below Thermostat Regulating Temperature. I have some confusion the dealership is saying the coolant temperature sensor for the guage is located right rear behind the engine of cylinder head, however there is the coolant temperature sensor shows same part number but is there two of them and where are ...
December 31, 2011