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Date: Tue, 05 Sep 2000 11:00:07 -0400 (EDT)
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Subject: superduty-list Digest V2000 #20
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superduty-list Digest Mon, 04 Sep 2000 Volume: 2000  Issue: 020

In This Issue:
Airconditioner Trouble
Re: Airconditioner Trouble
Re: Airconditioner Trouble

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Date: Mon, 04 Sep 2000 23:15:46 -0400
From: Don Francis nc.rr.com>
Subject: Airconditioner Trouble

I've got a 2000 model F350 CC, DRW, 4x4, LWB, PSD, Lariat that has a
quirk.  Every time I put the vehicle in 4x4 and either go up or down an
incline greater than 10 degrees with my airconditioner on and blower on
it will automatically start venting to the defrost (windshield) and
remain stuck there for several days - no matter which setting I have the
knob set to.  It will actually shutter sometimes like a giant valve in
the airhandler is flapping back and forth to only finally stick on the
defrost vent - even though I have it set to dash.  Has anyone else had
or seen this problem?  It's quite the pain in the butt!  I'm afraid that

every time I decide to take it to the dealership to get it un-stuck, I
get up and find that it has freed itself and is back to operating like
it's supposed to.

Suggestions?  Are there any TSB's on this?

Thanks!

Don


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From: "Neil Plocek" jps.net>
Subject: Re: Airconditioner Trouble
Date: Mon, 4 Sep 2000 20:43:28 -0700

Sounds like you may have a vacuum leak in your hubs(assuming you have auto
lock hubs).  Next time it happens, pop the hood and see it the vacuum pump
is running continuously.


----- Original Message -----
From: "Don Francis" nc.rr.com>
To: ford-trucks.com>
Sent: Monday, September 04, 2000 8:15 PM
Subject: [superduty-list] Airconditioner Trouble


> I've got a 2000 model F350 CC, DRW, 4x4, LWB, PSD, Lariat that has a
> quirk.  Every time I put the vehicle in 4x4 and either go up or down an
> incline greater than 10 degrees with my airconditioner on and blower on
> it will automatically start venting to the defrost (windshield) and
> remain stuck there for several days - no matter which setting I have the
> knob set to.  It will actually shutter sometimes like a giant valve in
> the airhandler is flapping back and forth to only finally stick on the
> defrost vent - even though I have it set to dash.  Has anyone else had
> or seen this problem?  It's quite the pain in the butt!  I'm afraid that
> every time I decide to take it to the dealership to get it un-stuck, I
> get up and find that it has freed itself and is back to operating like
> it's supposed to.
>
> Suggestions?  Are there any TSB's on this?
>
> Thanks!
>
> Don
>
> ==========================================================
> To unsubscribe:
> http://www.ford-trucks.com/mailinglist.html#item3
> Please remove this footer when replying.
>
>


------------------------------

Date: Tue, 05 Sep 2000 11:57:24 -0400
From: Jean Marc Chartier sympatico.ca>
Subject: Re: Airconditioner Trouble

Don Francis wrote:
>
> I've got a 2000 model F350 CC, DRW, 4x4, LWB, PSD, Lariat that has a
> quirk.  Every time I put the vehicle in 4x4 and either go up or down an
> incline greater than 10 degrees with my airconditioner on and blower on
> it will automatically start venting to the defrost (windshield) and
> remain stuck there for several days - no matter which setting I have the
> knob set to.  It will actually shutter sometimes like a giant valve in
> the airhandler is flapping back and forth to only finally stick on the
> defrost vent - even though I have it set to dash.  Has anyone else had
> or seen this problem?  It's quite the pain in the butt!  I'm afraid that
> every time I decide to take it to the dealership to get it un-stuck, I
> get up and find that it has freed itself and is back to operating like
> it's supposed to.
>
> Suggestions?  Are there any TSB's on this?
>
> Thanks!
>
> Don
>
> ==========================================================
> To unsubscribe:
> http://www.ford-trucks.com/mailinglist.html#item3
> Please remove this footer when replying.

Don,

The F-150 and I suspect the SuperDuty have a default
setting of Defrost when there is a vacuum leak.  As your
front axle uses engine Vacuum to engage, there could be a
leak in the system or some kind of defect/fault that causes
a low vacuum situation.  Next time you go to your dealer
engage the 4x4 to trigger the leak.

Regards

Jean Marc Chartier

------------------------------

End of superduty-list Digest V2000 #20
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