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Thanks as always, Paul (and anyone else).
Decided to invest in a new digital volt meter (Klein tools MM200) that has a duty cycle dwell and % function. Jumpered the FP relay socket at 30 and 87a (key at on) and checked the 3 pin test connector in the bay. The green and while lead pin checked in at a steady 50%. As it was 75 degrees F at the time, I checked the 59 degree F temp switch for open state by using a continuity test light on the disconnected tab (correct test ?) and there was no light as expected. I also verified my cold control fuel pressure at this time was steady at 2.2 bar.
I then started the motor (with some difficulty, but it did idle). The control pressure stayed at the 2.2 bar reading until jumping quickly to around 3bar after around 40 seconds and stayed there throughout the next 10 minutes of idling/warmup.
When the temp (at the left chainbox cover) was around 160 degrees and the motor still idling, I disconnected the 02 sensor connection and tested the duty cycle again and it was still pegged at 50%. I also (unlike last test) disconnected the 02 sensor connector from the sensor itself and put my new dvm to the sensor lead itself. Nothing .... no voltage at all. I checked on another circuit to be sure that my meter was functioning correctly and it was. The wires seem well connected to the actual sensor, and it was new 2,000 miles ago so what gives ?
I am tempted to remove and replace the sensor, but I am not sure if there is a good way to test the thing (and repair ?) first. Also, what sensor is the best one to replace it with (brand, wide or narrow band etc.) ?
At least I am making some progress ....
Best,
Bill
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