why does the ratiator fan keep running when the car is off? it killed the battery 8 hours later.
Dec 23, 2008 at 7:52 AM
Repair Safety Notice:
This information is for general instructional purposes only. Vehicle repair can be dangerous.
Verify all information, follow manufacturer service procedures, use proper tools and safety equipment,
and consult a qualified repair shop when needed.
Advertisement
DOCHAGERTY
CAR REPAIR CONTRIBUTOR
9,603 POSTS
The auxiliary fan is controlled by a final stage unit that is basically a potted semi-conductor that controls the fan speed and it is possible that unit is shorted and will require replacement. I think the aux fan and the final stage are sold as a unit, but I am not sure as I am not on my home computer and do not hace access to my data base.