2000 RPM knock

[nacelp]

I've had a bad heater fan generate TF to confuse a ecm, I've had plug wires
do it, and even spark plugs trigger it.  No to mention bad grounds, but
never at such a specific point as you mention.  Your setting records for
weird stuff to happen
Grumpy


> So, its getting into the ECU or originating there.  Tomorrow's project is
> to 'scope all the I/O lines to the ECU.
> Anybody had a similar experience?
> No wiring changes were made at any time during the past few weeks engine
work.
> Thanks - Barry


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