[Gmecm] Still Tracker TBI Problems

[CARL-OTTO RUSTAD]

Duncan!

Be aware when testing the O2 sensor with the multimeter,
so you do not by accident measure the resistance.
Take only voltage readings.
According to some documentation on this, an O2 sensor
can  possibly not like to be treated that way.
I guess you already know that, but anyway....
Regards. Carl.



<Hello folks,in trying to correct high CO and low
<mileage from my wife's 1992 Tracker, I've encountered
<something I didn't expect.  Yesterday, while trying to
<est the O2 sensor with a multimeter (indeciferable
<readings, will try again tonight), I was running the
<can with the O2 disconnected.  It did not trigger the
<MIL! 
 
<Now, the MIL functioned when I disconnected the IAT,
<so I know the light and wiring are good.  How can a
<sensor as important as the O2 sensor NOT trigger the
<light?

<Unfortunately, I was low on time and I didn't try to
<pull a code last night.  Does anyone have an idea why
<the O2 failure would not trigger the MIL?

<Insurance runs out Thursday, so I'm getting desperate
<to find out why it's not running right!  To date, I've
<swapped the ecm, TB, and all sensors except CTS
<(swapping it tonight) with little effect.

<Thanks folks,
<Duncan

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