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Old 09-01-2014, 09:36 AM   #7
John Nechiporchik
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Join Date: Mar 2007
Location: Grosse Ile Mi.
Posts: 316
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Default Re: Any Wideband o2 that records?

Bobby, Check the wiring. It sounds like there is a ground issue . I'm not sure if there is a specific circuit for the O2 ground, but the intermittent scenario you described would lead me in that direction.
These Accel loggers are very sensitive to proper grounding. The overall ground for the system (box) should be isolated and not stacked with any other ground wires.
When I had issues with intermittent starts with my calmap unit, I was advised to run the ground all the way back to the negative on the battery. It solved my problem.
These electrical gremlins are a pain to nail down.

John
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