P0171 & p0012 5.4
I have a 2005 SCREW 4x4 5.4 132k.
Idles rough after warming up & diesels
Will shake really bad in lower RPMs, seems to go away above 2200
Previously had P0022, replaced solenoid (no improvement) and then P0021 came up (plan to change solenoid tonight, but i dont have high hope), Always getting misfires. This truck has been giving me the run around for weeks now and i'm really losing it. Any help/tips/ideas would be appreciated. Here is a list of work done/parts replaced...
8 spark plugs (motorcraft)
oil&filter(motorcraft full synthetic)
Rislone engine treatment
drivers head (i damaged the old trying to get #8 plug out)
Fuel additive to clean injectors (no improvement)
Timing CVR set
I plan to check for vacuum leaks, fpdm (visual inspection), change 2nd VCT, pull oil pan check screen on puller tube. If none of that i plan to move on to pulling the covers off and checking phasers.
Also, haven't driven the truck in about 10 days, drove it last night and it ran like crap from start, shakes bad enough it locks up my seatbelt. Way under powered. Thanks again for any help.