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Old 01-07-2023, 02:42 PM
Frank Reiner Frank Reiner is offline
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Join Date: Feb 2011
Location: Modesto CA
Posts: 4,390
Quote:
Originally Posted by danielh View Post
Today I checked what happens if I unplug the O2 sensor and absolutely nothing changes. So the duty cycle slowly goes up to 92%. In this case the duty cycle should be at fixed 50%.

I will try to figure out why this is happens, but I would appreciate any idea.

Consider that the input signal(s) that change slowly correspond to change in engine, and/or air, temperature. Bridging the temperature sensors will, at the least, fix their values. This is a bit of a long shot, but may indicate something.
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