Fan won't shut off

thierry75 · thierry75's Garage

The right side fan (facing the car) won't shut off even with the key off the ignition. I had to unplug the battery. What is it this time?!

bearone2 · 09-22-2005, 12:46 PM

the thermal switch on the driver side of the upper part of the radiator is probably bad but it could be the relay.

a pretty good troubleshooting article at www.clarks-garage.com.

thierry75 · thierry75's Garage

Thanks dude

bryanthompson · bryanthompson's Garage

It's easy to test that relay, so don't go out and buy one right away. It's probably the switch, which is easy & cheap.

jetmax · 09-23-2005, 12:56 PM

The switch is easy. I got the part from Pelican and put it on by jacking the car up, removing the lower belly pan, then disconnecting and lowering the fans. That gave me enough room to reach the switch from below. Make sure you drain the coolant below the switch level before removing.

thierry75 · thierry75's Garage

Thanks guys! I'll keep you posted

Tapage · Tapage's Garage

I vote for a termo switch .. get one ( are chaep ) to replace ..

thierry75 · thierry75's Garage

So strangely enough, when I reconnected the battery yesterday, the fans work properly and everything seems to be back to normal.(?!) I swear this car is like having a *****y demanding mistress. still wouldn't get rid of it for the world though

bearone2 · 09-24-2005, 05:24 PM

Quote:

Originally posted by thierry75
So strangely enough, when I reconnected the battery yesterday, the fans work properly and everything seems to be back to normal.(?!) I swear this car is like having a *****y demanding mistress. still wouldn't get rid of it for the world though

it's magic.

when/if you change out the switch, some do it from the top, i had the car on ramps and didn't remove the fans.

see where the water level is in the expansion tank.

you'll get wet but it'll only come down to the bottom of the switch and when you get the gasket/switch in, all you need to do is fill to the same level and you may not have to burp/bleed the system.

there are 2 thermostats, lo/hi and there are 2 switches, lo/hi so both should be the same to get the lower temps around the 1st line.

87951

carsonmx114 · 09-24-2005, 06:24 PM

unplug the big silver relay in the fuse box. the relay is probably sticking. is the relay clicks when you unplug it and plug it back in the thermo switch is bad. if the relay doesn't click but the fan goes off the contacts in the relay are stuck. when the relay cools off it is probably unsticking itself. also you could try tapping it with a screwdriver handle while the fan's running.