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1998 Pontiac G6 P0128 Fault Code Check

When you check 1998 Pontiac G6 car engine light came on code P0128 the reason should be Engine Light ON (or Service Engine Soon Warning Light). However Pontiac manufacturer may have a different definition for the P0128 OBD-II Diagnostic Powertrain (P) Trouble Code. So you should chech it on our car models.

P0128 1998 1998 Pontiac G6 Code Clear

To solve P0128 1998 1998 Pontiac G6 problem, you'll have to remove the muffler, crankcase and other components blocking the valve chamber. Then, remove the cylinder head bolts (label for easy re-installation) Adjust the jaws of the valve spring compressor until they touch the top and bottom of the valve chamber Push the tool in to compress the spring and tighten the jaws Remove the retainers and lift out the valves , compressors and springs

1998 Pontiac G6 P0128 OBD-II Diagnostic Powertrain (P) Trouble Code Description

1998 Pontiac G6 car P0128 OBD-II Trouble Code Indicates that the thermostat monitor has not achieved the required engine operating temperature within a specified amount of time after starting the engine.

Reason For 1998 Pontiac G6 P0128 Code

The reason of 1998 Pontiac G6 P0128 OBD-II Fault Code Check is P0128 Coolant Thermostat Malfunction.
P0128 Code Reason

1998 Pontiac G6 P0128 Possibble Fix Ways :

The engine relies on the glow plugs to generate heat to help with the combustion cycle. Some engines only use the glow plugs when cold but others will allow the glow plugs to work when the ECU (vehicle's computer) needs them to be on to help with combustion. Problems in this area will cause diesel engine starting problems, uneven running and white smoke when the engine is cold.

While fuel economy was increased, acceleration was seriously compromised, and the loss of engine vacuum led to a dangerous loss of braking assist when the P0128 1998 1998 Pontiac G6 code system was in four-cylinder mode. In addition to these issues, while the company proposed a hydraulically controlled system that could be switched from within the car, the version they implemented had to be manually changed in the engine compartment using hand tools.

What does fault code P0128 mean for 1998 Pontiac G6 ?
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