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Subject:1.9 ltr WBX O2 sensor question?
From:T Collins
Date:Mon, 21 Sep 2009 09:21:48 -0400

Hello Folks,

How quickly does the O2 sensor give a signal to the ECU? I notice a split on
the green wire connector to the sensor. I patched it with a new connector. I
noticed that the green wire seem like 2 wires one inside another sheet. Does
that seem familiar?

I am still having problems with what seems to be Vanagon Syndrome. I am
trying to find out why the van will idle fine and smooth for a minute or two
and then miss idle. The timing mark is steady with the split on the case
until a minute or two then it jumps around from the case point and then to
the left (facing the van from the rear) drivers side of the van.

If driven the van still runs like poo, buck and continues to stumble

The idle then becomes ever so erratic. What could make this mark jump like
so?

Spark:
New spark plugs (double checked the gap)
New plug wires
New rotor
New cap
Timed with static light using recomendations on rpm and timing settings.

Air:
Vacuum lines checked with carb cleaner
Little vacuum lines replaced
New air cleaner
New injector seals

Fuel:
New pre pump fuel filter (the square one)
New fuel lines
Pump seems to be humming along

Grounds:
All grounds to the chassis under coil there checked and cleaned.

I am missing something....I just dont know what it is:

Plan:
Replace temp II sensor
Place capasitor on AFM
Check O2 sensor
Re-time (x100)

Thanks,
Tony
--
82 Scirocco "Rodolfo"
85 Vanagon "El Guapo"
90 Fuji Ace

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