Strange A/C behaviour
08-09-2004, 12:28 PM
#1
Guest
Posts: n/a
Strange A/C behaviour
Hello Audi lovers:
Haven't had any problems lately with my 89 100, but I have noticed lately
that when the engine is under load ( near zero vacuum ) that the a/c
switches from the upper vents to the lower vents, and blows hot air. It
seems to be switching to heater mode. As soon as I let up on the gas, it
returns to normal operation. The a/c is cold, and blows through the upper
vents again.
I have checked the recirculation door, and it is working properly. Where do
I look next?
Thanks,
--
Stephen Clark
89 Audi 100
Houston, Texas USA
See my Audi in the Registry at www.audiworld.com!
Haven't had any problems lately with my 89 100, but I have noticed lately
that when the engine is under load ( near zero vacuum ) that the a/c
switches from the upper vents to the lower vents, and blows hot air. It
seems to be switching to heater mode. As soon as I let up on the gas, it
returns to normal operation. The a/c is cold, and blows through the upper
vents again.
I have checked the recirculation door, and it is working properly. Where do
I look next?
Thanks,
--
Stephen Clark
89 Audi 100
Houston, Texas USA
See my Audi in the Registry at www.audiworld.com!
08-09-2004, 12:56 PM
#2
Guest
Posts: n/a
Re: Strange A/C behaviour
Stephen,
See if the vacuum check valve is leaking - put a mity vac on the vacuum line
onto the CC brain and pump it up to see if it is leaking.
Cheers!
--
Steve Sears
1987 Audi 5kTQ
1980 Audi 5k
1962 and '64 Auto Union DKW Junior deLuxes
(SPAM Blocker NOTE: Remove SHOES to reply)
"Stephen Clark" <nospam@spamnot.not> wrote in message
news:10hfd4c1rt85v7f@corp.supernews.com...
> Hello Audi lovers:
>
> Haven't had any problems lately with my 89 100, but I have noticed lately
> that when the engine is under load ( near zero vacuum ) that the a/c
> switches from the upper vents to the lower vents, and blows hot air. It
> seems to be switching to heater mode. As soon as I let up on the gas, it
> returns to normal operation. The a/c is cold, and blows through the upper
> vents again.
>
> I have checked the recirculation door, and it is working properly. Where
do
> I look next?
>
> Thanks,
>
>
> --
> Stephen Clark
> 89 Audi 100
> Houston, Texas USA
>
> See my Audi in the Registry at www.audiworld.com!
>
>
>
See if the vacuum check valve is leaking - put a mity vac on the vacuum line
onto the CC brain and pump it up to see if it is leaking.
Cheers!
--
Steve Sears
1987 Audi 5kTQ
1980 Audi 5k
1962 and '64 Auto Union DKW Junior deLuxes
(SPAM Blocker NOTE: Remove SHOES to reply)
"Stephen Clark" <nospam@spamnot.not> wrote in message
news:10hfd4c1rt85v7f@corp.supernews.com...
> Hello Audi lovers:
>
> Haven't had any problems lately with my 89 100, but I have noticed lately
> that when the engine is under load ( near zero vacuum ) that the a/c
> switches from the upper vents to the lower vents, and blows hot air. It
> seems to be switching to heater mode. As soon as I let up on the gas, it
> returns to normal operation. The a/c is cold, and blows through the upper
> vents again.
>
> I have checked the recirculation door, and it is working properly. Where
do
> I look next?
>
> Thanks,
>
>
> --
> Stephen Clark
> 89 Audi 100
> Houston, Texas USA
>
> See my Audi in the Registry at www.audiworld.com!
>
>
>
08-09-2004, 12:56 PM
#3
Guest
Posts: n/a
Re: Strange A/C behaviour
Stephen,
See if the vacuum check valve is leaking - put a mity vac on the vacuum line
onto the CC brain and pump it up to see if it is leaking.
Cheers!
--
Steve Sears
1987 Audi 5kTQ
1980 Audi 5k
1962 and '64 Auto Union DKW Junior deLuxes
(SPAM Blocker NOTE: Remove SHOES to reply)
"Stephen Clark" <nospam@spamnot.not> wrote in message
news:10hfd4c1rt85v7f@corp.supernews.com...
> Hello Audi lovers:
>
> Haven't had any problems lately with my 89 100, but I have noticed lately
> that when the engine is under load ( near zero vacuum ) that the a/c
> switches from the upper vents to the lower vents, and blows hot air. It
> seems to be switching to heater mode. As soon as I let up on the gas, it
> returns to normal operation. The a/c is cold, and blows through the upper
> vents again.
>
> I have checked the recirculation door, and it is working properly. Where
do
> I look next?
>
> Thanks,
>
>
> --
> Stephen Clark
> 89 Audi 100
> Houston, Texas USA
>
> See my Audi in the Registry at www.audiworld.com!
>
>
>
See if the vacuum check valve is leaking - put a mity vac on the vacuum line
onto the CC brain and pump it up to see if it is leaking.
Cheers!
--
Steve Sears
1987 Audi 5kTQ
1980 Audi 5k
1962 and '64 Auto Union DKW Junior deLuxes
(SPAM Blocker NOTE: Remove SHOES to reply)
"Stephen Clark" <nospam@spamnot.not> wrote in message
news:10hfd4c1rt85v7f@corp.supernews.com...
> Hello Audi lovers:
>
> Haven't had any problems lately with my 89 100, but I have noticed lately
> that when the engine is under load ( near zero vacuum ) that the a/c
> switches from the upper vents to the lower vents, and blows hot air. It
> seems to be switching to heater mode. As soon as I let up on the gas, it
> returns to normal operation. The a/c is cold, and blows through the upper
> vents again.
>
> I have checked the recirculation door, and it is working properly. Where
do
> I look next?
>
> Thanks,
>
>
> --
> Stephen Clark
> 89 Audi 100
> Houston, Texas USA
>
> See my Audi in the Registry at www.audiworld.com!
>
>
>
08-09-2004, 01:37 PM
#4
Guest
Posts: n/a
Re: Strange A/C behaviour
Wow! that was a quick reply. Do you sit there just waiting for the
questions? ( just kidding ).
And where would one find said CC brain? I don't have a manual...
Thanks for your promptness!
"Steve Sears" <steve.sears@SHOESsoil-mat.on.ca> wrote in message
news
_ORc.7492$a65.304731@news20.bellglobal.com.. .
> Stephen,
> See if the vacuum check valve is leaking - put a mity vac on the vacuum
line
> onto the CC brain and pump it up to see if it is leaking.
> Cheers!
>
> --
> Steve Sears
> 1987 Audi 5kTQ
> 1980 Audi 5k
> 1962 and '64 Auto Union DKW Junior deLuxes
> (SPAM Blocker NOTE: Remove SHOES to reply)
> "Stephen Clark" <nospam@spamnot.not> wrote in message
> news:10hfd4c1rt85v7f@corp.supernews.com...
> > Hello Audi lovers:
> >
> > Haven't had any problems lately with my 89 100, but I have noticed
lately
> > that when the engine is under load ( near zero vacuum ) that the a/c
> > switches from the upper vents to the lower vents, and blows hot air. It
> > seems to be switching to heater mode. As soon as I let up on the gas, it
> > returns to normal operation. The a/c is cold, and blows through the
upper
> > vents again.
> >
> > I have checked the recirculation door, and it is working properly. Where
> do
> > I look next?
> >
> > Thanks,
> >
> >
> > --
> > Stephen Clark
> > 89 Audi 100
> > Houston, Texas USA
> >
> > See my Audi in the Registry at www.audiworld.com!
> >
> >
> >
>
>
questions? ( just kidding ).
And where would one find said CC brain? I don't have a manual...
Thanks for your promptness!
"Steve Sears" <steve.sears@SHOESsoil-mat.on.ca> wrote in message
news
_ORc.7492$a65.304731@news20.bellglobal.com.. .> Stephen,
> See if the vacuum check valve is leaking - put a mity vac on the vacuum
line
> onto the CC brain and pump it up to see if it is leaking.
> Cheers!
>
> --
> Steve Sears
> 1987 Audi 5kTQ
> 1980 Audi 5k
> 1962 and '64 Auto Union DKW Junior deLuxes
> (SPAM Blocker NOTE: Remove SHOES to reply)
> "Stephen Clark" <nospam@spamnot.not> wrote in message
> news:10hfd4c1rt85v7f@corp.supernews.com...
> > Hello Audi lovers:
> >
> > Haven't had any problems lately with my 89 100, but I have noticed
lately
> > that when the engine is under load ( near zero vacuum ) that the a/c
> > switches from the upper vents to the lower vents, and blows hot air. It
> > seems to be switching to heater mode. As soon as I let up on the gas, it
> > returns to normal operation. The a/c is cold, and blows through the
upper
> > vents again.
> >
> > I have checked the recirculation door, and it is working properly. Where
> do
> > I look next?
> >
> > Thanks,
> >
> >
> > --
> > Stephen Clark
> > 89 Audi 100
> > Houston, Texas USA
> >
> > See my Audi in the Registry at www.audiworld.com!
> >
> >
> >
>
>
08-09-2004, 01:37 PM
#5
Guest
Posts: n/a
Re: Strange A/C behaviour
Wow! that was a quick reply. Do you sit there just waiting for the
questions? ( just kidding ).
And where would one find said CC brain? I don't have a manual...
Thanks for your promptness!
"Steve Sears" <steve.sears@SHOESsoil-mat.on.ca> wrote in message
news_ORc.7492$a65.304731@news20.bellglobal.com.. .
> Stephen,
> See if the vacuum check valve is leaking - put a mity vac on the vacuum
line
> onto the CC brain and pump it up to see if it is leaking.
> Cheers!
>
> --
> Steve Sears
> 1987 Audi 5kTQ
> 1980 Audi 5k
> 1962 and '64 Auto Union DKW Junior deLuxes
> (SPAM Blocker NOTE: Remove SHOES to reply)
> "Stephen Clark" <nospam@spamnot.not> wrote in message
> news:10hfd4c1rt85v7f@corp.supernews.com...
> > Hello Audi lovers:
> >
> > Haven't had any problems lately with my 89 100, but I have noticed
lately
> > that when the engine is under load ( near zero vacuum ) that the a/c
> > switches from the upper vents to the lower vents, and blows hot air. It
> > seems to be switching to heater mode. As soon as I let up on the gas, it
> > returns to normal operation. The a/c is cold, and blows through the
upper
> > vents again.
> >
> > I have checked the recirculation door, and it is working properly. Where
> do
> > I look next?
> >
> > Thanks,
> >
> >
> > --
> > Stephen Clark
> > 89 Audi 100
> > Houston, Texas USA
> >
> > See my Audi in the Registry at www.audiworld.com!
> >
> >
> >
>
>
questions? ( just kidding ).
And where would one find said CC brain? I don't have a manual...
Thanks for your promptness!
"Steve Sears" <steve.sears@SHOESsoil-mat.on.ca> wrote in message
news
_ORc.7492$a65.304731@news20.bellglobal.com.. .> Stephen,
> See if the vacuum check valve is leaking - put a mity vac on the vacuum
line
> onto the CC brain and pump it up to see if it is leaking.
> Cheers!
>
> --
> Steve Sears
> 1987 Audi 5kTQ
> 1980 Audi 5k
> 1962 and '64 Auto Union DKW Junior deLuxes
> (SPAM Blocker NOTE: Remove SHOES to reply)
> "Stephen Clark" <nospam@spamnot.not> wrote in message
> news:10hfd4c1rt85v7f@corp.supernews.com...
> > Hello Audi lovers:
> >
> > Haven't had any problems lately with my 89 100, but I have noticed
lately
> > that when the engine is under load ( near zero vacuum ) that the a/c
> > switches from the upper vents to the lower vents, and blows hot air. It
> > seems to be switching to heater mode. As soon as I let up on the gas, it
> > returns to normal operation. The a/c is cold, and blows through the
upper
> > vents again.
> >
> > I have checked the recirculation door, and it is working properly. Where
> do
> > I look next?
> >
> > Thanks,
> >
> >
> > --
> > Stephen Clark
> > 89 Audi 100
> > Houston, Texas USA
> >
> > See my Audi in the Registry at www.audiworld.com!
> >
> >
> >
>
>
08-09-2004, 01:54 PM
#6
Guest
Posts: n/a
Re: Strange A/C behaviour
Hey, what else is there to do....oh yeah...work.
The "cc brain" in my '87 is located behind the glove box - follow the vacuum
lines. You might want to check to see what Scott Mockry has on his
new'n'improved site:
www.sjmautotechnik.com
Cheers!
--
Steve Sears
1987 Audi 5kTQ
1980 Audi 5k
1962 and '64 Auto Union DKW Junior deLuxes
(SPAM Blocker NOTE: Remove SHOES to reply)
"Stephen Clark" <nospam@spamnot.not> wrote in message
news:10hfh49s4qsqhc4@corp.supernews.com...
> Wow! that was a quick reply. Do you sit there just waiting for the
> questions? ( just kidding ).
>
> And where would one find said CC brain? I don't have a manual...
>
> Thanks for your promptness!
>
>
> "Steve Sears" <steve.sears@SHOESsoil-mat.on.ca> wrote in message
> news_ORc.7492$a65.304731@news20.bellglobal.com.. .
> > Stephen,
> > See if the vacuum check valve is leaking - put a mity vac on the vacuum
> line
> > onto the CC brain and pump it up to see if it is leaking.
> > Cheers!
> >
> > --
> > Steve Sears
> > 1987 Audi 5kTQ
> > 1980 Audi 5k
> > 1962 and '64 Auto Union DKW Junior deLuxes
> > (SPAM Blocker NOTE: Remove SHOES to reply)
> > "Stephen Clark" <nospam@spamnot.not> wrote in message
> > news:10hfd4c1rt85v7f@corp.supernews.com...
> > > Hello Audi lovers:
> > >
> > > Haven't had any problems lately with my 89 100, but I have noticed
> lately
> > > that when the engine is under load ( near zero vacuum ) that the a/c
> > > switches from the upper vents to the lower vents, and blows hot air.
It
> > > seems to be switching to heater mode. As soon as I let up on the gas,
it
> > > returns to normal operation. The a/c is cold, and blows through the
> upper
> > > vents again.
> > >
> > > I have checked the recirculation door, and it is working properly.
Where
> > do
> > > I look next?
> > >
> > > Thanks,
> > >
> > >
> > > --
> > > Stephen Clark
> > > 89 Audi 100
> > > Houston, Texas USA
> > >
> > > See my Audi in the Registry at www.audiworld.com!
> > >
> > >
> > >
> >
> >
>
>
The "cc brain" in my '87 is located behind the glove box - follow the vacuum
lines. You might want to check to see what Scott Mockry has on his
new'n'improved site:
www.sjmautotechnik.com
Cheers!
--
Steve Sears
1987 Audi 5kTQ
1980 Audi 5k
1962 and '64 Auto Union DKW Junior deLuxes
(SPAM Blocker NOTE: Remove SHOES to reply)
"Stephen Clark" <nospam@spamnot.not> wrote in message
news:10hfh49s4qsqhc4@corp.supernews.com...
> Wow! that was a quick reply. Do you sit there just waiting for the
> questions? ( just kidding ).
>
> And where would one find said CC brain? I don't have a manual...
>
> Thanks for your promptness!
>
>
> "Steve Sears" <steve.sears@SHOESsoil-mat.on.ca> wrote in message
> news
_ORc.7492$a65.304731@news20.bellglobal.com.. .> > Stephen,
> > See if the vacuum check valve is leaking - put a mity vac on the vacuum
> line
> > onto the CC brain and pump it up to see if it is leaking.
> > Cheers!
> >
> > --
> > Steve Sears
> > 1987 Audi 5kTQ
> > 1980 Audi 5k
> > 1962 and '64 Auto Union DKW Junior deLuxes
> > (SPAM Blocker NOTE: Remove SHOES to reply)
> > "Stephen Clark" <nospam@spamnot.not> wrote in message
> > news:10hfd4c1rt85v7f@corp.supernews.com...
> > > Hello Audi lovers:
> > >
> > > Haven't had any problems lately with my 89 100, but I have noticed
> lately
> > > that when the engine is under load ( near zero vacuum ) that the a/c
> > > switches from the upper vents to the lower vents, and blows hot air.
It
> > > seems to be switching to heater mode. As soon as I let up on the gas,
it
> > > returns to normal operation. The a/c is cold, and blows through the
> upper
> > > vents again.
> > >
> > > I have checked the recirculation door, and it is working properly.
Where
> > do
> > > I look next?
> > >
> > > Thanks,
> > >
> > >
> > > --
> > > Stephen Clark
> > > 89 Audi 100
> > > Houston, Texas USA
> > >
> > > See my Audi in the Registry at www.audiworld.com!
> > >
> > >
> > >
> >
> >
>
>
08-09-2004, 01:54 PM
#7
Guest
Posts: n/a
Re: Strange A/C behaviour
Hey, what else is there to do....oh yeah...work.
The "cc brain" in my '87 is located behind the glove box - follow the vacuum
lines. You might want to check to see what Scott Mockry has on his
new'n'improved site:
www.sjmautotechnik.com
Cheers!
--
Steve Sears
1987 Audi 5kTQ
1980 Audi 5k
1962 and '64 Auto Union DKW Junior deLuxes
(SPAM Blocker NOTE: Remove SHOES to reply)
"Stephen Clark" <nospam@spamnot.not> wrote in message
news:10hfh49s4qsqhc4@corp.supernews.com...
> Wow! that was a quick reply. Do you sit there just waiting for the
> questions? ( just kidding ).
>
> And where would one find said CC brain? I don't have a manual...
>
> Thanks for your promptness!
>
>
> "Steve Sears" <steve.sears@SHOESsoil-mat.on.ca> wrote in message
> news_ORc.7492$a65.304731@news20.bellglobal.com.. .
> > Stephen,
> > See if the vacuum check valve is leaking - put a mity vac on the vacuum
> line
> > onto the CC brain and pump it up to see if it is leaking.
> > Cheers!
> >
> > --
> > Steve Sears
> > 1987 Audi 5kTQ
> > 1980 Audi 5k
> > 1962 and '64 Auto Union DKW Junior deLuxes
> > (SPAM Blocker NOTE: Remove SHOES to reply)
> > "Stephen Clark" <nospam@spamnot.not> wrote in message
> > news:10hfd4c1rt85v7f@corp.supernews.com...
> > > Hello Audi lovers:
> > >
> > > Haven't had any problems lately with my 89 100, but I have noticed
> lately
> > > that when the engine is under load ( near zero vacuum ) that the a/c
> > > switches from the upper vents to the lower vents, and blows hot air.
It
> > > seems to be switching to heater mode. As soon as I let up on the gas,
it
> > > returns to normal operation. The a/c is cold, and blows through the
> upper
> > > vents again.
> > >
> > > I have checked the recirculation door, and it is working properly.
Where
> > do
> > > I look next?
> > >
> > > Thanks,
> > >
> > >
> > > --
> > > Stephen Clark
> > > 89 Audi 100
> > > Houston, Texas USA
> > >
> > > See my Audi in the Registry at www.audiworld.com!
> > >
> > >
> > >
> >
> >
>
>
The "cc brain" in my '87 is located behind the glove box - follow the vacuum
lines. You might want to check to see what Scott Mockry has on his
new'n'improved site:
www.sjmautotechnik.com
Cheers!
--
Steve Sears
1987 Audi 5kTQ
1980 Audi 5k
1962 and '64 Auto Union DKW Junior deLuxes
(SPAM Blocker NOTE: Remove SHOES to reply)
"Stephen Clark" <nospam@spamnot.not> wrote in message
news:10hfh49s4qsqhc4@corp.supernews.com...
> Wow! that was a quick reply. Do you sit there just waiting for the
> questions? ( just kidding ).
>
> And where would one find said CC brain? I don't have a manual...
>
> Thanks for your promptness!
>
>
> "Steve Sears" <steve.sears@SHOESsoil-mat.on.ca> wrote in message
> news
_ORc.7492$a65.304731@news20.bellglobal.com.. .> > Stephen,
> > See if the vacuum check valve is leaking - put a mity vac on the vacuum
> line
> > onto the CC brain and pump it up to see if it is leaking.
> > Cheers!
> >
> > --
> > Steve Sears
> > 1987 Audi 5kTQ
> > 1980 Audi 5k
> > 1962 and '64 Auto Union DKW Junior deLuxes
> > (SPAM Blocker NOTE: Remove SHOES to reply)
> > "Stephen Clark" <nospam@spamnot.not> wrote in message
> > news:10hfd4c1rt85v7f@corp.supernews.com...
> > > Hello Audi lovers:
> > >
> > > Haven't had any problems lately with my 89 100, but I have noticed
> lately
> > > that when the engine is under load ( near zero vacuum ) that the a/c
> > > switches from the upper vents to the lower vents, and blows hot air.
It
> > > seems to be switching to heater mode. As soon as I let up on the gas,
it
> > > returns to normal operation. The a/c is cold, and blows through the
> upper
> > > vents again.
> > >
> > > I have checked the recirculation door, and it is working properly.
Where
> > do
> > > I look next?
> > >
> > > Thanks,
> > >
> > >
> > > --
> > > Stephen Clark
> > > 89 Audi 100
> > > Houston, Texas USA
> > >
> > > See my Audi in the Registry at www.audiworld.com!
> > >
> > >
> > >
> >
> >
>
>
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