I need help locating the thermostat housing on my husband's focus. It is a 2006 ZX3 with 142k. My husband drives 40 miles 1 way to work and about 32 of them are highway miles and the other 8 are very little stop and go. The check engine light comes on and the OBII code is P0128. In March I just replaced one of the radiator lines - the plastic one you can only get from the dealership and flushed the system and replaced the coolant with Peak Antifreeze & Coolant.
Before I get a new thermostat, I need to know if I need to get just the thermostat and housing or should I get the thermostat with the sensor? See my pics, as the car doesn't run hot at all, so maybe the the sensor is bad?
Tonight I took the car out to run some errands, granted it was at night and not during the heat of the day, but the highest temp I could get was 179 degrees. This was with the a/c on full blast.
With the heat on