Quote:
Originally Posted by cudaspaz
Check the sensor connections for oil contamination and clean them with brake kleen or electrical contact cleaner(same ingredients).
Check the radiator for cold spots when hot.
The stat is probably the cause.
The fan viscous could be weak, but start with the stat first.
Alot of times the stat will cause this problem.
Also replace the filler cap on the expansion(coolant )tank.
Use MB coolant and mix it 50/50.
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I basically change out the whole cooling system after i got the vehicle. I changed out the thermostat, water pump, new viscous fan clutch, radiator cap, and new 50/50 MB coolant. still getting the same problem. it reads fine when the car is not up to normal temp. however, once it is warm, it sometimes read above 120C for a while, then all of a sudden dive back to normal. it just bother me to death when i am driving at over 120C and think the car will throw a rod anytime.
Where is the coolant temp sensor for the instrument panel?