I have a 2004 F250 with 5.4 Triton engine. It stalls when tapping on Power steering reservoir! This is the oddest thing I've ever seen! I did not get time to look into it today but will sure do so tomorrow. For now I wanted to see if anyone has experienced this issue and what the problem was.

 

Patient:
"Hey Doc, it hurts when I do this!" (does the thing).
Doctor:
"Then don't do that.
That will be $500".

 

Some wire bunch is being affected...Connector etc