2006 f150 misfire 5.4

this trk has me messed up; sorry i'm going by memory for these codes P0345 P0349; something about cmp sensor 2; i can't even find a cmp sensor pid on my modis; this trk has a bad mis; has code p1000 also; it has a cmp sensor on the front of each head; i omh both sensors; they r the same; checked both with scope; they are the same; i can't figure out a way to hook up low amp probe to view coil firings; went to mode 6 and it dosen't show 8 cyl. there is $80 $81 $82 $83 $84; thats it, i don't understand this, tried global obd; found nothing as far as misfires; short of back probing each coil i don't know what to do next; thanks

cylinder contribution test?? the 2006 should have a relative compression test and injector flow test in the scantool and takes about 5 minutes to do both.

also there is fuse 33 a 15 amp you can look at the coils but there are more than coils on that fuse so youll see other things to

have you checked the variable valve timing for sticky solenoids a stuck solenoid will cause a vehicle to run horrible

did relative compression test;0.0-0.2 on all

how do I do that? I know the vct on the scantool drops out now and then; but where are the solenoids? checked both cam sensors with scope but that was only in shop and not under load; they both look the same; there r 3 humps then a space then 3 and space; I don't think this is cool either ? but they both look exactly the same

did you scope the coils yet?

P1000 means it hasn't finished all drive cycles since the codes were cleared so you may have more pop up as you go but pretty much dismiss that for now.
We don't get those motors but google tells me it's a circuit code so you're looking for a signal not getting to the ecu or similar rather than whether it's all in time. Can you confirm the code description for me?


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yes P0345 P0349; the signal is dropping out on both sides; and truck was low on oil; but I don't know where to go next; thank you

only 5 & 6 ; I was trying to find out how to look at all of them at same time; I did these 2 individually ; will get truck back tomorrow; thank you

Low oil can impact vvt but probably not in this way.

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I WOULD LIKE TO THANK EVERYONE FOR THEIR HELP; I guess what messed me up was I couldn't view misfire in mode 6; had to go to each cyl one at a time to view miss. and sometimes it wouldn't show up; I found that if I viewed misfire for this drive cycle I would give me a specific cyl. anyway ; this thing had 3 cylinders misfiring ; and when I went to change plugs I coarse one broke off in cyl. but its fixed and outta hear; thanks again

Change the oil.. A lot of the times the VCT's will act up if the oil is on the low pressure side... So a comprimised viscosity or the pump not getting it's mouth deep enough into the sump will cause lack of pressure at the sensor and cause all sorts of crazy issues