Quote:
Originally Posted by Q-Ball
I recall in previous years the fans coming on during start up. This is an M104 motor, is this not correct?
If i let the car idle currently in the florida heat, the temp will rise, and i have coolant bubling over in the tank. The high speed fans are not coming on at all, unless I unplug the sensor at the thermostat housing. After this occurred yesterday, as a test, i noticed the upper radiator hose had sucked in. To get air back in, I loosened the cap on the coolant tank.
Where is the coolant temperature sensor?
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The fans are supposed to come on at (around) 100C w/ the A/C "off". 107C is a bit high but I've seen a few cars that kick-in at the temp.
If it's a HOT day (90F) and you start the car w/ A/C "ON", the aux fans will come on when the pressure reaches around 14 bar or 206psi. For example, my fans come on at 15bar, apx 240psi. Check MENU#18 about in the middle of the section; the table shows the pressure and temperature kick points for an S car. Yours is similar except you don't have the number of stages (3) that the "S" has.
If the weather is cool, the fans will not come on even w/ A/C on if the pressure is not exceeded. Here in So Cal, my fans don't come at all even on an 80F day for normal driving until the PSI or TEMP is exceeded.
If you want to turn them on at a lower temp, check out my page and the "Cool Harness".
