wrote:
> Further tests;
>
> After disconnecting the negative battery terminal for 30 secs, the
> codes seem to be reset. The diagnostic codes are 11111111111111111...
>
> The behavior at the exhaust pipe/oxygen sensor is the same - an initial
> reading of 0-100Mv and no exhaust pipe smoke rising to 850-950Mv with
> smoking.
>
> Disconnecting the oxygen sensor does not change these symptoms and does
> not change the diagnostic code which is still 11111111... No overall
> engine warning light comes on.
>
> Why does disconnection of the oxygen sensor not change the diagnostic?
>
> Thanks for any ideas.
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Put a new PCM in the car.



~:~
MarshMonster
~:~