[V8] power drop outs

[Michele_Deltergo at KeyBank.com]

To clarify, when checking the voltage out put of the signal wire (not 12+
or Neg) I was seeing 3-10V!  Obviously something was/is not right with the
02.  I suppose I can try to run without it to see if when warm the issues
go away.  I could also run without the power leads attached as the 02 will
reach operating temp though it will take more time and then measure output
voltage.  The only way for me to see that kind of high volt output is if
the + from the harness is shorting inside the 02.
I can't imagine what that kind of issues having that level of voltage fed
into the ecu from the 02 lead might cause.  Any usual suspects for MAF area
leaks?
Mile

OK Mike, I'm a little confused by your note...
There are usually three wires on an O2 sensor.  1) Power to the heater
(+12), 2) ground, and 3) Output from the sensor (0 to 1 volt).



If the car doesn't straighten up when the 02 is disconnected, suspect the
temp sensor, MAF, intake air leaks after the MAF, or a leaking injector.

Craig Nicol





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