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Hi folks, thanks for the inputs.
The new wires solved it ! Yay. In love again.
Interestingly, I did not see any sparks initially after several checks in the garage in the dark, until finally spraying somewhat more generously some water mist along the wires - then finally I did see very faint intermittent sparks in the area where the wires run around the top of the fan shroud. :-)
Just for fun, here are some other steps I took prior to detecting and ordering the new wires:
- checked the AFM voltage output consistency using the 9v battery test per the944.com info thread; the process turned out to be quite simple and not very time consuming at all. Was all ok. I didn't open the afm, or clean or move the arm. I simply observed very consistent voltage increase with no drops, when opening the flap verrrryyy gradually.
- checked the O2 sensor voltage output, and it was also ok, ranged approx .1v to .8v per the related threads. The only tricky step was contacting the voltage meter electrodes to the o2 plug. Was glad it determine that it seemed fine.
- Found a vacuum line hanging behind the airbox area, which had disconnected from the y connector behind throttle body. Reconnected that, but did not notice any running change really.
Anyhow, problem solved in the end, thanks Tony.
Brian
'87 Carrera
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