Hi All My daughter's car's check engine light recently came on and the next morning it became hard starting. Once it runs, it seems to run fine. Checking by mating the two black diagnostics plugs, the ECU flashes code 21, which - according to all posts - is the coolant temperature sensor.
I did find that the left fan connector was off (probably due to 'service' having done). Replugged it, but the condition still exists. The fans also immediately come on.
Could anyone tell me where this sensor is located?
Thanks! Remco