[NZE90]

Originally Posted by WheelNut2

I only checked the ESS for oil contamination. I haven't had a look at the cam position sensors at all.

Any suggestions for diagnosing ESS or CPS at all? Is there a specific parameter in ISTA I can use to investigate them? Should I get an oscilloscope, back pin them and check out the wave form? I really don't want to just fire the parts cannon at this problem.

ISTA can do that too.