4.8i Behaving Strangely - Codes

[thesamiest]

Originally Posted by ard

IMO this will turn out to be your issue.

If you had a hard parts failure it would stay failed. A cracked hose/air leak can come and go.

As the crack/leak continues the symptoms become more consistent

I keep brining leaks each time i send it at the shops, they either don't believe the issue to be that simple or have not been testing it properly. I changed the battery a couple of months ago and surprise, they did not register it. I inquired as i felt the new battery was not performing optimally.