Golf keeps stalling, mechanics can't find problem

I have a 96 Golf, 2.0L gas engine, that occasionally loses power and stalls,
usually in stop & go traffic. It is throwing the code P0134, which is for
an oxygen sensor not responding.

Both O2 sensors have been replaced twice in the past year. The car has
received new wires, plugs, distributor cap, etc. in recent years.

The first mechanic kept changing the O2 sensors. The second mechanic tried
a new Mass Air Flow sensor, but same result. He tested the O2 sensors and
found them to be fine. He found good fuel pressure. He indicated that the
computer was getting good inputs but providing bad outputs. So he
recommended changing the computer. We had him put a used computer in the
car. It worked fine for a day or two, but the car is once again behaving
the same.

Has anyone else had this problem? What are the mechanics missing? '

Thanks!

Might be a bad crankshaft position sensor.
Bad ign switch maybe. Do you keep a lot of keys with your ign key?
I have changed a lot of bad/defective/weak ign coils on the 2.0l engines but
usually the power is weak and the engine won't restart easily and act good.

BTW The ross-tech.com vag-com tool will probably give you a little more
information than just P0134.
--
later,
dave
(One out of many daves)

"Chris Wilkinson" wrote in message

>I have a 96 Golf, 2.0L gas engine, that occasionally loses power and
>stalls, usually in stop & go traffic. It is throwing the code P0134, which
>is for an oxygen sensor not responding.
>
> Both O2 sensors have been replaced twice in the past year. The car has
> received new wires, plugs, distributor cap, etc. in recent years.
>
> The first mechanic kept changing the O2 sensors. The second mechanic
> tried a new Mass Air Flow sensor, but same result. He tested the O2
> sensors and found them to be fine. He found good fuel pressure. He
> indicated that the computer was getting good inputs but providing bad
> outputs. So he recommended changing the computer. We had him put a used
> computer in the car. It worked fine for a day or two, but the car is once
> again behaving the same.
>
> Has anyone else had this problem? What are the mechanics missing? '
>
> Thanks!
>