it wouldn't hurt to throw in a 180tstat

 

I BELIEVE THAT IS WHAT I AM GOING TO DO; ALSO DID A SEARCH AND FOUND OTHERS HAD THE SAME PROBLEM AND A TSTAT CHANGE SEEMED TO BE THE ANSWER. THANKS!!!

 

The PCM predicts what the engine coolant temperature should be, based on the engine coolant temperature at start-up, ambient temperature and how the vehicle is subsequently driven. The predicted engine coolant temperature is compared to the Engine Coolant Temperature Sensor reading. The error between the two is calculated and integrated with respect to time. When the Thermostat diagnostic runs, the integrated error is compared to a calibrated threshold and pass/fail is determined. Separate pass and fail thresholds are used in order to improve accuracy of the diagnostic.

• When Monitored:
  Engine running.
• Set Condition:
  The PCM predicts a coolant temperature value that it will compare to the actual coolant temperature. A significant
  difference results in an error. Two Trip Fault. Three good trips to turn off the MIL.
• Possible Causes
  LOW COOLANT LEVEL
  THERMOSTAT OPERATION
  SIGNAL CIRCUIT SHORTED TO BATTERY VOLTAGE
  TEMPERATURE SENSOR
  SIGNAL CIRCUIT OPEN
  (K900) SENSOR GROUND CIRCUIT OPEN
  SIGNAL CIRCUIT SHORTED TO GROUND
  SIGNAL CIRCUIT SHORTED TO (K900), (G931) SENSOR GROUND
• OTHER POSSIBLE CAUSES
  PCM

My guess is either your coolant is low, or your thermostat is stuck open, making the engine take too long to come to operating temp and enter closed-loop mode.

 

HC, you just like posting that today, don't you?

 

A fortuitous serendipity... :laugh:

 

Well HC is right

Just need a new thermostat

180*