[s-cars] Check Engine Light etc

[Bruce Mendel]

Aaron,

I am undergoing this same issue right now, I think. Check engine light
flashed and boost was cut back to minimum under full load in fourth gear
while running at track.

I have changed cam position sensor, and checked just about everything, and
the car is not building boost properly and is still flashing the check
engine light for cam position sensor, in spite of tracing the wiring for
same all the way back to the ECU. I even swapped ECUs and same problem.

Let me know if you discover anything, and I'll do same. Good luck!

Bruce

----- Original Message -----
From: "Aaron Taylor" <aaron at sunvalley.net>
To: "Audi - Scars" <s-car-list at audifans.com>
Sent: Thursday, May 02, 2002 12:15 PM
Subject: [s-cars] Check Engine Light etc


> Hi all
> Last night my check engine light on our 1995.5 S6 Avant came on as my
> wife was driving home.
> After dinner I went out for a drive and the light went out.
> Everything seemed fine - no unusual noise or behavoirs - smooth idle.
> I went ahead and checked the fault codes per the instructions on the
> auto tech site.
> I got one fault code  - 2113 (cam position sensor or distributor
> alignment ?)
> I have a few questions -
> 1) If the check engine light comes on but then goes out on its own, does
> this mean the faulty device is intermittent?
>
> 2) Are all fault codes stored regardless weather or not a device is
> currently faulty.  Would a intermittent device produce a fault code
> which would remain stored even if the device is not currently faulty and
> check engine light is off. (As I have only owned this cas a few weeks, I
> am not sure if there were any stored codes from the previous owner)
>
> 3) Should I erase the codes buy removing fuse on ECU and wait and see if
> any codes(s) come up again?  What about "learned ignition timing and
> adaptive fuel mixtures"  - will these reset themselves after a few
> miles?
>
> 4) What are symptoms of code 2113?
>
> 5) This self diagnosis is amazing! Do other modern cars have such a
> system where the owner can trace a fault without fancy equipment or is
> this why we become Audi nuts?
>
> Thanks for all your wisdom
> Aaron - Still learning.......
>
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