How much amperage can an alternator support? no really...

Louis-Alain Richard larichard at
Mon Feb 4 13:14:43 PST 2008

The radiator fan might not come on much as long as you are in motion.
Huw Powell

Don't assume that. When I was ice lapping in the urQ, even in motion, the
rad fan was almost always ON. That's because the numerous usage of the right
pedal produce a lot more heat than speed, the car is always spinning the 4
wheels. It's very hot inside the car too, from the floor and from the
So Vittorio made a wise decision by running a dedicated switch for the fan.
The OEM rad fan switch is not designed to flow current for a long period.
Relaying it would be another solution.


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