---------- Forwarded message --------- From: David Beierl <dbeierl@attglobal.net> Date: Mon, Mar 23, 2020 at 5:26 AM Subject: Re: O2 Sensor problem To: Dennis Haynes <d23haynes57@hotmail.com> Cc: vanagonlist a <vanagon@gerry.vanagon.com>
Rarely will an O2 sensor go over 1 volt so what happens is that even after > the O2 sensor is saturated and reaches its limit the ecu is still trying to > go rich until it sees something. > High voltage signals rich and should drive the ECU lean. However I think the programmers must have anticipated the possibility of heater element leaking to the sensor, because this condition in fact drives the ECU rich just as does a sensor line shorted to ground does. Yrs, d |
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