Quote:
Originally Posted by Stl-986
well, can't get the sensor out, but there is a small bolt right below #2 cylinder that was happy to come out. Not sure if that hole is for all cylinders or just #2, but here is a new chart. Also rear O2 re-installed.
I guess the next thing would be to have both plugs where I can remove 1, graph it, then reinstall, then remove the other & graph it, then re-install. I didn't graph it when I had the rear installed cause I was still seeing some misfires but not like in the picture above. |
If you have an O2 sensor out or a cat off.
Try another Vacuum test.
See if it is the same as yesterday when the idle reading was dropping.
See what happens when you hold RPM at 2000. Or 3000 if you can't hold 2000
Look far any changes from the other times you vacuum tested.
Recording readings and action of the needle each time you test could be handy while your trying to fix this issue. Could show improvements and help point a direction
