[urq] Ideas for rough running continued - Solved!
Ingo Rautenberg
i.rautenberg at waratap.com
Thu Apr 7 13:17:31 EDT 2005
Good point, L-A. The cork gasket is between the air meter housing
(aluminum) and the plastic upper air cleaner cover. If you need to go this
far, then do it ever so gently...
----- Original Message -----
From: <Louis-Alain_Richard at computerhorizons.com>
To: "Ingo Rautenberg" <i.rautenberg at waratap.com>
Cc: "UrqList" <urq at audifans.com>; <urq-bounces at audifans.com>
Sent: Thursday, April 07, 2005 1:11 PM
Subject: Re: [urq] Ideas for rough running continued - Solved!
>
>
>
>
>
> ... but be careful, there is a cork gasket between the 2 parts; not
> inexpensive (20$+ IIRW) and easily pinched when reasembling.
>
> LaR
>
>
>
>
> "Ingo Rautenberg"
> <i.rautenberg at war
> atap.com> To
> Sent by: "UrqList" <urq at audifans.com>
> urq-bounces at audif cc
> ans.com
> Subject
> Re: [urq] Ideas for rough running
> 2005-04-07 13:11 continued - Solved!
>
>
>
>
>
>
>
>
>
>
> Just the center bolt.
>
> If there's a problem, then
>
> Remove the fuel distributor from the air-meter assembly (3 bolts) and then
> there's 2-3 more near the back that might still be attached to things like
> the Frequency valve and hose clamp(s). Then remove the air cleaner clips
> and lift out.
>
> ----- Original Message -----
> From: "Ed Kellock" <ekellock at gmail.com>
> To: "UrqList" <urq at audifans.com>
> Sent: Thursday, April 07, 2005 1:02 PM
> Subject: Re: [urq] Ideas for rough running continued - Solved!
>
>
> > Will do. Was about to dive in like that last night, but hesitated to
> > wait for some direction just like this. Thanks!
> >
> > So just remove the one bolt in the center of the plate? I was
> > thinking I would have to remove the 6 or 8 bolts around the top of the
> > whole metering head and lift all that away.
> >
> > Ed
> >
> > On Apr 7, 2005 10:04 AM, Ingo Rautenberg <i.rautenberg at waratap.com>
> wrote:
> > > Check that throttle plate! Simply remove the igloo and check for free
> > > play/resistance. If it appears to be binding, remove the plate by
> > > unscrewing the 10mm bolt and spring washer and removing the plate to
> > > inspect. No diddle-daddling... ;-)
> > >
> > > ----- Original Message -----
> > > From: "Ed Kellock" <ekellock at gmail.com>
> > > To: "UrqList" <urq at audifans.com>
> > > Sent: Thursday, April 07, 2005 11:50 AM
> > > Subject: Re: [urq] Ideas for rough running continued - Solved!
> > >
> > > > The tach needle drops to zero as if the power to it went away. When
> > > > power returns, it pops back to whatever rpm the engine is turning at
> > > > the moment.
> > > >
> > > > Ed
> > > >
> > > > On Apr 7, 2005 8:16 AM, Ingo Rautenberg <i.rautenberg at waratap.com>
> wrote:
> > > > > Ed,
> > > > >
> > > > > When you say the tach drops, does it drop with associated engine
> rpm
> or
> > > does
> > > > > it just drop to nothing like the power to the tach needle was
> clipped.
> > > Mine
> > > > > would drop, too, but I couldn't discern whether it was electrical
> or
> > > because
> > > > > the fuel/air was effectively shut off -- which in my case it was.
> Have
> > > you
> > > > > checked the metering plate for any kind of binding yet? Mine got
> > > > > progressively worse to the point it wouldn't start at all...
> > > > >
> > > > > ----- Original Message -----
> > > > > From: "Ed Kellock" <ekellock at gmail.com>
> > > > > To: "UrqList" <urq at audifans.com>
> > > > > Sent: Wednesday, April 06, 2005 9:41 PM
> > > > > Subject: Re: [urq] Ideas for rough running continued - Solved!
> > > > >
> > > > > > I may have had an "AHA!" moment.
> > > > > >
> > > > > > I went out the adjust the distributor subsequent to my weekend
> post
> > > > > > and Ingo's response to see if anything changed with my ignition
> > > > > > cutout. It didn't. The car started easily but sure enough the
> > > > > > ignition cutout is still there.
> > > > > >
> > > > > > As I sat there opening and closing the throttle, I noticed that
> the
> > > > > > cutout seemed to occur as soon as I lifted my foot. Once in a
> while
> > > > > > it would happen a moment later as the rpms fell. It did it
> reliably
> > > > > > enough that I believe I can connect the behavior with the
> symptom.
> > > > > > Not high rpm's involved, most of the time it was nothing over
> 2500.
> > > > > >
> > > > > > When the ignition cuts out, the tach needle drops every time but
> the
> > > > > > fuel gauge seems to be unaffected. And the relay in the fuse
> panel
> > > > > > that clicks doesn't do it every time, only when the duration of
> the
> > > > > > cutout is longer.
> > > > > >
> > > > > > What's the gizmo that holds the idle up a bit until the car
> warms,
> the
> > > > > > idle control? I think the temp sensor for mine is somewhat
> defective
> > > > > > because the rad fan had already kicked on once before the idle
> control
> > > > > > let the idle drop down to a more normal warm idle. As soon as
> this
> > > > > > occurred the cutout started happening by itself repeatedly but
> not
> > > > > > necessarilly enough to kill the engine. When I opened/closed
the
> > > > > > throttle to keep it running I found that I could reproduce the
> cutout
> > > > > > much more directly always on decel or lift throttle.
> > > > > >
> > > > > > Anyway, all of this reminded me of Ingo's sticking fuel plate
> spring.
> > > > > > Now, maybe I'm pairing apples and oranges a bit here, but the
> > > > > > similarity is interesting at very least.
> > > > > >
> > > > > > Is there any relation between the lack of air flow and resulting
> fuel
> > > > > > cutout as in Ingo's case and the ignition trigger?
> > > > > >
> > > > > > Ed
> > > > > >
> > > > > > ----- Original Message -----
> > > > > > From: "Ingo Rautenberg" <irautenberg at comcast.net>
> > > > > > To: "UrqList" <urq at audifans.com>
> > > > > > Sent: Saturday, March 26, 2005 5:02 PM
> > > > > > Subject: Re: [urq] Ideas for rough running continued - Solved!
> > > > > >
> > > > > >
> > > > > > > It was the Airflow meter. Now I need to have my exhaust
> reattached
> > > > > > > (currently held together with baling wire). Really quite
> > > > > > remarkable. After
> > > > > > > replacing almost every conceivable possible problematic piece
> (save
> > > > > > entire
> > > > > > > engine or turbocharger) with known good, I decided to look at
> the
> > > > > > airflow
> > > > > > > metering plate again, which I initially thought was binding,
> and
> > > > > > compared it
> > > > > > > with another that I had just recently bought. What I
> discovered
> was
> > > > > > that it
> > > > > > > was not sticking against the venturi wall, but rather that the
> pin
> > > > > > that
> > > > > > > rests on the leaf spring had actually worn a hole in it! On
> decel,
> > > > > > it would
> > > > > > > essentially stick, the pin lodging itself into the hole,
> choking
> off
> > > > > > air and
> > > > > > > fuel. It would not restart unless I turned the CO screw to
> richen
> > > > > > the
> > > > > > > mixture, which would apparently plop the plate up again. Some
> pics:
> > > > > > >
> > > > > > > As seen from below (air filter side):
> > > > > > > http://www.dtwaudi.com/album_pic.php?pic_id=2093
> > > > > > >
> > > > > > > And from above with mtereing plate removed:
> > > > > > > http://www.dtwaudi.com/album_pic.php?pic_id=2094
> > > > > > >
> > > > > > >
> > > > > > > I highly recommend anyone who has similar sysmptons look at
> theirs
> > > > > > by taking
> > > > > > > off their igloo, removing the air metering plate (10mm bolt)
> and
> > > > > > inspecting
> > > > > > > the "rest" area for wear or wear-thru. Maybe that's your
> problem,
> > > > > > Ed.
> > > > > > >
> > > > > > > Ingo (tired but glad I finally found the problem)
> > > > > > >
> > > > > > > Happy Easter!
> > > > > > >
> > > > > > > _______________________________________________
> > > > > > > Audifans urq mailing list
> > > > > > > Send posts to: mailto:urq at audifans.com
> > > > > > > Manage your list connection:
> > > > > > http://www.audifans.com/mailman/listinfo/urq
> > > > > > > Have an urq question? Check the Audifans Knowledgebase!
> > > > > > > http://www.audi-quattro.org/cgi-bin/twiki/view/Audi/UrQuattro
> > > > > > > Have an urq answer? ... Please help others by adding to the KB
> ...
> > > > > > all contributions welcome!
> > > > > >
> > > > > > _______________________________________________
> > > > > > Audifans urq mailing list
> > > > > > Send posts to: mailto:urq at audifans.com
> > > > > > Manage your list connection:
> > > http://www.audifans.com/mailman/listinfo/urq
> > > > > > Have an urq question? Check the Audifans Knowledgebase!
> > > > > > http://www.audi-quattro.org/cgi-bin/twiki/view/Audi/UrQuattro
> > > > > > Have an urq answer? ... Please help others by adding to the KB
> ...
> all
> > > > > contributions welcome!
> > > > > >
> > > > >
> > > > > ---
> > > > > Outgoing mail is certified Virus Free.
> > > > > Checked by AVG anti-virus system (http://www.grisoft.com).
> > > > > Version: 6.0.857 / Virus Database: 584 - Release Date: 2/10/2005
> > > > >
> > > > >
> > > > _______________________________________________
> > > > Audifans urq mailing list
> > > > Send posts to: mailto:urq at audifans.com
> > > > Manage your list connection:
> http://www.audifans.com/mailman/listinfo/urq
> > > > Have an urq question? Check the Audifans Knowledgebase!
> > > > http://www.audi-quattro.org/cgi-bin/twiki/view/Audi/UrQuattro
> > > > Have an urq answer? ... Please help others by adding to the KB ...
> all
> > > contributions welcome!
> > > >
> > >
> > > ---
> > > Outgoing mail is certified Virus Free.
> > > Checked by AVG anti-virus system (http://www.grisoft.com).
> > > Version: 6.0.857 / Virus Database: 584 - Release Date: 2/10/2005
> > >
> > >
> > _______________________________________________
> > Audifans urq mailing list
> > Send posts to: mailto:urq at audifans.com
> > Manage your list connection:
http://www.audifans.com/mailman/listinfo/urq
> > Have an urq question? Check the Audifans Knowledgebase!
> > http://www.audi-quattro.org/cgi-bin/twiki/view/Audi/UrQuattro
> > Have an urq answer? ... Please help others by adding to the KB ... all
> contributions welcome!
> >
>
>
> ---
> Outgoing mail is certified Virus Free.
> Checked by AVG anti-virus system (http://www.grisoft.com).
> Version: 6.0.857 / Virus Database: 584 - Release Date: 2/10/2005
>
> _______________________________________________
> Audifans urq mailing list
> Send posts to: mailto:urq at audifans.com
> Manage your list connection: http://www.audifans.com/mailman/listinfo/urq
> Have an urq question? Check the Audifans Knowledgebase!
> http://www.audi-quattro.org/cgi-bin/twiki/view/Audi/UrQuattro
> Have an urq answer? ... Please help others by adding to the KB ... all
> contributions welcome!
>
>
>
---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.857 / Virus Database: 584 - Release Date: 2/10/2005
More information about the urq
mailing list