'91 200 20V TQ Dies on Freeway - Now Won't Start
vegener at post7.tele.dk
Sun Dec 14 00:41:15 PST 2008
So many errors at the same time - guess a ground connection.
Check the 2 ones at the IM
----- Original Message -----
From: "Michael Palatas" <mpalat at gmail.com>
To: <200q20v at audifans.com>
Sent: Sunday, December 14, 2008 1:49 AM
Subject: '91 200 20V TQ Dies on Freeway - Now Won't Start
> It was a dark and stormy night.... My "4 month owned", IA Stage III
> chipped, '91 200 20V TQ was running fine on the freeway at 70mph yesterday
> when it started to shudder a bit and lose speed. Pressed harder on the
> accelerator - no response. Had some slight, unusual vibration you could
> feel in the steering wheel - almost like the engine misfiring - as it
> coasted down to a stop. Electrical indications normal. Wouldn't restart.
> Checked the fuel pump fuse - OK - so flatbed towed it home ($130).
> Tried to restart. Strong crank, but rough/unusual vibration as the engine
> turned. Checked the following:
> Fuel Pump Relay OK
> 12V at fuel pump connector
> Fuel pump running during crank.
> Pressure/fuel at fuel filter outlet
> Distributor turns when cranked (but did find the wide tipped rotor - will
> replace soonest).
> Good spark on high tension wire.
> Hooked up VAGCOM, cranked for about 5 seconds, and had the following code
> readouts (and only these):
> "00519 - IM Pressure Sensor (G71)
> 06-00 : Signal too high
> 00523 - Intake Air Temperature Sensor (G42)
> 30-10 : Open or Short to Plus / Intermittent
> 65535 - Internal Control Module Memory Error
> 00537 - Lambda (Oxygen Sensor) Regulation
> 08-10 : Control Limit Surpassed / Intermittent
> 00525 - Oxygen Sensor (G39)
> 29-00 : Short to ground
> 00513 - Engine Speed Sensor (G28)
> 27-10 : Implausible Signal / Intermittent
> Readiness: N/A"
> Any ideas/suggestions? None of the codes sound too ominous to me, but I
> not a code expert. Not sure why I would have the Oxygen Sensor faults -
> just put in a new one about 2 months ago - car ran fine after that
> replacement till now.
> Mike in North Hollywood, CA
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