[Bulk] Re: [V6-12v] no heat at idle .
Clive Young
cyoung1661 at rogers.com
Mon Feb 14 14:43:37 EST 2005
Gee you would think we didn't have jobs !!!!
anyway I tried one last thing Tom eluded to. I filled the reservoir untill
fluid started to come out of the upper bleed screw, it means REALLY
overfilling the reservoir ( up to the bottom of the threaded part for the
cap ) but sure enough fluid comes out of the bleed screw. I am warming the
car up as we speak and while it is overfull I let some coolant out of the
bleed screw. no air but lots of fluid. So now of course it is running all
over my shoes as the excess comes out of the expansion tank. .... maybe this
is the way I am suppose to do it ... If your shoes are dry you are doing it
wrong?
As far as the bleed screw goes I had the same theory about the leak
back. (thats how I broke it ) just a little tighter !!!.. I ended up
gettinga M6 plastic slot head screw for keeping on plates and it worked
great full seal.
Anyway I will let you guys know with my thermal study when i get my thermal
guage back from the calibrators.
Thanks Guys
----- Original Message -----
From: "Tom Christiansen" <tomchr at ee.washington.edu>
To: "Clive Young" <cyoung1661 at rogers.com>; "Nathan White"
<natwhite at mnsi.net>
Cc: "Audi list" <v6-12v at audifans.com>
Sent: Monday, February 14, 2005 2:19 PM
Subject: Re: [Bulk] Re: [V6-12v] no heat at idle .
> Clive,
>
> You mentioned that you broke the bleed by the firewall (like everyone else
> did). Could it be that it doesn't seal right when cold and sucks air in?
> I'd try gooping it up with water pump sealant or something
>
> Tom
>
> >Mine is a manual heating system. I do think it is a air gap also , but I
> >think it keeps coming back .. I have completely flushed the system
several
> >times . If I open the bleeder in the heater hose until warm coolant flows
> >out and I cap it off. The heater core is perfectly clear,comes out as
fast
> >as I can push it in with a garden hose, after bleeding it while warming
up,
> >i find that the next day when I pressurize the reservoir and open the
bleed
> >screw, air comes out everytime, and then liquid. .then I close it. I
could
> >repeat the cycle forever and never seam to get all the air out. Common
sense
> >says this is as ound procedure but maybe it isn't ? ----- Original
> >Message -----
> >From: "Nathan White" <natwhite at mnsi.net>
> >To: "Clive Young" <cyoung1661 at rogers.com>
> >Sent: Monday, February 14, 2005 12:30 PM
> >Subject: Re: [Bulk] Re: [V6-12v] no heat at idle .
> >
> >
> > > The way I see it, at speed, the water pump turns faster, building more
> > > pressure, allowing the coolant to flow easier. At idle, when you get
no
> > > heat, the water pump spins the slowest. The only thing I can think of
is
> > > a air pocket trapped inside. I have heard the V6 is VERY sensitive to
> > > air in the coolant system.
> > >
> > > Have you completely flushed the coolant system?
> > >
> > > The MAIN bleeder screw is actually that allen head. The other is
simply
> > > secondary. I used a socket set, with a long extension to reach it.
> > >
> > > There is also a Coolant Temp Sensor (CTS) that may be causing
problems.
> > > Usually gives off a check engine light however.
> > >
> > > Thanks,
> > >
> > > NW
> > >
> > > My heat definetely works 100% at idle.
> > >
> > > Clive Young wrote:
> > >
> > > >Nathan
> > > >
> > > > I have been looking all over the net all weekend for that excellent
> >picture
> > > >of the cooling system. I finally found something late last night (
not as
> > > >good as this one though ) . The problem is that this car has been
like
> >this
> > > >for some time as the previous owner complained of this also. Do you
> >really
> > > >think it has an air lock for years ? On the off chance it might have
been
> > > >the case i tried to get at the bleed screw and at least see what
would
> > > >happen.... nice of them to put a sensor bracket right over the top so
you
> > > >can't get to it .. and when I eventually did with an allen wrench ,
> >forget
> > > >it , the thing is welded in there !! So i retreated and figured any
air
> > > >would get to the top bleed screw anyway.
> > > >
> > > >What do you think ?
> > > >
> > > >
> > > >
> > > >----- Original Message -----
> > > >From: "Nathan White" <natwhite at mnsi.net>
> > > >To: <V6-12v at audifans.com>
> > > >Sent: Sunday, February 13, 2005 6:36 PM
> > > >Subject: Re: [Bulk] Re: [V6-12v] no heat at idle .
> > > >
> > > >
> > > >
> > > >
> > > >>Coolant flow diagram. Notice the second bleed screw on the metal
coolant
> > > >>pipe, near the egr area. It is a hex screw, be carefull not to get
> > > >>coolant in your face.
> > > >>
> > > >>http://pictureposter.audiworld.com/6607/coolpic.jpg
> > > >>
> > > >>NW
> > > >>
> > > >>
> > > >>
> > > >>Clive Young wrote:
> > > >>
> > > >>
> > > >>
> > > >>>Marc
> > > >>>
> > > >>>I am unsue of what you mean by heating coils , but if you are
talking
> > > >>>
> > > >>>
> > > >about
> > > >
> > > >
> > > >>>the heater core it is in an enclosed box that you have to take the
> >centre
> > > >>>console off and dashboard out to get to , not to mention
discharging
> >the
> > > >>>
> > > >>>
> > > >AC
> > > >
> > > >
> > > >>>system to boot !
> > > >>>
> > > >>>An intersting not however. If I am idling and the car runs up to
about
> > > >>>
> > > >>>
> > > >95C
> > > >
> > > >
> > > >>>with heating on full blast blows cold- luke warm. On the highway
with
> >the
> > > >>>engine cooler at about 80C ( last night it was cold out ,
about -10C )
> > > >>>
> > > >>>
> > > >The
> > > >
> > > >
> > > >>>heat is just belting out ! so it tells me I have a problem with
rate of
> > > >>>delivery of coolant to the core, or I am injesting cold air ( the
blend
> > > >>>door ) and it is being compensated for at speed. Bot sysytms look
great
> > > >>>though and the belend door I can hear snapping oopen and closed...
> > > >>>
> > > >>>very strange ...
> > > >>>----- Original Message -----
> > > >>>From: "The CyberPoet" <thecyberpoet at cyberpoet.net>
> > > >>>To: "Clive Young" <cyoung1661 at rogers.com>
> > > >>>Sent: Sunday, February 13, 2005 2:46 AM
> > > >>>Subject: Re: [Bulk] Re: [V6-12v] no heat at idle .
> > > >>>
> > > >>>
> > > >>>
> > > >>>
> > > >>>
> > > >>>
> > > >>>>Did you try cleaning the heating coils yet?
> > > >>>>
> > > >>>>Cheers
> > > >>>>=-= Marc
> > > >>>>
> > > >>>>On Saturday, February 12, 2005, at 11:42 PM, Clive Young wrote:
> > > >>>>
> > > >>>>
> > > >>>>
> > > >>>>
> > > >>>>
> > > >>>>>last act of a desperate man ....
> > > >>>>>
> > > >>>>>I have only bled it about ... oh i'd say 25 times.... I even
broke
> >the
> > > >>>>>plastic bleed screw...... i was actually amazes I bled it so many
> > > >>>>>times without it breaking.... I would always let it warm up intil
> > > >>>>>fluid came out then sealed it off. I even tried pressurizing the
> > > >>>>>reservoir to force any air up to the bleed screw,that didn't help
> > > >>>>>either ... as I would think I got some air out, but it would be
the
> > > >>>>>same result, besides, i think by pressurizing the reservoir I
think I
> > > >>>>>am injecting air into the sytem via the overflow hose into the
top of
> > > >>>>>the rad.
> > > >>>>> ----- Original Message -----
> > > >>>>> From: sub
> > > >>>>> To: Clive Young
> > > >>>>> Cc: Audi list
> > > >>>>> Sent: Saturday, February 12, 2005 10:26 AM
> > > >>>>> Subject: Re: [Bulk] Re: [V6-12v] no heat at idle .
> > > >>>>>
> > > >>>>>
> > > >>>>> Hmm, it's not that drastic (stopping at the light). I did have
to
> > > >>>>>replace my thermostat last year as it broke into 2 separate
pices.
> > > >>>>>However when that happened I was getting engine codes and engine
> > > >>>>>warning light after about 5 to 10 min of driving, that the
engine
> >was
> > > >>>>>not warming up on time.
> > > >>>>>
> > > >>>>> Did you try to bleed the coolant pipes that go through the
firewall
> > > >>>>>into the cabin ? When I replaced my thermostat I had to drain
the
> > > >>>>>coolant afterwards I had to bring the engine up to temp and try
to
> > > >>>>>bleed the system, I did that 2 or 3 times before the heater
started
> > > >>>>>working, even though my coolant temp gage showed 90c.
> > > >>>>>
> > > >>>>> hope this helps
> > > >>>>>
> > > >>>>> Clive Young wrote:
> > > >>>>>Thanks that is really good info .
> > > >>>>>
> > > >>>>>If you stop the car and let it idle again does the heat drop off
> > > >>>>>again. ?
> > > >>>>>Mine is fine while I am driving but if I stop at a light , by the
> >time
> > > >>>>>it
> > > >>>>>goes green again the air is luke warm at best , sometimes down
right
> > > >>>>>cool !
> > > >>>>>----- Original Message -----
> > > >>>>>From: "sub" <subscriptions at globalape.com>
> > > >>>>>To: "Clive Young" <cyoung1661 at rogers.com>
> > > >>>>>Sent: Friday, February 11, 2005 11:19 PM
> > > >>>>>Subject: [Bulk] Re: [V6-12v] no heat at idle .
> > > >>>>>
> > > >>>>>
> > > >>>>> Clive, this engine is hard to get hot in sub 0 c temp's.
> > > >>>>>
> > > >>>>>My 1993 90CSQ, after sitting in the garage (-5c) for 15 min
starts
> > > >>>>>blowing semi warm air (no temp probe to test it), if I drive it
it
> > > >>>>>becomes warmer faster, but to get it really hot you have to drive
it
> > > >>>>>really hard. ex: empty parking lot after fresh powder = lot's of
> > > >>>>>Quattro fun :-))
> > > >>>>>
> > > >>>>>Clive Young wrote:
> > > >>>>>
> > > >>>>> Well Finally I must say I feel totally defeated. I have tried
> > > >>>>>everything
> > > >>>>> I can think of and it just won't produce decent heat at
idle. I
> > > >>>>>just have
> > > >>>>>one or two last few questions before I put the nail in the
coffin.
> > > >>>>> Is there anyone right now that has there car pumping out decent
heat
> > > >>>>>at
> > > >>>>> idle with an ambiet outside of zero to minus 10 celcius , if
> > > >>>>>anyone can
> > > >>>>>stick a thermal probe in the heater vent I would aprreciate it.
At
> > > >>>>>least
> > > >>>>>that would tell me if is suppose to work.
> > > >>>>> The P.O. told me he took the car to AUDI for the same reason ,
they
> > > >>>>>put
> > > >>>>> a thermostat in it , flushed the system, charged him a whack
of
> > > >>>>>money but
> > > >>>>>still didn't fix it. so what chance do I have .. those guys do
this
> > > >>>>>for a
> > > >>>>>living !
> > > >>>>> Oh well , I have just had enough......
> > > >>>>>_______________________________________________
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