Hi all.

Under these conditions:

- grounds between engine and frame cleaned and ok, new braided strap
between engine and frame
- battery negative clamp dis-connected, ECU dis-connected
- VOM probe to new braided engine ground strap or various points on engine
metal.
- big brown ground wire in ECU harness re-connected to bare frame metal
near ECU.   (this made no difference to engine performance)

I should see continuity between pin 4 of AFM plug, ground wire of temp II
sensor, ground of throttle valve (enrichment) switch, pin 6 of ECU, and
engine metal or frame correct?

I don't. Measuring between pin 6 of ECU harness and new ground point near
ECU, I see a huge resistance or infinite Ohms.

Re-connecting battery ground should make no difference correct?

Engine runs "ok" so what am I misunderstanding or doing wrong?

I have not inspected ground strap between transmission mount and body, but
wouldn't a clean ground at ECU, and clean grounds in engine bay, suffice
for the above tests?

I have checked with 2 different VOM's.

Neil.

--
Neil n

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