I've got a 1990 Integra with a cooling fan problem that I can't figure out.
The fan will cycly on and off as normal when the car is running or when you turn on the ac along with the auxillary fan. When the car is off, maybe hours later, the fan with come on and proceed to discharge the battery.
I have replace the fan relay and the oil temp. switch. This made no difference.
It is also my understanding that the fan operates on a ground circuit making connection through the relay to ground.
If I can't find a solution is it possible to hard wire to an ignition controled fuse so the fan will only work when the ignition is on? Whay would the fan act like this?

Thanks,
parotpirat

 

Yes you can run it to the fuse box directly. I prefer this method. There should be some switched openings on your fuse box. Only thing is with running it this way is that your heat inside the car will not be as strong as normal. It will be a bit cooler. If you don't mind then go for it.

 

You should look into this thread, specifically my post in it :
https://www.honda-acura.net/forums/s...g+Control+Unit

The problem I was having was exactly the same as yours. The fan would stay on hours after I turned the car off and would eventually drain the battery. After replacing the Fan Timing Control Unit my problem went away.

 

IT'S ALIVE!!!!!! ALIIIIIVVE!!!!!

 

I was thinking about the fan timing control unit, but was unsure where it was. I'll try that and see what happens.
Thanks