oh really? and what precisely was this small, presumably measured, change
in volatge?

>Karl Mullendore <groups@WESTYVENTURES.COM> wrote: I've diagnosed two vans
with same symptoms, both Syncros on the trail,
>after splashing through puddles the OXS CONNECTOR and wire was soaked,
>the [small] change in the voltage reading caused by the moisture track
>caused the ECU to adjust the fuel mixture rich...loss of power and
>stumbling. I'm not a guesser or theorizer, but a experienced mechanic.
>The coolant temp sensor cannot be disconnected and the engine run
normally.
>
>Yes, shorted plug wires, especially the plug caps, will cause the
>symptom too, however weren't these replaced? And it would show up as a
>solid miss if so.
>
>Daniel L. Katz wrote:
>> richard:
>>
>> most obvious possibility is problem on high tension side of ignition,
such
>> as mositure and/or carbon tracks in distributor cap, arcing between
spark
>> plug wires and ground (might see sparks outright, or glow around wires,
at
>> night), or, even if not root cause, fouled plugs.
>>
>> O2 sensor very unlikely here, and it can be temporarily disconnected in
>> any case to eliminate possibility. ditto temp sensor. O2 sensor and,
>> though to a much lesser extent, temp sensor, are high impedence, low
>> current devices, so in this context a little contact resistance is
>> irrelevant.
>>
>> dan
>>
>>