[Shotimes] Cooling Fan Problem - How to troubleshoot?

[Jason Hartberger]

wow... that's really wierd. if it gives you a 111 for the hard faults (all 
pass), *then* a 542, it means that the ground was bad at one time, but it 
isn't bad now. Honestly, i don't know what to make of that. If the fan 
doesn't come on at all during the KOEO test, but there's voltage going to 
the fan connector, that says to me 'bad fan motor' or 'seized fan bearing', 
but the fan starts right up when you turn it onto MAX A/C... weird weird 
weird. I would say there's an open somewhere that only happens once in a 
while. Try doing the wiggle test 
(http://www.dalidesign.com/hbook/eectest.html) and see if that turns 
anything up.

Jason

----- Original Message ----- 
From: "Dave Ulring" <dulring@yahoo.com>
To: "Jason Hartberger" <at3hartberger@mail.com>; <shotimes@autox.team.net>
Sent: Sunday, November 07, 2004 7:31 PM
Subject: Re: [Shotimes] Cooling Fan Problem - How to troubleshoot?


> Jason, All,
>
> I have finally gotten around to doing some testing on
> my SHO.  I have driven it a little on short trips
> making sure not to over heat.
>
> I unplugged the fan and started the car.  No voltage.
> I turned on the AC MAX and got voltage.  I plugged it
> back in and the fan started working.  I turned the AC
> off and the fan turned off.  Normal behavior at this
> point.  I turned the AC back on to see if it would
> spin up again and nothing.  Tried several more times,
> nothing.
>
> A KOEO test only produces a 111 and 542.  I will have
> to look into the secondary fuel pump circuit later,
> but for now, could that be related to normal fan
> operation?
>
> A KOER test does not spin up the fan and only produces
> a 111 when I turn the steering, brake, and goose
> properly.
>
> Ideas?
>
> Thanks,
>
> Dave
> 93 MTX
> --- Jason Hartberger <at3hartberger@mail.com> wrote:
>
>> Well, the easiest way to test the fan is to run the
>> KOEO test... if you
>> don't know how to work the paper clip trick, go out
>> and buy a cheap code
>> scanner for ford cars and run the KOEO test by the
>> directions in the book,
>> the fan should run at both speeds during the tests.
>> If they don't, the code
>> scanner will return codes for an inop fan.
>>
>> Jason
>>
>>
>> ----- Original Message ----- 
>> From: "Dave Ulring" <dulring@yahoo.com>
>> To: <shotimes@autox.team.net>
>> Sent: Saturday, September 25, 2004 12:29 AM
>> Subject: [Shotimes] Cooling Fan Problem - How to
>> troubleshoot?
>>
>>
>> > Hey,
>> >
>> > Had an issue yesterday where I got stuck in stop
>> and
>> > go traffic.  The engine temp kept rising, so I
>> pulled
>> > over and let it cool down a bit.  I then got back
>> on
>> > the highway and it cooled back down.  Once back
>> off
>> > the highway it started rising again and I noticed
>> my
>> > cooling fan was not kicking on.  I have checked
>> all
>> > obvious wiring and connections, any suggestions on
>> how
>> > to test the fan before dropping $80 for a new
>> motor?
>> >
>> > Thanks in advance,
>> >
>> > Dave
>> >
>> > 93 MTX - New oil free starter.
>> >
>> >
>> >
>> >
>> >
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>
>
>
>
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