MAP and oil pressure failed, crossed out

[jakej]

I don't think he's intentionally trolling. He just didn't get the logic. If you disconnect the alternator, and the problem is still there, the alternator seemingly isn't causing it. But in post #7, you said replace the alternator anyway. That does sound strange.

Bingo, I see where I went off script.

 

[jakej]

Thanks Rhino I have no intention of trolling anybody. I am here to learn as much about the system as possible so I can help the people I support. I don’t think I deserved that comment.

Stevec, MY BAD, very sorry - know you guys 'over the pond' are normally good guys
At post #7 ....see if the 'issue' is still there -IF yes, then "bite the bullet" & install a B&C Alternator - what I (now obviously) meant was to say IF no,
then bite the bullet.......

 

[PH-LRV]

Dear fellows,
to inform you about the progress of my problem, here is the story.
After checking all power connections of the plane, I dismantled the batteries and performed a capacity check. They were both better than 82%.
I made a run-up and switched the alternator on and off to see the development. I realized, there was an improvement in the reactions. Many other guys set their focus on the ground connection to the buss. In my case, the one and only ground buss on the plane was connected via an AWG2 wire and ab AN4 bolt to the engine block.
We measured this connection by a milliohm meter (Bob Nuckolls) and found a resistance much higher than acceptable. We removed the bolt, scratched the surface, used some connectivity grease and washers and reinstalled everything again.
The run-up showed a fully functional engine monitor system, with all parameters with the correct values.

Thanks to anybody for the hints and advices to my problem. I appreciate the assistance within this community.
Best regards from Bavaria
Stephan
PH-LRV

 

[jakej]

Airguy pinNed it down.
PH-LRV - thanks for posting the solution, it should/can help others.