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Old 11-23-2021, 08:43 PM   #6
bobxyz
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Join Date: Aug 2014
Location: Boulder CO
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Have you checked the plug wires and plugs? Do the plugs look equally awful?

You can still find the TP31903/1 Regina greenbook (partial copy) via the Internet Wayback Machine (e.g. link)

Some of the sensor measurements, especially if measured from the Regina connector, would help rule out bad sensors/wiring.
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