[s-cars] Codes

[Douglas Fifield]

Guys,

I am interested in what you find.  As you may know, I am experiencing
similar symptoms on my 95.5 S6 Avant.  It runs well under boost, but
bogs and loses power intermittently at light throttle running.
Sometimes sitting at a light, it will be idling fine, and then it
feels like it drops a cylinder.  Attempts at isolating a cylinder by
pulling injector connections has been unsuccessful.

D.

On 7/25/06, Ernest Seow <ezveedub at hotmail.com> wrote:
> Also, to test the induction system, you must block off all breather hose
> attaches to the inlet tract. I know on 1.8T, if you don't, you will have oil
> pushed into the combustion chambers, and it smokes for a long time. I test
> the systems right at the turbo inlet, not from the inlet hose. The hose is
> not supposed to see positive pressure, unless you have a good aftermarket
> inlet hose. The VAG tester is from the G-60 Corrado. It uses a 2 gauges on a
> leakdown gauge setup. You set the inlet pressure, then open the line to
> pressure the system. You also have to set the engine at a certain timing
> mark, depending on your cams. VW Corrados were 3 teeth retarded from TDC to
> get complete valve closing.  I will dig one of these units up and test my
> system sometime this week.
>
>
> >From: Robert Myers <bob at chips-ur-s.com>
> >To: "Ernest Seow" <ezveedub at hotmail.com>, s-car-list at audifans.com
> >Subject: Re:  Codes Date: Mon, 24 Jul 2006 23:16:12 -0400
> >
> >
> >Ernest,
> >
> >This particular ECU has a Bosch 3 bar transducer but, IME, there is no
> >problem with the VMAP.  Either is fine.
> >
> >Except for one time the engine hasn't stopped.  If I get on the accelerator
> >a bit too much it just stumbles and feels like it isn't taking fuel.  If I
> >let off the loud pedal a bit it comes right back and runs quite acceptably
> >for cruising the highway at somewhat above legal speeds.  There has been no
> >"hitting the wall" type feeling.  It just sort of bogs down and doesn't
> >want to go anywhere and the speed falls off until I ease off the loud
> >pedal.  This car was new to me about a year ago.  It contains an OXS of
> >unknown age.  I have replaced the fuel pump and plugs.  OXS is next as soon
> >as the connector harness (on order) arrives.  Fuel filter is also of
> >undetermined age.  A new one is on order.  A can of Techron has been run
> >through the injectors.  The induction system has been pressure tested and
> >no leaks were found.  I have installed several different flavors of RS2
> >software into the ECU to see if any of those variations make a difference.
> >None found.  I have swapped a different ECU (containing a VMAP) into the
> >car.  No effect.  I'm fairly well convinced it is not a software problem.
> >
> >Tomorrow I plan on checking the throttle switch for proper operation.  I
> >may swap out the WGFV to see if the spare I have makes any difference.  I
> >may also swap out the BPV.  I will put the OEM coil-pack back into the car
> >to isolate any effect from the 1.8t coil conversion which I did a while
> >back.
> >
> >You can build your own pressure tester gadget.  Obtain about 4 inches of 3
> >inch PVC pipe.  You may need to use thin-wall stuff to get that diameter.
> >Fit a tire valve in a cap for that pipe and glue the cap onto the pipe.
> >Disconnect the hose from the MAF, insert the pressurizer gadget into the
> >hose and clamp it tightly.  You can now pressurize the entire system using
> >shop air.
> >
> >At 10:43 PM 7/24/2006, Ernest Seow wrote:
> >>*This message was transferred with a trial version of CommuniGate(tm) Pro*
> >>Well its seems we are in the same boat. What MAP sensor are you running??
> >>VMAP right? I also need to pressure test my system. I need to borrow one
> >>of the VAG pressure testers and turn it up to about 1.5 bar and see what
> >>leaks if there are any. It feels like the vehicle goes into overboost and
> >>cuts. Its like hitting a wall. I really hate it! I am starting to wonder
> >>if the N75 is acting up. I want to try another Mass Air flow, but only
> >>have a new RS2 mass air flow meter for different software. I will have to
> >>run through all the hoses and make sure there are no leaks anywhere now.
> >>When your car cuts out, does it restart right away or do you have to wait?
> >>Regards,
> >>Ernest
> >>
> >>
> >>
> >>
> >>--
> >>No virus found in this incoming message.
> >>Checked by AVG Free Edition.
> >>Version: 7.1.394 / Virus Database: 268.10.4/396 - Release Date: 7/24/2006
> >
> >
> >Bob
> >urS6 for sale: http://chips-ur-s.com/S6.html
> >
> >
>
>
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-- 
Douglas in MN
95.5 Audi S//6 Avant
73 BMW R60/5 mit Toaster Tank