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Joined: Jun 10, 2008
Posts: 1
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(Msg. 1) Posted: Tue Jun 10, 2008 12:49 am
Post subject: 93' explorer keeps blowing heater fan/ac fuse
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| Hey everyone, new to this site and i got a problem i cant figure out..
i got a 93 ford explorer xlt, and latly the heater fan fuse keeps blowing, you can replace the fuse and it will sometimes instantly blow or will last for a minute or 2 with the fan on then blow again, the problem is the turn signal idicators are also on this circuit? and i loose those when the fuse blows, ive had to have the heater system completly off and the signals will last awhile but sometimes just blow the fuse again..
why is it doing this, ive been told its a short somewhere? i did replace the blower motor and its still blowing, what else should i replace before i have to take it to a shop to get the wiring check?
should i replace the heater fan resistor? (wher eis this located, is it hard to get at?)?, the interior switch panel? anything else, the relay? anything, need this fixed asap, thanks everyone!  |
>> Stay informed about: 93' explorer keeps blowing heater fan/ac fuse |
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External
Since: Jun 04, 2008
Posts: 3
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(Msg. 2) Posted: Sat Jun 21, 2008 2:23 pm
Post subject: Re: 93' explorer keeps blowing heater fan/ac fuse [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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I have the same model and year and yes I have had the heater go full blast.
It was the motor blower switch on the dashboard that had melted and shorted
internally.
I had this switch fail twice. First time it was same as you and I had to
get a new switch at a pick and pull, actually they sold me the whole heater
control panel for about $20. It actually came from a Ranger if I recall.
The second time it failed it would not work at some speeds. This time I
disassembled the switch and cleaned the contacts of some soot and it now
works. In that case the body of the switch was not as damaged by melting as
the first time.
Clearly there are some failure modes having to do with the switch so start
there. It should be obviously burned when you unplug the connector. It may
or may not be repairable. Its not too hard to get the dash off, start with
the ashtray, some of it is just snap fit in place.
"gbodyfever" <none.RemoveThis@000.com> wrote in message
news:1121170_9f19393386b69bf86fde005b7d0e91d8@autoforumz.com...
> Hey everyone, new here and i got a problem i cant figure out..
> i got a 93 ford explorer xlt, and latly the heater fan fuse keeps
> blowing, you can replace the fuse and it will sometimes instantly blow
> or will last for a minute or 2 with the fan on then blow again, the
> problem is the turn signal idicators are also on this circuit? and i
> loose those when the fuse blows, ive had to have the heater system
> completly off and the signals will last awhile but sometimes just blow
> the fuse again..
> why is it doing this, ive been told its a short somewhere? i did
> replace the blower motor and its still blowing, what else should i
> replace before i have to take it to a shop to get the wiring check?
> should i replace the heater fan resistor? (wher eis this located, is
> it hard to get at?)?, the interior switch panel? anything else, the
> relay? anything, need this fixed asap, thanks everyone!
>
> --
> Posted at author's request, using moderated http://www.AutoForumz.com
> interface
> Thread archive:
> http://www.AutoForumz.com/93-explorer-blowing-heater-fan-ac-fuse-ftopi...28863.h |
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External
Since: Jun 04, 2008
Posts: 3
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(Msg. 3) Posted: Sat Jun 21, 2008 2:23 pm
Post subject: Re: 93' explorer keeps blowing heater fan/ac fuse [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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Almost forgot The second failure also involved a burn out of a relay in the
power panel under the hood, heat damaged contacts broke away and went open.
It was a standard automotive relay, easy and cheap to find.
Pull the relay for the blower as marked on the lid of the power distribution
box (and in the manual) and inspect for heating damage as well as the
blower switch.
"pipedown" <pipedown.RemoveThis@mindspring.com> wrote in message
news:vb2dnYWy1_gj39LVnZ2dnUVZ_uydnZ2d@comcast.com...
>I have the same model and year and yes I have had the heater go full blast.
>It was the motor blower switch on the dashboard that had melted and shorted
>internally.
>
> I had this switch fail twice. First time it was same as you and I had to
> get a new switch at a pick and pull, actually they sold me the whole
> heater control panel for about $20. It actually came from a Ranger if I
> recall.
>
> The second time it failed it would not work at some speeds. This time I
> disassembled the switch and cleaned the contacts of some soot and it now
> works. In that case the body of the switch was not as damaged by melting
> as the first time.
>
> Clearly there are some failure modes having to do with the switch so start
> there. It should be obviously burned when you unplug the connector. It
> may or may not be repairable. Its not too hard to get the dash off, start
> with the ashtray, some of it is just snap fit in place.
>
>
>
> "gbodyfever" <none.RemoveThis@000.com> wrote in message
> news:1121170_9f19393386b69bf86fde005b7d0e91d8@autoforumz.com...
>> Hey everyone, new here and i got a problem i cant figure out..
>> i got a 93 ford explorer xlt, and latly the heater fan fuse keeps
>> blowing, you can replace the fuse and it will sometimes instantly blow
>> or will last for a minute or 2 with the fan on then blow again, the
>> problem is the turn signal idicators are also on this circuit? and i
>> loose those when the fuse blows, ive had to have the heater system
>> completly off and the signals will last awhile but sometimes just blow
>> the fuse again..
>> why is it doing this, ive been told its a short somewhere? i did
>> replace the blower motor and its still blowing, what else should i
>> replace before i have to take it to a shop to get the wiring check?
>> should i replace the heater fan resistor? (wher eis this located, is
>> it hard to get at?)?, the interior switch panel? anything else, the
>> relay? anything, need this fixed asap, thanks everyone!
>>
>> --
>> Posted at author's request, using moderated http://www.AutoForumz.com
>> interface
>> Thread archive:
>> http://www.AutoForumz.com/93-explorer-blowing-heater-fan-ac-fuse-ftopi...28863.h
>
> >> Stay informed about: 93' explorer keeps blowing heater fan/ac fuse |
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