Just bought O8 5.4, with 218k miles, knowing it needed cam phasers.
Changed timing chain, cam phasers, guides, tensioners.
Now, No acceleration off the line, noticible miss at idle, in gear.
Scan shows cam position sensor bad. Changed it, and still same reading.

 

Might need to recheck the placement of the chains.

 

hank, thank you for getting right back with me!
The chain and sprocket timing marks appear to be right on. Isn't it strange it only seems to miss at idle?
Is it possible a phaser is defective, and not advancing or retarding correctly?

 

As you know the proper oil and regular oil changes are critical to the longevity of this engine.
Did anyone check the solenoids that control oil to the cam phasers ? They have screens that can be restricted with foreign matter especially with all those miles.