Sometimes when i look at the air temps, the #s are just going up and down real fast. Down to 25C and up to 55C. THen it chills and goes to the correct temp. What you guys think is happening. Normal? PFC is wako, temp sensor is gone, any thread to my motor? THnx.

 

Most likely a loose wiring connection to cause such quick drastic fluctuations.
Check out the sensor wiring, and also pull the sensor and check it out per the manual.

These are the first logical steps to do.