"----" <LeadWinger> wrote in message
news:9tdlj1tu6d3jmsatpfnu7hdka8u3d6uhrk@4ax.com...
> OK. Here's the scoop. The A/C does NOT turn on in either the manual
> Defrost position or the Defrost/Floor position. It DOES turn on in
> the two right positions, Bi-Level and Panel. So the only way to have
> the A/C on in defrost mode is to push the A/C button. This is on a
> '93 JGC with the Automatic Temperature Control. Same as the OP. I
> have owned this Jeep since it was new.
>
> ----
>

I would accept that operation and not seek out repairs, regardless of what
the Owner's Manual says it should be doing. If I can set the Defrost, and
depress the AC switch and the AC comes on as a result, and blows onto the
glass, then I'm one happy guy.





> On Tue, 27 Sep 2005 21:22:38 -0700, ---- <LeadWinger> wrote:
>
>>The service manual does say that the compressor is on during
>>Floor/Defrost and Defrost modes, and when the A/C button is depressed.
>>However, the owner's manual states that putting the ATC in defrost
>>mode is full manual override, and that the A/C button must be
>>depressed to get cooling (it doesn't say you have to depress it in
>>defrost, but it doesn't say you don't need to either.) I am going to
>>try it tomorrow, and see if the compressor comes on in manual defrost
>>mode.
>>
>>----
>>
>>On Tue, 27 Sep 2005 19:20:10 -0700, Lon <lon.stowell@comcast.net>
>>wrote:
>>
>>> It isn't debatable on the ZJ, particularly with the ATC. Is noted in
>>> the owners and factory service manual as that is the way it works.
>>>
>>> I honestly don't know of any modern car with A/C that doesn't turn on
>>> the AC with the defroster, but that doesn't mean you are totally
>>> incorrect.
>>>
>>>Jeff Strickland proclaimed:
>>>> "Like it should" is debatable. None of the cars that I currently own
>>>> switch the AC on with the Defroster. The defroster is really just a
>>>> selection of which vent holes you want the air to blow out of. Sure,
>>>> some cars will switch the AC on if defrost is set, but this is not a
>>>> requirement, and just because the AC does not come on by itself doesn't
>>>> necessarily point to a problem. If you can set the defrost and turn the
>>>> AC on at the same time, then you have what you were meant to have, or
>>>> you have something that can work, and gives you options of where the
>>>> air
>>>> should blow from whether or not the AC is on.
>

 

"----" <LeadWinger> wrote in message
news:9tdlj1tu6d3jmsatpfnu7hdka8u3d6uhrk@4ax.com...
> OK. Here's the scoop. The A/C does NOT turn on in either the manual
> Defrost position or the Defrost/Floor position. It DOES turn on in
> the two right positions, Bi-Level and Panel. So the only way to have
> the A/C on in defrost mode is to push the A/C button. This is on a
> '93 JGC with the Automatic Temperature Control. Same as the OP. I
> have owned this Jeep since it was new.
>
> ----
>

I would accept that operation and not seek out repairs, regardless of what
the Owner's Manual says it should be doing. If I can set the Defrost, and
depress the AC switch and the AC comes on as a result, and blows onto the
glass, then I'm one happy guy.





> On Tue, 27 Sep 2005 21:22:38 -0700, ---- <LeadWinger> wrote:
>
>>The service manual does say that the compressor is on during
>>Floor/Defrost and Defrost modes, and when the A/C button is depressed.
>>However, the owner's manual states that putting the ATC in defrost
>>mode is full manual override, and that the A/C button must be
>>depressed to get cooling (it doesn't say you have to depress it in
>>defrost, but it doesn't say you don't need to either.) I am going to
>>try it tomorrow, and see if the compressor comes on in manual defrost
>>mode.
>>
>>----
>>
>>On Tue, 27 Sep 2005 19:20:10 -0700, Lon <lon.stowell@comcast.net>
>>wrote:
>>
>>> It isn't debatable on the ZJ, particularly with the ATC. Is noted in
>>> the owners and factory service manual as that is the way it works.
>>>
>>> I honestly don't know of any modern car with A/C that doesn't turn on
>>> the AC with the defroster, but that doesn't mean you are totally
>>> incorrect.
>>>
>>>Jeff Strickland proclaimed:
>>>> "Like it should" is debatable. None of the cars that I currently own
>>>> switch the AC on with the Defroster. The defroster is really just a
>>>> selection of which vent holes you want the air to blow out of. Sure,
>>>> some cars will switch the AC on if defrost is set, but this is not a
>>>> requirement, and just because the AC does not come on by itself doesn't
>>>> necessarily point to a problem. If you can set the defrost and turn the
>>>> AC on at the same time, then you have what you were meant to have, or
>>>> you have something that can work, and gives you options of where the
>>>> air
>>>> should blow from whether or not the AC is on.
>

 

"----" <LeadWinger> wrote in message
news:9tdlj1tu6d3jmsatpfnu7hdka8u3d6uhrk@4ax.com...
> OK. Here's the scoop. The A/C does NOT turn on in either the manual
> Defrost position or the Defrost/Floor position. It DOES turn on in
> the two right positions, Bi-Level and Panel. So the only way to have
> the A/C on in defrost mode is to push the A/C button. This is on a
> '93 JGC with the Automatic Temperature Control. Same as the OP. I
> have owned this Jeep since it was new.
>
> ----
>

I would accept that operation and not seek out repairs, regardless of what
the Owner's Manual says it should be doing. If I can set the Defrost, and
depress the AC switch and the AC comes on as a result, and blows onto the
glass, then I'm one happy guy.





> On Tue, 27 Sep 2005 21:22:38 -0700, ---- <LeadWinger> wrote:
>
>>The service manual does say that the compressor is on during
>>Floor/Defrost and Defrost modes, and when the A/C button is depressed.
>>However, the owner's manual states that putting the ATC in defrost
>>mode is full manual override, and that the A/C button must be
>>depressed to get cooling (it doesn't say you have to depress it in
>>defrost, but it doesn't say you don't need to either.) I am going to
>>try it tomorrow, and see if the compressor comes on in manual defrost
>>mode.
>>
>>----
>>
>>On Tue, 27 Sep 2005 19:20:10 -0700, Lon <lon.stowell@comcast.net>
>>wrote:
>>
>>> It isn't debatable on the ZJ, particularly with the ATC. Is noted in
>>> the owners and factory service manual as that is the way it works.
>>>
>>> I honestly don't know of any modern car with A/C that doesn't turn on
>>> the AC with the defroster, but that doesn't mean you are totally
>>> incorrect.
>>>
>>>Jeff Strickland proclaimed:
>>>> "Like it should" is debatable. None of the cars that I currently own
>>>> switch the AC on with the Defroster. The defroster is really just a
>>>> selection of which vent holes you want the air to blow out of. Sure,
>>>> some cars will switch the AC on if defrost is set, but this is not a
>>>> requirement, and just because the AC does not come on by itself doesn't
>>>> necessarily point to a problem. If you can set the defrost and turn the
>>>> AC on at the same time, then you have what you were meant to have, or
>>>> you have something that can work, and gives you options of where the
>>>> air
>>>> should blow from whether or not the AC is on.
>

 

When all else fails:

I broke down and read my owners manual. The information was not the section
under Window Defroster as I expected but Window Defogging.
http://www.imagestation.com/album/pi...2309395&idx=48

Interestingly, under window defrosting is says:
"Note: To improve fuel economy, leave in defrost only when necessary."
http://www.imagestation.com/album/pi...2309395&idx=49

This implies something different is applying a load to the engine (like the
air conditioning) but as it states 4 pages later it is not the A/C.



http://www.imagestation.com/album/pi...2309395&idx=49

--
..
Billy_Ray@SPAM.fuse.net (remove SPAM)
2002 Jeep WJ 4 Liter Automatic
Sharing is why we are all here....... or should be.
..
"----" <LeadWinger> wrote in message
news:9tdlj1tu6d3jmsatpfnu7hdka8u3d6uhrk@4ax.com...
> OK. Here's the scoop. The A/C does NOT turn on in either the manual
> Defrost position or the Defrost/Floor position. It DOES turn on in
> the two right positions, Bi-Level and Panel. So the only way to have
> the A/C on in defrost mode is to push the A/C button. This is on a
> '93 JGC with the Automatic Temperature Control. Same as the OP. I
> have owned this Jeep since it was new.
>
> ----
>
> On Tue, 27 Sep 2005 21:22:38 -0700, ---- <LeadWinger> wrote:
>
>>The service manual does say that the compressor is on during
>>Floor/Defrost and Defrost modes, and when the A/C button is depressed.
>>However, the owner's manual states that putting the ATC in defrost
>>mode is full manual override, and that the A/C button must be
>>depressed to get cooling (it doesn't say you have to depress it in
>>defrost, but it doesn't say you don't need to either.) I am going to
>>try it tomorrow, and see if the compressor comes on in manual defrost
>>mode.
>>
>>----
>>
>>On Tue, 27 Sep 2005 19:20:10 -0700, Lon <lon.stowell@comcast.net>
>>wrote:
>>
>>> It isn't debatable on the ZJ, particularly with the ATC. Is noted in
>>> the owners and factory service manual as that is the way it works.
>>>
>>> I honestly don't know of any modern car with A/C that doesn't turn on
>>> the AC with the defroster, but that doesn't mean you are totally
>>> incorrect.
>>>
>>>Jeff Strickland proclaimed:
>>>> "Like it should" is debatable. None of the cars that I currently own
>>>> switch the AC on with the Defroster. The defroster is really just a
>>>> selection of which vent holes you want the air to blow out of. Sure,
>>>> some cars will switch the AC on if defrost is set, but this is not a
>>>> requirement, and just because the AC does not come on by itself doesn't
>>>> necessarily point to a problem. If you can set the defrost and turn the
>>>> AC on at the same time, then you have what you were meant to have, or
>>>> you have something that can work, and gives you options of where the
>>>> air
>>>> should blow from whether or not the AC is on.
>

 

When all else fails:

I broke down and read my owners manual. The information was not the section
under Window Defroster as I expected but Window Defogging.
http://www.imagestation.com/album/pi...2309395&idx=48

Interestingly, under window defrosting is says:
"Note: To improve fuel economy, leave in defrost only when necessary."
http://www.imagestation.com/album/pi...2309395&idx=49

This implies something different is applying a load to the engine (like the
air conditioning) but as it states 4 pages later it is not the A/C.



http://www.imagestation.com/album/pi...2309395&idx=49

--
..
Billy_Ray@SPAM.fuse.net (remove SPAM)
2002 Jeep WJ 4 Liter Automatic
Sharing is why we are all here....... or should be.
..
"----" <LeadWinger> wrote in message
news:9tdlj1tu6d3jmsatpfnu7hdka8u3d6uhrk@4ax.com...
> OK. Here's the scoop. The A/C does NOT turn on in either the manual
> Defrost position or the Defrost/Floor position. It DOES turn on in
> the two right positions, Bi-Level and Panel. So the only way to have
> the A/C on in defrost mode is to push the A/C button. This is on a
> '93 JGC with the Automatic Temperature Control. Same as the OP. I
> have owned this Jeep since it was new.
>
> ----
>
> On Tue, 27 Sep 2005 21:22:38 -0700, ---- <LeadWinger> wrote:
>
>>The service manual does say that the compressor is on during
>>Floor/Defrost and Defrost modes, and when the A/C button is depressed.
>>However, the owner's manual states that putting the ATC in defrost
>>mode is full manual override, and that the A/C button must be
>>depressed to get cooling (it doesn't say you have to depress it in
>>defrost, but it doesn't say you don't need to either.) I am going to
>>try it tomorrow, and see if the compressor comes on in manual defrost
>>mode.
>>
>>----
>>
>>On Tue, 27 Sep 2005 19:20:10 -0700, Lon <lon.stowell@comcast.net>
>>wrote:
>>
>>> It isn't debatable on the ZJ, particularly with the ATC. Is noted in
>>> the owners and factory service manual as that is the way it works.
>>>
>>> I honestly don't know of any modern car with A/C that doesn't turn on
>>> the AC with the defroster, but that doesn't mean you are totally
>>> incorrect.
>>>
>>>Jeff Strickland proclaimed:
>>>> "Like it should" is debatable. None of the cars that I currently own
>>>> switch the AC on with the Defroster. The defroster is really just a
>>>> selection of which vent holes you want the air to blow out of. Sure,
>>>> some cars will switch the AC on if defrost is set, but this is not a
>>>> requirement, and just because the AC does not come on by itself doesn't
>>>> necessarily point to a problem. If you can set the defrost and turn the
>>>> AC on at the same time, then you have what you were meant to have, or
>>>> you have something that can work, and gives you options of where the
>>>> air
>>>> should blow from whether or not the AC is on.
>

 

When all else fails:

I broke down and read my owners manual. The information was not the section
under Window Defroster as I expected but Window Defogging.
http://www.imagestation.com/album/pi...2309395&idx=48

Interestingly, under window defrosting is says:
"Note: To improve fuel economy, leave in defrost only when necessary."
http://www.imagestation.com/album/pi...2309395&idx=49

This implies something different is applying a load to the engine (like the
air conditioning) but as it states 4 pages later it is not the A/C.



http://www.imagestation.com/album/pi...2309395&idx=49

--
..
Billy_Ray@SPAM.fuse.net (remove SPAM)
2002 Jeep WJ 4 Liter Automatic
Sharing is why we are all here....... or should be.
..
"----" <LeadWinger> wrote in message
news:9tdlj1tu6d3jmsatpfnu7hdka8u3d6uhrk@4ax.com...
> OK. Here's the scoop. The A/C does NOT turn on in either the manual
> Defrost position or the Defrost/Floor position. It DOES turn on in
> the two right positions, Bi-Level and Panel. So the only way to have
> the A/C on in defrost mode is to push the A/C button. This is on a
> '93 JGC with the Automatic Temperature Control. Same as the OP. I
> have owned this Jeep since it was new.
>
> ----
>
> On Tue, 27 Sep 2005 21:22:38 -0700, ---- <LeadWinger> wrote:
>
>>The service manual does say that the compressor is on during
>>Floor/Defrost and Defrost modes, and when the A/C button is depressed.
>>However, the owner's manual states that putting the ATC in defrost
>>mode is full manual override, and that the A/C button must be
>>depressed to get cooling (it doesn't say you have to depress it in
>>defrost, but it doesn't say you don't need to either.) I am going to
>>try it tomorrow, and see if the compressor comes on in manual defrost
>>mode.
>>
>>----
>>
>>On Tue, 27 Sep 2005 19:20:10 -0700, Lon <lon.stowell@comcast.net>
>>wrote:
>>
>>> It isn't debatable on the ZJ, particularly with the ATC. Is noted in
>>> the owners and factory service manual as that is the way it works.
>>>
>>> I honestly don't know of any modern car with A/C that doesn't turn on
>>> the AC with the defroster, but that doesn't mean you are totally
>>> incorrect.
>>>
>>>Jeff Strickland proclaimed:
>>>> "Like it should" is debatable. None of the cars that I currently own
>>>> switch the AC on with the Defroster. The defroster is really just a
>>>> selection of which vent holes you want the air to blow out of. Sure,
>>>> some cars will switch the AC on if defrost is set, but this is not a
>>>> requirement, and just because the AC does not come on by itself doesn't
>>>> necessarily point to a problem. If you can set the defrost and turn the
>>>> AC on at the same time, then you have what you were meant to have, or
>>>> you have something that can work, and gives you options of where the
>>>> air
>>>> should blow from whether or not the AC is on.
>

 

The defogger turns on the AC for the condenser to dry out the air going
through. It does not 'turn on the AC' as you gents are taking about
from the way I understand it and have seen.

If you open the hood and watch while you have it in 'defrost' or 'defog'
mode, you will see the AC pump turn on. You will not get 'AC' or cold
air unless you request it.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

Billy Ray wrote:
>
> When all else fails:
>
> I broke down and read my owners manual. The information was not the section
> under Window Defroster as I expected but Window Defogging.
> http://www.imagestation.com/album/pi...2309395&idx=48
>
> Interestingly, under window defrosting is says:
> "Note: To improve fuel economy, leave in defrost only when necessary."
> http://www.imagestation.com/album/pi...2309395&idx=49
>
> This implies something different is applying a load to the engine (like the
> air conditioning) but as it states 4 pages later it is not the A/C.
>
> http://www.imagestation.com/album/pi...2309395&idx=49
>
> --
> .
> Billy_Ray@SPAM.fuse.net (remove SPAM)
> 2002 Jeep WJ 4 Liter Automatic
> Sharing is why we are all here....... or should be.
> .
> "----" <LeadWinger> wrote in message
> news:9tdlj1tu6d3jmsatpfnu7hdka8u3d6uhrk@4ax.com...
> > OK. Here's the scoop. The A/C does NOT turn on in either the manual
> > Defrost position or the Defrost/Floor position. It DOES turn on in
> > the two right positions, Bi-Level and Panel. So the only way to have
> > the A/C on in defrost mode is to push the A/C button. This is on a
> > '93 JGC with the Automatic Temperature Control. Same as the OP. I
> > have owned this Jeep since it was new.
> >
> > ----
> >
> > On Tue, 27 Sep 2005 21:22:38 -0700, ---- <LeadWinger> wrote:
> >
> >>The service manual does say that the compressor is on during
> >>Floor/Defrost and Defrost modes, and when the A/C button is depressed.
> >>However, the owner's manual states that putting the ATC in defrost
> >>mode is full manual override, and that the A/C button must be
> >>depressed to get cooling (it doesn't say you have to depress it in
> >>defrost, but it doesn't say you don't need to either.) I am going to
> >>try it tomorrow, and see if the compressor comes on in manual defrost
> >>mode.
> >>
> >>----
> >>
> >>On Tue, 27 Sep 2005 19:20:10 -0700, Lon <lon.stowell@comcast.net>
> >>wrote:
> >>
> >>> It isn't debatable on the ZJ, particularly with the ATC. Is noted in
> >>> the owners and factory service manual as that is the way it works.
> >>>
> >>> I honestly don't know of any modern car with A/C that doesn't turn on
> >>> the AC with the defroster, but that doesn't mean you are totally
> >>> incorrect.
> >>>
> >>>Jeff Strickland proclaimed:
> >>>> "Like it should" is debatable. None of the cars that I currently own
> >>>> switch the AC on with the Defroster. The defroster is really just a
> >>>> selection of which vent holes you want the air to blow out of. Sure,
> >>>> some cars will switch the AC on if defrost is set, but this is not a
> >>>> requirement, and just because the AC does not come on by itself doesn't
> >>>> necessarily point to a problem. If you can set the defrost and turn the
> >>>> AC on at the same time, then you have what you were meant to have, or
> >>>> you have something that can work, and gives you options of where the
> >>>> air
> >>>> should blow from whether or not the AC is on.
> >

 

The defogger turns on the AC for the condenser to dry out the air going
through. It does not 'turn on the AC' as you gents are taking about
from the way I understand it and have seen.

If you open the hood and watch while you have it in 'defrost' or 'defog'
mode, you will see the AC pump turn on. You will not get 'AC' or cold
air unless you request it.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

Billy Ray wrote:
>
> When all else fails:
>
> I broke down and read my owners manual. The information was not the section
> under Window Defroster as I expected but Window Defogging.
> http://www.imagestation.com/album/pi...2309395&idx=48
>
> Interestingly, under window defrosting is says:
> "Note: To improve fuel economy, leave in defrost only when necessary."
> http://www.imagestation.com/album/pi...2309395&idx=49
>
> This implies something different is applying a load to the engine (like the
> air conditioning) but as it states 4 pages later it is not the A/C.
>
> http://www.imagestation.com/album/pi...2309395&idx=49
>
> --
> .
> Billy_Ray@SPAM.fuse.net (remove SPAM)
> 2002 Jeep WJ 4 Liter Automatic
> Sharing is why we are all here....... or should be.
> .
> "----" <LeadWinger> wrote in message
> news:9tdlj1tu6d3jmsatpfnu7hdka8u3d6uhrk@4ax.com...
> > OK. Here's the scoop. The A/C does NOT turn on in either the manual
> > Defrost position or the Defrost/Floor position. It DOES turn on in
> > the two right positions, Bi-Level and Panel. So the only way to have
> > the A/C on in defrost mode is to push the A/C button. This is on a
> > '93 JGC with the Automatic Temperature Control. Same as the OP. I
> > have owned this Jeep since it was new.
> >
> > ----
> >
> > On Tue, 27 Sep 2005 21:22:38 -0700, ---- <LeadWinger> wrote:
> >
> >>The service manual does say that the compressor is on during
> >>Floor/Defrost and Defrost modes, and when the A/C button is depressed.
> >>However, the owner's manual states that putting the ATC in defrost
> >>mode is full manual override, and that the A/C button must be
> >>depressed to get cooling (it doesn't say you have to depress it in
> >>defrost, but it doesn't say you don't need to either.) I am going to
> >>try it tomorrow, and see if the compressor comes on in manual defrost
> >>mode.
> >>
> >>----
> >>
> >>On Tue, 27 Sep 2005 19:20:10 -0700, Lon <lon.stowell@comcast.net>
> >>wrote:
> >>
> >>> It isn't debatable on the ZJ, particularly with the ATC. Is noted in
> >>> the owners and factory service manual as that is the way it works.
> >>>
> >>> I honestly don't know of any modern car with A/C that doesn't turn on
> >>> the AC with the defroster, but that doesn't mean you are totally
> >>> incorrect.
> >>>
> >>>Jeff Strickland proclaimed:
> >>>> "Like it should" is debatable. None of the cars that I currently own
> >>>> switch the AC on with the Defroster. The defroster is really just a
> >>>> selection of which vent holes you want the air to blow out of. Sure,
> >>>> some cars will switch the AC on if defrost is set, but this is not a
> >>>> requirement, and just because the AC does not come on by itself doesn't
> >>>> necessarily point to a problem. If you can set the defrost and turn the
> >>>> AC on at the same time, then you have what you were meant to have, or
> >>>> you have something that can work, and gives you options of where the
> >>>> air
> >>>> should blow from whether or not the AC is on.
> >

 

The defogger turns on the AC for the condenser to dry out the air going
through. It does not 'turn on the AC' as you gents are taking about
from the way I understand it and have seen.

If you open the hood and watch while you have it in 'defrost' or 'defog'
mode, you will see the AC pump turn on. You will not get 'AC' or cold
air unless you request it.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

Billy Ray wrote:
>
> When all else fails:
>
> I broke down and read my owners manual. The information was not the section
> under Window Defroster as I expected but Window Defogging.
> http://www.imagestation.com/album/pi...2309395&idx=48
>
> Interestingly, under window defrosting is says:
> "Note: To improve fuel economy, leave in defrost only when necessary."
> http://www.imagestation.com/album/pi...2309395&idx=49
>
> This implies something different is applying a load to the engine (like the
> air conditioning) but as it states 4 pages later it is not the A/C.
>
> http://www.imagestation.com/album/pi...2309395&idx=49
>
> --
> .
> Billy_Ray@SPAM.fuse.net (remove SPAM)
> 2002 Jeep WJ 4 Liter Automatic
> Sharing is why we are all here....... or should be.
> .
> "----" <LeadWinger> wrote in message
> news:9tdlj1tu6d3jmsatpfnu7hdka8u3d6uhrk@4ax.com...
> > OK. Here's the scoop. The A/C does NOT turn on in either the manual
> > Defrost position or the Defrost/Floor position. It DOES turn on in
> > the two right positions, Bi-Level and Panel. So the only way to have
> > the A/C on in defrost mode is to push the A/C button. This is on a
> > '93 JGC with the Automatic Temperature Control. Same as the OP. I
> > have owned this Jeep since it was new.
> >
> > ----
> >
> > On Tue, 27 Sep 2005 21:22:38 -0700, ---- <LeadWinger> wrote:
> >
> >>The service manual does say that the compressor is on during
> >>Floor/Defrost and Defrost modes, and when the A/C button is depressed.
> >>However, the owner's manual states that putting the ATC in defrost
> >>mode is full manual override, and that the A/C button must be
> >>depressed to get cooling (it doesn't say you have to depress it in
> >>defrost, but it doesn't say you don't need to either.) I am going to
> >>try it tomorrow, and see if the compressor comes on in manual defrost
> >>mode.
> >>
> >>----
> >>
> >>On Tue, 27 Sep 2005 19:20:10 -0700, Lon <lon.stowell@comcast.net>
> >>wrote:
> >>
> >>> It isn't debatable on the ZJ, particularly with the ATC. Is noted in
> >>> the owners and factory service manual as that is the way it works.
> >>>
> >>> I honestly don't know of any modern car with A/C that doesn't turn on
> >>> the AC with the defroster, but that doesn't mean you are totally
> >>> incorrect.
> >>>
> >>>Jeff Strickland proclaimed:
> >>>> "Like it should" is debatable. None of the cars that I currently own
> >>>> switch the AC on with the Defroster. The defroster is really just a
> >>>> selection of which vent holes you want the air to blow out of. Sure,
> >>>> some cars will switch the AC on if defrost is set, but this is not a
> >>>> requirement, and just because the AC does not come on by itself doesn't
> >>>> necessarily point to a problem. If you can set the defrost and turn the
> >>>> AC on at the same time, then you have what you were meant to have, or
> >>>> you have something that can work, and gives you options of where the
> >>>> air
> >>>> should blow from whether or not the AC is on.
> >

 

---- did pass the time by typing:
> OK. Here's the scoop. The A/C does NOT turn on in either the manual
> Defrost position or the Defrost/Floor position. It DOES turn on in
> the two right positions, Bi-Level and Panel. So the only way to have
> the A/C on in defrost mode is to push the A/C button. This is on a
> '93 JGC with the Automatic Temperature Control. Same as the OP. I
> have owned this Jeep since it was new.


That is correct. The AC button on 93ZJ with autoAC works just like
the button does on my manual AC. You have to light the light to get
the compressor to kick in.

It might _might_ be programmable via the DRB-II scantool since it, the
computer, and the overhead console share the same buss. There are
no faceplate programming options, just tests.


--
-- DougW -- 93 ZJ 4.0 http://members.***.net/wilsond
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors
Banks Header - and BEER, in the fridge!