Just fired up unidiag to test the sensors on my car and when i test the water temperature it hovers around 73-74 degrees C. however the engine is fully warmed up and the temp dial in the car is just above 90 when the fan kicks in. do you think my temp sensor has gone or maybe the dial inside isn't displaying the temp correctly?
The idle is a little erratic when cold as well and a little hesitant under 3000 rpm this improves when the engine is warm but doesn't go away over 3000 the performance is fine. i also notice the lambda sensor voltage alternates between 65mv and 700mv is this within normal operating parameters? i'm also getting a dtc error :
(p0170, fuel trim malfunction (bank 1)
state s.c. to ground/ below bottom limit, intermittent)