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.
>
>
>
>
>
> "Snow" <snowbal@sympatico.ca> wrote in message
> news:7Z_Ze.1869$cq2.362273@news20.bellglobal.com.. .
>
>> Thanks Gents, I'll try some of these things on the way to work
>> tonight. Think I need to ascertain first if the ac is actually turning
>> on when set to defrost like it should.. We'll see what happens.
>>
>> Snow...
>>
>>
>

 

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 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 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.

 

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.

 

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.

 

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.

 

Okay, but if that feature is broken/defeated, but the AC can be manually
turned on, then manually turn it on and get on with life.

I can see where somebody might not know that turning the AC on in Defrost
will remove fog on the inside of the glass, but searching for a service
center to fix it when the AC has to be switched on manually is probably not
a good use of perfectly fine money or time. Personally, I prefer the AC to
NOT turn on automatically at any time. I like the air to be directed to
various locations inside my car without regard to what other life support
systems mught be engaged, or not engaged.



"Lon" <lon.stowell@comcast.net> wrote in message
news:ivadnb_Rsf9BYKTeRVn-qQ@comcast.com...
> 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.
>>
>>
>>
>>
>>
>> "Snow" <snowbal@sympatico.ca> wrote in message
>> news:7Z_Ze.1869$cq2.362273@news20.bellglobal.com.. .
>>
>>> Thanks Gents, I'll try some of these things on the way to work tonight.
>>> Think I need to ascertain first if the ac is actually turning on when
>>> set to defrost like it should.. We'll see what happens.
>>>
>>> Snow...
>>>
>>>
>>

 

Okay, but if that feature is broken/defeated, but the AC can be manually
turned on, then manually turn it on and get on with life.

I can see where somebody might not know that turning the AC on in Defrost
will remove fog on the inside of the glass, but searching for a service
center to fix it when the AC has to be switched on manually is probably not
a good use of perfectly fine money or time. Personally, I prefer the AC to
NOT turn on automatically at any time. I like the air to be directed to
various locations inside my car without regard to what other life support
systems mught be engaged, or not engaged.



"Lon" <lon.stowell@comcast.net> wrote in message
news:ivadnb_Rsf9BYKTeRVn-qQ@comcast.com...
> 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.
>>
>>
>>
>>
>>
>> "Snow" <snowbal@sympatico.ca> wrote in message
>> news:7Z_Ze.1869$cq2.362273@news20.bellglobal.com.. .
>>
>>> Thanks Gents, I'll try some of these things on the way to work tonight.
>>> Think I need to ascertain first if the ac is actually turning on when
>>> set to defrost like it should.. We'll see what happens.
>>>
>>> Snow...
>>>
>>>
>>

 

Okay, but if that feature is broken/defeated, but the AC can be manually
turned on, then manually turn it on and get on with life.

I can see where somebody might not know that turning the AC on in Defrost
will remove fog on the inside of the glass, but searching for a service
center to fix it when the AC has to be switched on manually is probably not
a good use of perfectly fine money or time. Personally, I prefer the AC to
NOT turn on automatically at any time. I like the air to be directed to
various locations inside my car without regard to what other life support
systems mught be engaged, or not engaged.



"Lon" <lon.stowell@comcast.net> wrote in message
news:ivadnb_Rsf9BYKTeRVn-qQ@comcast.com...
> 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.
>>
>>
>>
>>
>>
>> "Snow" <snowbal@sympatico.ca> wrote in message
>> news:7Z_Ze.1869$cq2.362273@news20.bellglobal.com.. .
>>
>>> Thanks Gents, I'll try some of these things on the way to work tonight.
>>> Think I need to ascertain first if the ac is actually turning on when
>>> set to defrost like it should.. We'll see what happens.
>>>
>>> Snow...
>>>
>>>
>>