[DeTomaso] Before my fans wouldn't run... now they won't shut off!

Asa Jay Laughton asajay at asajay.com
Wed Jun 9 18:05:25 EDT 2010


Might be the connections on the relay were mixed up too.  Download the  
diagrams and take a look.


Asa Jay

Quoting Larry - Ohio Time Corp <larry at ohiotimecorp.com>:

> Hi Charlie,
>
> SOBill is still on vacation (closer to you so have him drop by) so you are
> stuck with me.
>
> Turn the car off, fans running, and unplug the relay a bit. You should be at
> a point that you can wiggle it on and off. You want to see if you can feel
> the relays clicking.
>
> If they are clicking:
> - this is telling you that you have power (or maybe ground) switched to the
> really coil completing the circuit and keeping the fans on. I would first
> look to see if you have manual over ride switches as the problem may be
> there. I would also check the 12V+ wire to the really coil. (I like to
> switch the ground 12V- side, but you all know how I am)to make sure it is on
> a key switched supplied side, not a battery supplied side. Pull one fuse at
> a time till they stop to know that at least that is the supply. It may be as
> simple as the wire is on the wrong fuse spade.
>
> If they are not clicking:
> - this is telling you the problem is most likely in the relay. Shorted or
> burned up contacts that are welded together. Clean them or replace them.
>
> Larry - Cleveland
>
>
>
> -----Original Message-----
> From: detomaso-bounces at realbig.com [mailto:detomaso-bounces at realbig.com] On
> Behalf Of Charles McCall
> Sent: Wednesday, June 09, 2010 4:54 PM
> To: DetomasoList
> Subject: [DeTomaso] Before my fans wouldn't run... now they won't shut off!
>
> Hi all
>
> I'm happy because I smell like DeTomaso. There's a certain smell from being
> around the exhaust... if you carry clothes in your trunk, you know what I
> mean.
>
> Tonight they installed the radiator and suspension on my car, and tomorrow I
> drive the eight hours back home. We have a small snag.
>
> Before, my fans wouldn't run. When my sensors died a while back, we jumpered
> them so that they would run all the time. I haven't gotten around to
> changing the sending units, so they still ran all the time.
>
> The problem turned out to be a wire that got nicked while pulling the
> radiator. Easily enough fixed. But now they don't shut off when turning the
> ignition off and removing the key!
>
> What could be possible causes? I have a late-model car, with the Rick
> Moseley kit installed with relays in the front trunk.
>
> To get home tomorrow, I'll take the car as-is (I've run out of time to do
> anything else) and will simply pull the jumper wires off when I stop for gas
> and to eat. Where should I look to find out why the fans operate whether the
> ignition is on or not? Any ideas?
>
> Thanks! Tomorrow - road trip! 8 hours in the rain in my brand new, shiny
> car. Hopefully it will just be brand new and dirty when I arrive.
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