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

Mon Feb 14 14:20:07 EST 2005

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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> > >>>>>
> > >>>>>
> > >>>>>
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> > >
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>
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