Quote:
Originally Posted by Arthur Dalton
OK
The single pin is gauge sensor.
The 4 pin is the later sensor ..it has 2 independent sensors in a single case ..The high fan section is pins 2 [br/yl] and 3 [bu/gy], so that is where you bridge with a resistor for lower high fan cut-in.
All you are doing with the resistor across the sensor is throwing the thermistor inside that sensor out of calibration by adding another resistor accross it..that lowers it/s value at temp and fools the fan input circuit to coming on earlier [ lower cut-in temp]
Works cool and cost almost nothing............
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Great! I'll give it a try. I feel so stupid asking but... what size resistor? All I know about resistors is that they have some colour lines that mean the Ohms and tolerance?
Since I'm traveling to USA in a couple of days, I think I'll buy the fan clutch there (MB parts are about 3 to 5 times more expensive here!). In the meantime, I think hacking the system to turn the high fans at about 95-100 would be great.