'02 A6 AC stopped working
#21
Guest
Posts: n/a
Re: '02 A6 AC stopped working
5potnoodle wrote:
>
> If your AC has a display, you will be able to pull the fault codes
> from it by pressing a combination of buttons. Unfortunately, I don't
> know what these will be for your model but a search on the internet
> might help you.
I found these codes but they are for '90 model and may not be the same for
my car.
http://www.audifans.com/twiki/bin/vi...iagnosticCodes
Jone
>
> If your AC has a display, you will be able to pull the fault codes
> from it by pressing a combination of buttons. Unfortunately, I don't
> know what these will be for your model but a search on the internet
> might help you.
I found these codes but they are for '90 model and may not be the same for
my car.
http://www.audifans.com/twiki/bin/vi...iagnosticCodes
Jone
#22
Guest
Posts: n/a
Re: '02 A6 AC stopped working
Steve Sears wrote:
>> Chances are, if you turn the system full cold and you don't hear the
> occasional click of the clutch engaging on the compressor, and with
> the engine off you can turn the compressor by hand (you can do it so
> long as the clutch isn't welded to the pulley) will indicate that the
> AC has probably lost enough pressure to activate the LP switch. If
> you can find the location of the switch - it's a wired pressure
> transducer teed into an AC line - and bypass it (for a short time to
> avoid burnout) to make the clutch engage and run the system, then the
> system has lost some pressure.
Thanks, Ill give it a try tomorrow. I also noticed today that the electric
radiator fan is running even though the car is cold. It should not do that
should it? If some faulty sensor tells the computer the engine is hot, could
it turn of the AC in an effort to keep the engine cold?
Jone
>> Chances are, if you turn the system full cold and you don't hear the
> occasional click of the clutch engaging on the compressor, and with
> the engine off you can turn the compressor by hand (you can do it so
> long as the clutch isn't welded to the pulley) will indicate that the
> AC has probably lost enough pressure to activate the LP switch. If
> you can find the location of the switch - it's a wired pressure
> transducer teed into an AC line - and bypass it (for a short time to
> avoid burnout) to make the clutch engage and run the system, then the
> system has lost some pressure.
Thanks, Ill give it a try tomorrow. I also noticed today that the electric
radiator fan is running even though the car is cold. It should not do that
should it? If some faulty sensor tells the computer the engine is hot, could
it turn of the AC in an effort to keep the engine cold?
Jone
#23
Guest
Posts: n/a
Re: '02 A6 AC stopped working
Steve Sears wrote:
>> Chances are, if you turn the system full cold and you don't hear the
> occasional click of the clutch engaging on the compressor, and with
> the engine off you can turn the compressor by hand (you can do it so
> long as the clutch isn't welded to the pulley) will indicate that the
> AC has probably lost enough pressure to activate the LP switch. If
> you can find the location of the switch - it's a wired pressure
> transducer teed into an AC line - and bypass it (for a short time to
> avoid burnout) to make the clutch engage and run the system, then the
> system has lost some pressure.
Thanks, Ill give it a try tomorrow. I also noticed today that the electric
radiator fan is running even though the car is cold. It should not do that
should it? If some faulty sensor tells the computer the engine is hot, could
it turn of the AC in an effort to keep the engine cold?
Jone
>> Chances are, if you turn the system full cold and you don't hear the
> occasional click of the clutch engaging on the compressor, and with
> the engine off you can turn the compressor by hand (you can do it so
> long as the clutch isn't welded to the pulley) will indicate that the
> AC has probably lost enough pressure to activate the LP switch. If
> you can find the location of the switch - it's a wired pressure
> transducer teed into an AC line - and bypass it (for a short time to
> avoid burnout) to make the clutch engage and run the system, then the
> system has lost some pressure.
Thanks, Ill give it a try tomorrow. I also noticed today that the electric
radiator fan is running even though the car is cold. It should not do that
should it? If some faulty sensor tells the computer the engine is hot, could
it turn of the AC in an effort to keep the engine cold?
Jone
#24
Guest
Posts: n/a
Re: '02 A6 AC stopped working
Steve Sears wrote:
>> Chances are, if you turn the system full cold and you don't hear the
> occasional click of the clutch engaging on the compressor, and with
> the engine off you can turn the compressor by hand (you can do it so
> long as the clutch isn't welded to the pulley) will indicate that the
> AC has probably lost enough pressure to activate the LP switch. If
> you can find the location of the switch - it's a wired pressure
> transducer teed into an AC line - and bypass it (for a short time to
> avoid burnout) to make the clutch engage and run the system, then the
> system has lost some pressure.
Thanks, Ill give it a try tomorrow. I also noticed today that the electric
radiator fan is running even though the car is cold. It should not do that
should it? If some faulty sensor tells the computer the engine is hot, could
it turn of the AC in an effort to keep the engine cold?
Jone
>> Chances are, if you turn the system full cold and you don't hear the
> occasional click of the clutch engaging on the compressor, and with
> the engine off you can turn the compressor by hand (you can do it so
> long as the clutch isn't welded to the pulley) will indicate that the
> AC has probably lost enough pressure to activate the LP switch. If
> you can find the location of the switch - it's a wired pressure
> transducer teed into an AC line - and bypass it (for a short time to
> avoid burnout) to make the clutch engage and run the system, then the
> system has lost some pressure.
Thanks, Ill give it a try tomorrow. I also noticed today that the electric
radiator fan is running even though the car is cold. It should not do that
should it? If some faulty sensor tells the computer the engine is hot, could
it turn of the AC in an effort to keep the engine cold?
Jone
#25
Guest
Posts: n/a
Re: '02 A6 AC stopped working
Steve Sears wrote:
>> Chances are, if you turn the system full cold and you don't hear the
> occasional click of the clutch engaging on the compressor, and with
> the engine off you can turn the compressor by hand (you can do it so
> long as the clutch isn't welded to the pulley) will indicate that the
> AC has probably lost enough pressure to activate the LP switch. If
> you can find the location of the switch - it's a wired pressure
> transducer teed into an AC line - and bypass it (for a short time to
> avoid burnout) to make the clutch engage and run the system, then the
> system has lost some pressure.
Thanks, Ill give it a try tomorrow. I also noticed today that the electric
radiator fan is running even though the car is cold. It should not do that
should it? If some faulty sensor tells the computer the engine is hot, could
it turn of the AC in an effort to keep the engine cold?
Jone
>> Chances are, if you turn the system full cold and you don't hear the
> occasional click of the clutch engaging on the compressor, and with
> the engine off you can turn the compressor by hand (you can do it so
> long as the clutch isn't welded to the pulley) will indicate that the
> AC has probably lost enough pressure to activate the LP switch. If
> you can find the location of the switch - it's a wired pressure
> transducer teed into an AC line - and bypass it (for a short time to
> avoid burnout) to make the clutch engage and run the system, then the
> system has lost some pressure.
Thanks, Ill give it a try tomorrow. I also noticed today that the electric
radiator fan is running even though the car is cold. It should not do that
should it? If some faulty sensor tells the computer the engine is hot, could
it turn of the AC in an effort to keep the engine cold?
Jone
#26
Guest
Posts: n/a
Re: '02 A6 AC stopped working
On Sat, 09 Jul 2005 01:12:52 +0200, Jone Tytlandsvik <jone> wrote:
> Steve Sears wrote:
>>> Chances are, if you turn the system full cold and you don't hear the
>> occasional click of the clutch engaging on the compressor, and with
>> the engine off you can turn the compressor by hand (you can do it so
>> long as the clutch isn't welded to the pulley) will indicate that the
>> AC has probably lost enough pressure to activate the LP switch. If
>> you can find the location of the switch - it's a wired pressure
>> transducer teed into an AC line - and bypass it (for a short time to
>> avoid burnout) to make the clutch engage and run the system, then the
>> system has lost some pressure.
>
> Thanks, Ill give it a try tomorrow. I also noticed today that the
> electric
> radiator fan is running even though the car is cold. It should not do
> that
> should it? If some faulty sensor tells the computer the engine is hot,
> could
> it turn of the AC in an effort to keep the engine cold?
>
> Jone
>
>
The fan will run all the time the AC on ( * )display is shown on the
panel.. On our 97' model the fan ran although the LP switch had detected
low pressure and disengaged the compressor (clutch open).
So your problem most likely is a normal loss of refrigeration gas. Most
workshops will fill up the system for less than 2' NKR.. The prosedure
takes about an hour as it involves complete drainage, vacumtest and
refill..
The vacumtest however will not always detect small leakages. So if you
loose gas within a few weeks a check using tracing liquid and ultraviolet
light will be necessary. Got this for free, as I filled twice in a month..
had to change one line due to pittings under a plastic shrink fit hose at
a suspension point..
regards
ottar t
--
Using Opera's revolutionary e-mail client: http://www.opera.com/mail/
> Steve Sears wrote:
>>> Chances are, if you turn the system full cold and you don't hear the
>> occasional click of the clutch engaging on the compressor, and with
>> the engine off you can turn the compressor by hand (you can do it so
>> long as the clutch isn't welded to the pulley) will indicate that the
>> AC has probably lost enough pressure to activate the LP switch. If
>> you can find the location of the switch - it's a wired pressure
>> transducer teed into an AC line - and bypass it (for a short time to
>> avoid burnout) to make the clutch engage and run the system, then the
>> system has lost some pressure.
>
> Thanks, Ill give it a try tomorrow. I also noticed today that the
> electric
> radiator fan is running even though the car is cold. It should not do
> that
> should it? If some faulty sensor tells the computer the engine is hot,
> could
> it turn of the AC in an effort to keep the engine cold?
>
> Jone
>
>
The fan will run all the time the AC on ( * )display is shown on the
panel.. On our 97' model the fan ran although the LP switch had detected
low pressure and disengaged the compressor (clutch open).
So your problem most likely is a normal loss of refrigeration gas. Most
workshops will fill up the system for less than 2' NKR.. The prosedure
takes about an hour as it involves complete drainage, vacumtest and
refill..
The vacumtest however will not always detect small leakages. So if you
loose gas within a few weeks a check using tracing liquid and ultraviolet
light will be necessary. Got this for free, as I filled twice in a month..
had to change one line due to pittings under a plastic shrink fit hose at
a suspension point..
regards
ottar t
--
Using Opera's revolutionary e-mail client: http://www.opera.com/mail/
#27
Guest
Posts: n/a
Re: '02 A6 AC stopped working
On Sat, 09 Jul 2005 01:12:52 +0200, Jone Tytlandsvik <jone> wrote:
> Steve Sears wrote:
>>> Chances are, if you turn the system full cold and you don't hear the
>> occasional click of the clutch engaging on the compressor, and with
>> the engine off you can turn the compressor by hand (you can do it so
>> long as the clutch isn't welded to the pulley) will indicate that the
>> AC has probably lost enough pressure to activate the LP switch. If
>> you can find the location of the switch - it's a wired pressure
>> transducer teed into an AC line - and bypass it (for a short time to
>> avoid burnout) to make the clutch engage and run the system, then the
>> system has lost some pressure.
>
> Thanks, Ill give it a try tomorrow. I also noticed today that the
> electric
> radiator fan is running even though the car is cold. It should not do
> that
> should it? If some faulty sensor tells the computer the engine is hot,
> could
> it turn of the AC in an effort to keep the engine cold?
>
> Jone
>
>
The fan will run all the time the AC on ( * )display is shown on the
panel.. On our 97' model the fan ran although the LP switch had detected
low pressure and disengaged the compressor (clutch open).
So your problem most likely is a normal loss of refrigeration gas. Most
workshops will fill up the system for less than 2' NKR.. The prosedure
takes about an hour as it involves complete drainage, vacumtest and
refill..
The vacumtest however will not always detect small leakages. So if you
loose gas within a few weeks a check using tracing liquid and ultraviolet
light will be necessary. Got this for free, as I filled twice in a month..
had to change one line due to pittings under a plastic shrink fit hose at
a suspension point..
regards
ottar t
--
Using Opera's revolutionary e-mail client: http://www.opera.com/mail/
> Steve Sears wrote:
>>> Chances are, if you turn the system full cold and you don't hear the
>> occasional click of the clutch engaging on the compressor, and with
>> the engine off you can turn the compressor by hand (you can do it so
>> long as the clutch isn't welded to the pulley) will indicate that the
>> AC has probably lost enough pressure to activate the LP switch. If
>> you can find the location of the switch - it's a wired pressure
>> transducer teed into an AC line - and bypass it (for a short time to
>> avoid burnout) to make the clutch engage and run the system, then the
>> system has lost some pressure.
>
> Thanks, Ill give it a try tomorrow. I also noticed today that the
> electric
> radiator fan is running even though the car is cold. It should not do
> that
> should it? If some faulty sensor tells the computer the engine is hot,
> could
> it turn of the AC in an effort to keep the engine cold?
>
> Jone
>
>
The fan will run all the time the AC on ( * )display is shown on the
panel.. On our 97' model the fan ran although the LP switch had detected
low pressure and disengaged the compressor (clutch open).
So your problem most likely is a normal loss of refrigeration gas. Most
workshops will fill up the system for less than 2' NKR.. The prosedure
takes about an hour as it involves complete drainage, vacumtest and
refill..
The vacumtest however will not always detect small leakages. So if you
loose gas within a few weeks a check using tracing liquid and ultraviolet
light will be necessary. Got this for free, as I filled twice in a month..
had to change one line due to pittings under a plastic shrink fit hose at
a suspension point..
regards
ottar t
--
Using Opera's revolutionary e-mail client: http://www.opera.com/mail/
#28
Guest
Posts: n/a
Re: '02 A6 AC stopped working
On Sat, 09 Jul 2005 01:12:52 +0200, Jone Tytlandsvik <jone> wrote:
> Steve Sears wrote:
>>> Chances are, if you turn the system full cold and you don't hear the
>> occasional click of the clutch engaging on the compressor, and with
>> the engine off you can turn the compressor by hand (you can do it so
>> long as the clutch isn't welded to the pulley) will indicate that the
>> AC has probably lost enough pressure to activate the LP switch. If
>> you can find the location of the switch - it's a wired pressure
>> transducer teed into an AC line - and bypass it (for a short time to
>> avoid burnout) to make the clutch engage and run the system, then the
>> system has lost some pressure.
>
> Thanks, Ill give it a try tomorrow. I also noticed today that the
> electric
> radiator fan is running even though the car is cold. It should not do
> that
> should it? If some faulty sensor tells the computer the engine is hot,
> could
> it turn of the AC in an effort to keep the engine cold?
>
> Jone
>
>
The fan will run all the time the AC on ( * )display is shown on the
panel.. On our 97' model the fan ran although the LP switch had detected
low pressure and disengaged the compressor (clutch open).
So your problem most likely is a normal loss of refrigeration gas. Most
workshops will fill up the system for less than 2' NKR.. The prosedure
takes about an hour as it involves complete drainage, vacumtest and
refill..
The vacumtest however will not always detect small leakages. So if you
loose gas within a few weeks a check using tracing liquid and ultraviolet
light will be necessary. Got this for free, as I filled twice in a month..
had to change one line due to pittings under a plastic shrink fit hose at
a suspension point..
regards
ottar t
--
Using Opera's revolutionary e-mail client: http://www.opera.com/mail/
> Steve Sears wrote:
>>> Chances are, if you turn the system full cold and you don't hear the
>> occasional click of the clutch engaging on the compressor, and with
>> the engine off you can turn the compressor by hand (you can do it so
>> long as the clutch isn't welded to the pulley) will indicate that the
>> AC has probably lost enough pressure to activate the LP switch. If
>> you can find the location of the switch - it's a wired pressure
>> transducer teed into an AC line - and bypass it (for a short time to
>> avoid burnout) to make the clutch engage and run the system, then the
>> system has lost some pressure.
>
> Thanks, Ill give it a try tomorrow. I also noticed today that the
> electric
> radiator fan is running even though the car is cold. It should not do
> that
> should it? If some faulty sensor tells the computer the engine is hot,
> could
> it turn of the AC in an effort to keep the engine cold?
>
> Jone
>
>
The fan will run all the time the AC on ( * )display is shown on the
panel.. On our 97' model the fan ran although the LP switch had detected
low pressure and disengaged the compressor (clutch open).
So your problem most likely is a normal loss of refrigeration gas. Most
workshops will fill up the system for less than 2' NKR.. The prosedure
takes about an hour as it involves complete drainage, vacumtest and
refill..
The vacumtest however will not always detect small leakages. So if you
loose gas within a few weeks a check using tracing liquid and ultraviolet
light will be necessary. Got this for free, as I filled twice in a month..
had to change one line due to pittings under a plastic shrink fit hose at
a suspension point..
regards
ottar t
--
Using Opera's revolutionary e-mail client: http://www.opera.com/mail/
#29
Guest
Posts: n/a
Re: '02 A6 AC stopped working
On Sat, 09 Jul 2005 01:12:52 +0200, Jone Tytlandsvik <jone> wrote:
> Steve Sears wrote:
>>> Chances are, if you turn the system full cold and you don't hear the
>> occasional click of the clutch engaging on the compressor, and with
>> the engine off you can turn the compressor by hand (you can do it so
>> long as the clutch isn't welded to the pulley) will indicate that the
>> AC has probably lost enough pressure to activate the LP switch. If
>> you can find the location of the switch - it's a wired pressure
>> transducer teed into an AC line - and bypass it (for a short time to
>> avoid burnout) to make the clutch engage and run the system, then the
>> system has lost some pressure.
>
> Thanks, Ill give it a try tomorrow. I also noticed today that the
> electric
> radiator fan is running even though the car is cold. It should not do
> that
> should it? If some faulty sensor tells the computer the engine is hot,
> could
> it turn of the AC in an effort to keep the engine cold?
>
> Jone
>
>
The fan will run all the time the AC on ( * )display is shown on the
panel.. On our 97' model the fan ran although the LP switch had detected
low pressure and disengaged the compressor (clutch open).
So your problem most likely is a normal loss of refrigeration gas. Most
workshops will fill up the system for less than 2' NKR.. The prosedure
takes about an hour as it involves complete drainage, vacumtest and
refill..
The vacumtest however will not always detect small leakages. So if you
loose gas within a few weeks a check using tracing liquid and ultraviolet
light will be necessary. Got this for free, as I filled twice in a month..
had to change one line due to pittings under a plastic shrink fit hose at
a suspension point..
regards
ottar t
--
Using Opera's revolutionary e-mail client: http://www.opera.com/mail/
> Steve Sears wrote:
>>> Chances are, if you turn the system full cold and you don't hear the
>> occasional click of the clutch engaging on the compressor, and with
>> the engine off you can turn the compressor by hand (you can do it so
>> long as the clutch isn't welded to the pulley) will indicate that the
>> AC has probably lost enough pressure to activate the LP switch. If
>> you can find the location of the switch - it's a wired pressure
>> transducer teed into an AC line - and bypass it (for a short time to
>> avoid burnout) to make the clutch engage and run the system, then the
>> system has lost some pressure.
>
> Thanks, Ill give it a try tomorrow. I also noticed today that the
> electric
> radiator fan is running even though the car is cold. It should not do
> that
> should it? If some faulty sensor tells the computer the engine is hot,
> could
> it turn of the AC in an effort to keep the engine cold?
>
> Jone
>
>
The fan will run all the time the AC on ( * )display is shown on the
panel.. On our 97' model the fan ran although the LP switch had detected
low pressure and disengaged the compressor (clutch open).
So your problem most likely is a normal loss of refrigeration gas. Most
workshops will fill up the system for less than 2' NKR.. The prosedure
takes about an hour as it involves complete drainage, vacumtest and
refill..
The vacumtest however will not always detect small leakages. So if you
loose gas within a few weeks a check using tracing liquid and ultraviolet
light will be necessary. Got this for free, as I filled twice in a month..
had to change one line due to pittings under a plastic shrink fit hose at
a suspension point..
regards
ottar t
--
Using Opera's revolutionary e-mail client: http://www.opera.com/mail/
#30
Guest
Posts: n/a
Re: '02 A6 AC stopped working
Jone Tytlandsvik wrote:
..
>
> I found these codes but they are for '90 model and may not be the
> same for my car.
> http://www.audifans.com/twiki/bin/vi...iagnosticCodes
>
These codes seems to be the correct ones for my '96 A4 but not for my '02
A6.
Jone
..
>
> I found these codes but they are for '90 model and may not be the
> same for my car.
> http://www.audifans.com/twiki/bin/vi...iagnosticCodes
>
These codes seems to be the correct ones for my '96 A4 but not for my '02
A6.
Jone