Outer Limits 4x4 Board

Hey there - Needing help I am...

My Thermo fan has stopped working. It is wired to a switch and is not using the temp sender at all.

It is getting power all the way into the unit with the wiring but it is not working. The car did go swimming last weekend and stopped working from there on.

I thought they were a water proof unit (or water resistant to some extent)... There is nothing jamming it at the moment as it is free spinning.


Any ideas...

yeah its farked.......

Thanks Bazooked, Just what I didn't want to hear...

Oh well, time to pull the sucker apart then...

Is there a relay in the circuit somewhere? If so, that could be the problem. Is the earth side of the wiring OK too?

Meldge wrote:I thought they were a water proof unit (or water resistant to some extent)... There

Not at all...

it's probably damaged related to being soaked, but it's probably repairable if you can get the motor apart. will probably just need a good clean out.

I pulled mine apart when it stopped. Not sure why it happened but one of the brushes had gotten really hot and melted its surrounding casing. I just got to it with a file and cleaned up the housing and it has worked for 2 years like that. Mine is for the aircon condesor though so doesn't get as much use as a radiator fan.

If it has both +ve and -ve going into it and still doesn't work then pull it apart. There's not much too them and you've got nothing to lose

If the brush got hot it most likely wasn't making contact properly (ie some resistance in the contact). The resistance would cause heat to be generated in the brush.

murcod wrote:If the brush got hot it most likely wasn't making contact properly (ie some resistance in the contact). The resistance would cause heat to be generated in the brush.

There was dirt in there so perhaps it got in between the brush and the rotor.

Cool, thanks guys, going to have a play, I only have weekends free to work is I am all around the state during the week. Wanna get it ready for the Ormeau run this weekend.

Yes I tested positive and negative right through the wiring to the motor, there is no relay, hard wired to the battery with a switch to turn it on and off...

I will strip it down and clean it out, if no good - guess i'll have to buy another one then...

Meldge wrote:Cool, thanks guys, going to have a play, I only have weekends free to work is I am all around the state during the week.

Take the thermo with you. When I travelled the State with work I used to take these sorts of things with me to give me something to do in the down time

Not a bad idea actually, although too late this week, i want it for this weekend.

Once all back together (or buying a new one) would it be worth while giving it a good going over with some sort of silicone spray, or would that just help it heat up a little more. As the level of water really was not all that deep, (well it was but my car sits high)...

Just trying to water proof it in some way...