brittcrowell

So I was looking for a new way home tonight on some back roads and had to come to a perty quick stop at a blind stop sign. All of a sudden things seemed a little quiet. Yep tach at 0! WTF!
This is the second time this has happened. First was about two weeks ago at a quick stop and I tried a quick go, and had no engine.
At the next stop sign tonight I notice a bit of hesiation and the RMP droped to about 400.
I know I need to replace the valve cover gaskets pertt bad, could this have something to do with it? I know my old turbos really didn't like any engine air leaks.
Also I'm getting this code from VAG-COM on the tranny:
Address 02: Auto Trans
Controller: 4D0 927 156 AN
Component: AG5 01L 4.2l4V USA D06
Coding: 00002
Shop #: WSC 00000
1 Fault Found:
17087 - Brake Switch B Circuit Malfunction
P0703 - 35-00 - -


And yesterday I got a check engine light with this error from the engine:

Address 01: Engine
Controller: 4D0 907 557 D
Component: 4.2L V8/4V MOTR AT D05
Coding: 01273
Shop #: WSC 00000
5 Faults Found:
18010 - Power Supply Terminal 30: Voltage too Low
P1602 - 35-10 - - - Intermittent
17537 - Shareware Version. To Decode all DTCs
P1129 - 35-10 - Please Register/Activate - Intermittent
17535 - Shareware Version. To Decode all DTCs
P1127 - 35-10 - Please Register/Activate - Intermittent
17546 - Fuel Trim: Bank 2 (Add): System too Lean
P1138 - 35-10 - - - Intermittent
17544 - Shareware Version. To Decode all DTCs
P1136 - 35-10 - Please Register/Activate - Intermittent
Readiness: N/A


I have a registered version of Vag-Com on the way and a Bently CD. But any other help would be nice.

Britt

skiracer

The others are:
17537: Long Term Fuel Trim mult., Bank2 System too rich
17535: Long Term Fuel Trim mult., Bank1 System too rich
17546: Long Term Fuel Trim Add. Fuel, Bank2 System too Lean
17544: Long Term Fuel Trim Add. Fuel, Bank1 System too Lean

All of these DTCs have the same troubleshooting recommendations:

Carry out road test (fuel in engine oil)
Check fuel pressure
Check air mass sensor
Check oxygen sensor before catalytic converter
Check oxygen sensor behind catalytic converter
Check EVAP canister valve 1

My A8 has never shown these symptoms, so I don't have any good recommendations.

KaMaKaZieP -ALUMIN8-

I honestly think this is related to the transmission not disengaging properly. I have no check engine lights tho. It almost feels like the car stalled like i was driving a stick and forgot to push in the clutch when stopped.

tozoM8

It can be the pressure regulator valve or one of the mechanical valve that the PRv controls. Throw a bottle of Lube guard in the tranny to fee up the valves.

brittcrowell

Great, I got an over-priced Chevy!