Quote:
Originally Posted by greguw
I was told the fan "robs" between 3 to 5 hp and 2 mpg and also waterpump life could be a factor .
I have yet too the factory electric fan come on yet ...the one on the front ? Under what conditions should that come on .
Thanks guys
greg
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I find it impossible to believe that 3 to 5 hp is significant... except maybe on a 240 on an interstate. I also find that mileage figure difficult to believe. But maybe it's true.
The fan comes on when the air conditioning system calls for it, and when the temperature sensor in the engine calls for it.
AFAIK it doesn't come on unless the car gets too warm using just the mechanical fan. Isn't the switch-on point 105 degrees c or something?