Wonder why the car was cutting out intermittently?
(These grounds are for the computers and sensors)

 

My 928S cutted out itermittently because of a faulty distributor cap. There was bad connection to the center of the rotor arm.

 

That's downright nasty there.

 

That may or may not be the problem, it sure isn't helping any.

Time to get intimate with a wire brush.

 

After some of the weird behavior I have seen fixed by cleaning the grounds, I believe there may be a good case to prove global warming is caused by bad 928 grounds.

 

Don't forget the ground strap.

 

Cutting out only "under load" or at any rpm?

Regardless that ground needs a good cleaning.

My 89 S4 ran nice and smooth at low RPM. I could not see any "fire flies" under the hood in the dark. ( Looking for arcing plug wires) BUT under load at higher RPM the car ran like a lawn mower. Changed out the plug wires and no problem from then on.