00561 and low boost

[twoqu]

Try the output test through Vagcom on the ISV. If you can hear it clanging all is well! If it does not clang it might be jammed leading to the reduced idle/ign figures.

[sjw185]

Try the output test through Vagcom on the ISV. If you can hear it clanging all is well! If it does not clang it might be jammed leading to the reduced idle/ign figures.

ISV working ok with output test.

[sjw185]

Going by the factory info there are a few odd readings.
The specification for field 1 in 000 is 184-215 (85-105C). You have 192 which is higher than the 85.4C recorded.
The specification for field 3 in 000 is 76-84 (760-840PRM). You have 72 which is 720RPM recorded on the other group.
The specification for field 10 is 35-37 (8-12 BTDC). You have 034 which is less than 8 BTDC but 10.5 BTDC is recorded in the other group.
Assuming that the fan was not running, you seem to have a lower idle and ign angle then specified. Not sure how accurate the coolant sensor is but presumably the readings should match each other in the various groups!

Just been thinking I changed the timing belt last year do you think this could have any bearing on what is happening above?

where do I get the factory info that applys to the measuring blocks?

cheers

steve

[UrS4boy]

Consolidated Cam and Crank Pulley and Flywheel Timing Mark photos and diagrams

Just been thinking I changed the timing belt last year do you think this could have any bearing on what is happening above?

There would definitely be issues if you either timed the cam and crank incorrectly or you did it properly and subsequently the belt slipped a few cogs. You might want to review this:

http://forums.quattroworld.com/s4s6/msgs/136943.phtml

[sjw185]

There would definitely be issues if you either timed the cam and crank incorrectly or you did it properly and subsequently the belt slipped a few cogs. You might want to review this:

http://forums.quattroworld.com/s4s6/msgs/136943.phtml

Thanks

I remember spending a lot of time checking the marks.
the one on the gearbox is just ready to disappear when it's in the right place.
Just think she would be running poorly if she jumped a few teeth.

[Drummer87]

Hey Steve I had that code and now it's gone. Hope this helps

[LVrainman]

I got this same fault code on my avant. However I do not have any boost issues.

00561 - Mixture Adaptation
13-00 -- Adaptation Limit (Mul) Not Reached

It boosts 1-1.1 bar as a standard car should. After reading all the wise words on this thread I came to conclusion that lambda may be doing the trick with adjusting the mixture too rich. I changed the lambda to new bosch around ~2007 when I bought the car and had problems whith exhaust gas check during annual inspections (I think it was too high HC value). Does it mean that my exhaust manifold may be cracked up and sucks in extra air in the exhaust gases which makes the lambda to adjust richer fuel mixture, or is it something else?


any related comments are welcome!

[prj]

Do a boost leak test first.

[LVrainman]

OK I'll give it a try

[LVrainman]

Well, did a boost leak test today together with a friend of mine for first time on my life. We tested from after MAF to where the rubber pipe is connected to the metal pipe which goes round the head. Air pressure in the system was raising, but was not holding the pressure when we stopped blowing in air with air compressor. The funny thing is that we could not hear any air leaking noises (like pssssss), however the system lost pressure very fast after we stopped blowing in air. After that i tested the car on road, it was boosting as previous ~1-1.1 bar overboost..

[prj]

This means you have a leak if it loses pressure very fast. And if you can not hear it, it is a very big leak.

You need to disconnect the ventilation (metal pipe to head) and block it in the MAF-turbo hose, but leave it open to atmosphere from the metal pipe.

[LVrainman]

I am not sure i understand of what I shoud do...

I pressure tested from connection Nr1 to connection Nr2.



P.S. pic is not mine. found it online for ilustrative purposes.