At 11:52 PM 4/2/2011, HotelWestfalia wrote:
>Hi to all,
>This is a '91 model, 2.1L Vanagon, gas, 2wd,
>I am using my Digitool and with a new Oxygen sensor I'm getting 10.6
>volts on the "Oxygen sensor ground" reading.  It started off with
>(minus) -0.2, and it supposed to be about 0 (zero), which was fine,
>then very soon it jumped to 10.6 and staying there.  Before I
>installed the new sensor, the old one was doing the same.

You've got a ground problem on pin 19 of the ECU harness.  Find where
the along the path of that wire the voltage goes to ground and that's
where the problem is.

Yrs,
David