BACKGROUND: I recently bought a 05 f150 with 5.4 3v and 195k miles needing some work. Ran great, just had a code for timing over retarded. Originally it had a cracked timing cover, so i took it off to replace and found broken guides and bad tensioners on timing. I installed new guides, chains, and tensioners, and cleaned phasers, and put back together only to find it ran terrible and had a phaser rattle. I then went in and installed phaser locks, which took care rattle but not the running issues. I can not figure it out.

ISSUES: My issues almost mirror what is said in this thread here, but this issue was never solved.

https://www.ford-trucks.com/forums/9...06-5-4-3v.html

My issue is when started cold it starts right up, idles ok, runs ok, although a bit sluggish. Once its warm it stalls at idle, shudders when giving throttle in overdrive, and if you kick it down it will continually backfire, and slowly accelerate... it kicks down but acts like its only getting 1/8 throttle, just kind of hangs at the same rpm and slowly climbs in rpm. Sometimes it wont backfire as much, and sometimes the check engine light flashes. After it stalls at idle and you start it back up it sounds like it shudders/backfires for a split second then starts.

It is throwing many engine codes, but most are from the phaser locks. Throws code for timing over advanced on each bank (phaser locks lock them fully advanced), cam timing codes for each bank, and then a code that doesnt have to do with the timing, P2106. I am going to run some live diagnostics on it today and report back but i am fully at a loss.

 

Did you get a tuner and tune out the csm phasers?

 

No, I havent done that yet, my dad had the same truck and did locks and his didn't run like crap until he had it programmed though, it just threw an engine code. I was waiting to get it running good to have it programmed

 

My only thoughts are it's out of time? Replaced chain? Or when installing lockouts or cleaning. Did you use the livernois kit. They have great customer service and great install videos.

 

I used the mmr kit. I looked for the livernois kit but could only find it with the act tuner which I don't need. I found part of my issue, the locking tab on one of the coils was broke so cylinder number 1 was having an misfire. Runs much better now but still backfires sometimes and cuts out under hard acceleration. Thewestie I'll get it programmed in and report back. Thanks for the advice

 

Good luck.