P0022- That code right there is the actual problem. The timing is off and I'm going to suspect a minor problem with the CAM PHASER. See our engines are able to have VCT/VVT whatever you wanna call it through these things called cam phasers. They allow the cams and valves to run independent of one another by retarding them (changing degrees). When these parts begin to fail you will begin having timing issues which lead to misfires, rough idle, and decreased power. Also you mentioned that this only occurs on the highway or when the engine is warm. These phasers only activate when the engine begins to get warm or when the desire for horsepower and economy is necessary. That's just my .02 cents and I'm not a master mechanic, but instead of throwing random ideas at the engine, take the EVIDENCE pointing towards the mechanical failure. Also wanted to point out that the phasers are a common problem with these engines during 04-05 times. It was believed to be fixed during the 06 models maybe 07 I'm honestly unsure exactly. There are several TSBs out there explaining the concern of these phasers. Both codes lead to the same bank meaning you need to look at Bank 2 thoroughly before jumping the gun on the new engine suggestion.
1998 F-150 4.6L V8... It saved my life, and I will stay loyal to Fords till I die! (Fixed and sold)
2004 F-150 5.4L 3V
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Last edited by BolletuH; 04-14-2011 at 07:08 PM.