i have a 1999 audi 1.8T the engine light went on. I have a VAG(cheap one)
and the code came up with
17544 02/02 can someone shed some light on what this mean? thanks

On Thu, 05 Oct 2006 00:46:10 GMT, "chewb40" <afabrig (AT) shaw (DOT) ca> wrote:


SAE P1136 VAG 17544 MIL: 2 Dcy

Long Term Fuel Trim Add.
Fuel, Bank1 System too Lean.

Check intake air system for leaks ("false air")
Check HO2S -G39- and O2S control
Check Mass Air Flow (MAF) Sensor -G70-
Check fuel pressure regulator and residual fuel pressure
Check fuel injectors; Output Diagnostic Test Mode (DTM)

If you can't find any air leaks, and you're on your original MAF, check the
adaptation values for the MAF and look for adaptation outside of allowed
range. MAF failures are not uncommon...

Cheers

/daytripper
'00 s4 6spd

sorry for such a dump question but where the the MAF located. is it easy to
replace?
"daytripper" <day_trippr (AT) REMOVEyahoo (DOT) com> wrote

On Thu, 05 Oct 2006 01:25:27 GMT, "chewb40" <afabrig (AT) shaw (DOT) ca> wrote:

Look at this image:

http://home.comcast.net/~day_trippr/...r/1p8l_maf.gif

The MAF is item 7 in this figure. It is located in the upper air cleaner
housing. It shouldn't be physically difficult to remove and replace, but
you'll need to run an adaptation cycle on it, which your tool may not be
capable of doing...

/daytripper
'00 s4 6spd

On Wed, 04 Oct 2006 21:55:12 -0400, daytripper <day_trippr (AT) REMOVEyahoo (DOT) com>
wrote:

fwiw, I put a close-up diagram of the MAF location here:

http://home.comcast.net/~day_trippr/...af_closeup.gif

The items shown are as follows:

1- wastegate bypass regulator valve -N75-
2- Evaporative Emissions (EVAP) purge regulator valve -N80-
3- power output stage -N122-
4- Mass Air Flow (MAF) sensor -G70-

You'll need to remove the air cleaner housing to extract the MAF. This means
you'll likely have to disconnect the above four items and pull the hoses off
the housing to remove it.

/daytripper
'00 s4 6spd

thanks but if i dont have the adaptation tool should i just bring it to a
mechanic
or this is something i can purchase?
"daytripper" <day_trippr (AT) REMOVEyahoo (DOT) com> wrote

On Thu, 05 Oct 2006 02:04:39 GMT, "chewb40" <afabrig (AT) shaw (DOT) ca> wrote:

By "tool" I am referring to the diagnostic scan tool. I use VAG-COM, a
mainline dealer uses the official Audi/VW tool (1551, 1552, and others).
These tools are capable of performing adaptation cycles, coding units to
vehicles, clearing DTCs, setting readiness bits, etc, as well as diagnosing
problems.

The actual source of this particular problem can very likely be determined
with proper use of a capable scan tool. I flagged the MAF because they do
fail, more frequently than the other items on the potential list of indictees.
But I wouldn't simply replace it, because the problem may well not be the MAF.

I would let a qualified mainline service department work on this one...

/daytripper
'00 s4 6spd

from your previous diagnostic maybe i should just take it to a mechanic just
to make sure it's more than the MAF is the problem. i know its going to cost
me more money
but i have no way of checking if there's any air leaks..etc

"daytripper" <day_trippr (AT) REMOVEyahoo (DOT) com> wrote

i agree...thanks for your help and i will let you know what the problem
is...
"daytripper" <day_trippr (AT) REMOVEyahoo (DOT) com> wrote

i took it to the mechanic and they mentioned that they need to smoke it to
find out where the leak is..hopefully this is not going to cost me a lot of
money
"chewb40" <afabrig (AT) shaw (DOT) ca> wrote