After doing a little studying in the service manual, Andy is right in what
he says, not that I didn't believe you Andy, just verifying that we were all
on the same page.
That middle knob, the one with the "OFF" position. In the
1st detent position Recir Compressor may cycle Only air in passenger
compartment is passed
through evaporator.
2nd detent A/C on Compressor may cycle Both air from outside as well as
passenger
compartment is passed through evaporator.
3rd detent Bi-level Compressor may cycle Both air from outside as well as
passenger
compartment is passed through evaporator.
4th detent Face Vent No compressor Fresh air from outside comes out the
face vents.
5th detent Feet Vent No compressor Fresh air from outside comes out the
feet vents.
6th detent Feet Vent Compressor may cycle Fresh air from outside comes out
the feet vents
Defrost and defrost vents.
7th detent Defrost Compressor may cycle Fresh air form outside comes out
the defrost
vents.
In the first three detent positions the compressor will not engage if the
ambient temperature is below 30ºF.
In any of the compressor cycle positions, if the compressor cycles more than
ten times a minute, you have a low-refrigerant condition and should get your
system checked and re-charged as soon as possible.
Ron
00 PB SLT QC 4X2 5.9 46RE 3.92 LSD
For modifications see my DML Profile (URL follows)
http://www.twistedbits.net/WWWProfile/dakota/Kw9pV1EkFeOYY
-----Original Message-----
From: owner-dakota-truck@BUFFNET.NET
[mailto:owner-dakota-truck@BUFFNET.NET]On Behalf Of Andy Levy
Sent: Tuesday, March 06, 2001 10:46 AM
To: dakota-truck-moderator@bent.twistedbits.net
Subject: Re: DML: AC compressor kicking on and off
Because the bi-level is really A/C BUT it is not labeled as such (Jack
Hilton
posted that there is a TSB on this). The center knob controls which
accessories
are used - just the fan, fan and A/C, etc. and where the air is put out
(feet,
dash, both, defrost). The bottom knob only controls where the air goes
before
it pumps through the vents - set it to full cold, and no air goes through
the
heater core. Set it to full hot, all air goes through the heater core. Set
it
in the middle, half goes each way and is then brought back together.
Kenneth Eng wrote:
> Shouldn't the foot and dash setting (bi-level setting) use just the vents
on
> the front of the dashboard and the vents in the footwell? This setting is
> different then the ones that are actually marked with a windshield defrost
> symbol (the settings on the far right). I think there are 2 defrost
> settings for the middle knob. One for the windshield only and one for
> windshield and footwell. I realize that the AC would come on for the
> defrost setting but why would the AC come on in the bi-level setting with
> the temp setting set for maximum heat?
>
> Ken
>
> -----Original Message-----
> From: A. S. [mailto:adakota4x4@hotmail.com]
> Sent: Tuesday, March 06, 2001 12:16 PM
> To: dakota-truck@buffnet.net
> Subject: Re: DML: AC compressor kicking on and off
>
> Yep, any setting that has anything to do with the defroster will kick the
> a/c on...no matter where the temp setting is. Most vehicles are this way.
> Even my 95, which has a button to activate the a/c, does this. The button
> can be in the a/c off position, temp setting to the hottest possible, but
if
>
> I hit the defrost button, the a/c comes on.
> --Aaron--
> 95 DSRC 4x4 V6
> www.geocities.com/adakota4x4_95/
>
> >If you're talking about the "foot and dash vent" on the right side of
> >the middle know, that activates the defroster which uses the a/c to
> >dry the air before blowing it on the windshield.
> >
> >97 V6 Auto
> >e-mail mcrumley@airmail.net
> >
> >"In the beginning the Universe was created. This has made
> >a lot of people very angry and been widely regarded as a
> >bad move."--Douglas Adams
>
> _________________________________________________________________
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