cooling fan problem

chris92svxlsl · #1 04-22-2006, 02:48 PM

hi, my cooling fans wont come on. i checked the relay, and its good also checked wiring with a multimeter and voltage looks good. Is there a sensor to engage the fans, thats maybe bad, if so where is it located, and does anyone have any wiring schematics of the svx?

triumph1902 · #2 04-22-2006, 02:56 PM

see if this helps.. http://www.subaru-svx.net/photos/files/Beav/7752.gif

chris92svxlsl · #3 04-22-2006, 03:09 PM

thanks.. you think it could be that sensor or could it be a big problem

dannmarr · #4 04-22-2006, 08:20 PM

I don't know about the SVX, but on my Dodge the temperature sensor was the problem for the fan not working. If you run out of ideas, you can temporarily install a manual switch to engage the fan when needed.

Trevor · #5 04-22-2006, 08:50 PM

Quote:

Originally Posted by chris92svxlsl

hi, my cooling fans wont come on. i checked the relay, and its good also checked wiring with a multimeter and voltage looks good. Is there a sensor to engage the fans, thats maybe bad, if so where is it located, and does anyone have any wiring schematics of the svx?

When you say, "my cooling fans won't come on", do you mean that they do not operate when they SHOULD? Under normal conditions the fans do not run very often.
Are you concerned that they do not operate, even when the engine temperature reads as being very high and they should be running?
Does a fan run when the air conditioning is operating?

chris92svxlsl · #6 04-23-2006, 09:16 AM

Quote:

Originally Posted by Trevor

When you say, "my cooling fans won't come on", do you mean that they do not operate when they SHOULD? Under normal conditions the fans do not run very often.
Are you concerned that they do not operate, even when the engine temperature reads as being very high and they should be running?
Does a fan run when the air conditioning is operating?

the fans dont come on at all, i let the car idle for about an hour then it will start to overheat, (radiator is good), and the fans dont engage at all. so they should come on when engine temp rises, correct?

Trevor · #7 04-23-2006, 04:21 PM

Quote:

Originally Posted by chris92svxlsl

the fans dont come on at all, i let the car idle for about an hour then it will start to overheat, (radiator is good), and the fans dont engage at all. so they should come on when engine temp rises, correct?

Yes the fans should run. The circuitry is quite complicated involving the air conditioning system and the fans run at more than one speed. Therefore it is difficuly to advise someone without experience how to test them as units.

It is a very good bet that the water temperature sensor is faulty. Replace it and fingers crossed.

chris92svxlsl · #8 04-24-2006, 04:31 PM

this would be the same sensor that is linked to the relay that kicks on the fan, which the wiring leads to? thanks for the help

spinn360 · #9 04-24-2006, 04:55 PM

check to see if the a/c fuse in the engine bay fuse box is in, and not blown. Just a guess but easy to check. I think the power goes thru it to the fans. I emphasize on the word think. But if nothing else you can run a wire from there to power the driverside fan all the time while cars ignition is on.