temperature high!!!!!!

[prnnts]

my mates got a problem>> when he is drivin the car temp goes high but the car aint overheating.....coolant is full..fans workin so we cant see were prob is comin from...help!!!!

 

[Fast Guy]

How high? Are the fans coming on when it goes high? How do you know it isn't over heating?

Possibly a faulty sender unit.

If it is over heating it could be the water pump, faulty thermostat or an air lock if the system has been disturbed recently.