[Bulk] Re: [V6-12v] no heat at idle .

Mon Feb 14 16:07:00 EST 2005

"Job" should really be a four-letter word... ;-)

Tom

At 11:43 AM 2/14/2005, Clive Young wrote:
>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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> > > > >>>>>
> > > > >>>>>
> > > > >>>>>
> > > > >>>>>
> > > > >>>>>
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