Electric Fan blues

[140cilx]

My fan works, spins great w/ a quick touch to the poles of the battery, but I can't get power to it. Fuse is not blown, but I read in the manual there is a slow burn fuse in the wiring. I can't find it. Anyone tell me where it is, or is there a "this is the problem" fix with the fans after I've eliminated the fan motor is fine?

Thank you.

Also, I've had this car 1 month, 1 week (the '84 SVO), the foglights were working, now they don't. Switch still lights up. Wiring hasn't come disconnected. Any idea's? - I'm not a good electrical snafu fixer. Please point me in some directions to check.

[svobud]

more than likely - it's the RELAY. It's located under the Dash. They have a bad habit of burning.

[140cilx]

Bud,
I know where the relay is, can I by-pass it and just use a switch to turn it off/on?
-thank you

[svobud]

yes...I have a manual toggle switch on mine. And, it seems to be a popular modification.

[pegasus.v.o]

Yea 140 I to ran a toggle switch for fan.

Hey Bud would the fan control kit motion dynamics sells fix 140s problem? Dont know anything about it, but it is reasonably priced.

[mutant]

My fan sometimes works , sometimes does not. It worked fine last night, today during emissions inspection it did not. ( passed anyways)
Just where under the dash is the relay? Any other info that can help me locate it would be appreciated. Thanks,
Mutant.

[SVOeric]

well guys, I was just about to post a product review on a fan controler I picked up from SVPU. It is the coolest kit since sliced bread!!

Not only does the adjustable controler work very well, it has instructions on how to wire a switch into the controler, so that you can manually turn on the fan, with a switch too.

I put my controler in this weekend.

I let the engine run for about 45 minutes. I adjusted the fan to kick on when the needle on the gauge hit the left of the R in normal.

It workes perfectly.

I looked at the motion dynamics controler, but i didn't like the way the sensor mounts (a sensor pushed through the radiator)

It comes with everything you need to put it in, except the switch (which is optional BTW)

here is a pic I took. I am going to put wire loom on the wire that goes to the controler, and I will have to replace the green zip ties.

[140cilx]

Thanks for all the answer's and assistance. I'll jump on this - the first traffic jam could be catastrophic.

I sure like the 180' thermostat's though, runs nice and cool!

[GT350R]

To test to see if it is the relay, look at your intake. You will see a sensor that has only one wire with a "boot" type connector. It will be on the lower half of the intake on the underneth.

Pull the boot connector off and ground it out with the key turned on. If the fan turns on , it is the sensor.

The fan sensor is a "thermostatic switch". When it gets hot and reaches a set tempature, it ground out, thus causing a completed curcuit to the relay and sending power to the fan. Since the switch is just used to turn the relay on, it is not a high powered curcuit.

Often these sensors (switches really) go bad.

I have found that this connector fits perfectly on the screw for the distributor cap and snaps right onto it from underneth the dist. That has gotten me out of more than one traffic jam!

[mutant]

Well, I changed the fan relay, plugged in a spare fan and grounded the sensor wire. Still no fan. This sucks.....

[GT350R]

The only thing left to do in that case is to follow it all the way through its curcuit with a voltmeter and look for a break in the wire somewhere.

[140cilx]

GT350r,
that is some very good details. I'll check it out per your description. Thanks much!

[SVOeric]

I would just replace it with a aftermarket controler, then all you have to wory about is the wires from the fan connector, to the new fan controler.

These things are known to have problems, because the wiring isn't heavy enough to handle the voltage that goes through them.

IMO, they also kick the fan on too late anyway, this is why it is so hard to find a turbo head that isn't cracked.