Originally Posted by XfireZ51

Jeff,

Sounds likke you still need to fix that open ground regardless. I would fix that first before installing new ECM and see what happens. Is the O2 ground tied into an ECM ground by any chance?

Originally Posted by XfireZ51

bobby,

So you finally got a cam sensor code?

Originally Posted by XfireZ51

Jeff,

Have you thought of looking at the ECM grounds? Odd that O2 sensor ground would be bad. :confused:

Originally Posted by XfireZ51

Diff MAP registers a constant .6 volts but when he stabs the pedal,voltage goes up and Scdys Open.

Originally Posted by -=Jeff=-

it is not the sensor ground directly.. if you look in the Service manual there is a Ground out of the ECM for the sensor circuit.. I found the ground location, everything is connected, I also found what else goes to that same point. so far everything that goes to that ground point works.. Now that is not to say that the wire is bad, but the is a (S) connection (short) where both ECM O2 Circuit Grounds tie together and then go to the ground point. It is possible, that the leg going to the grounding point broke away at the short.

One step at a time.. going to check this fix this weekend. see if I got anywhere. then move on to the next issue

Originally Posted by XfireZ51

So IOW,you'll check to see if fixing the O2 ground issue is the culprit before swapping ECMs?

Originally Posted by XfireZ51

Also, the Diff MAP sensor readings in the scan were strange. Any chance similar issue is going on there and would the two be related?

Originally Posted by -=Jeff=-

Yes.. check that first

how are they strange?

Again, from what I read in the Service manual they seem to be fine.