donnyhetrick

i just got a 2006 f150 xlt 5.4 on black friday and i am noticing some hesitation between 45-55 mph

BassAckwards

Hmmm odd, right around there is where I notice best accleration if you floor it, because when it throws you down in 1st gear you right in the peak torque curve.

Any Engine Lights or Misfire codes ringing off?

Edit: Are you just barely holding your foot on the gas? .7 is a tall gear ratio so if your torque converter is locked like it should be under light throttle load, that may explain the hesitation you are experiencing.

donnyhetrick

the engine light flashed a cuople of times then went out. my foot is pretty hard in the throttle. under light throttle it almost feels like a hard shift and no lights

donnyhetrick

the truck has 89000 miles my brother inlaw works at a ford garage and he thinks it might be plugs or coil pacs

madeSICC

Most likley the COPs hard to really know which in is bad, even the cpu isnt always right, so its better to change them all at once.

viper801

Mine had the same problem. Ended up being the COPs. I went ahead and changed the plugs when I changed the COPs. My truck run great now.

MHC-F150

Check out this TSB. Had this performed on my truck when I had a similar issue and it fixed my issue.

http://www.ford-trucks.com/tsb/fullt...hp?tsb=06-19-3

donnyhetrick

i m soory for souning like a moron but what are COP's and how much do they usually run$

BassAckwards

COP = Coil Over Plugs I believe and I'm not sure how much they run$

Brett04F150

the price on coils can go from $38-$60. when i did mine i got a set of them.

i went for msd when i did mine.