fone_fitty

When i'm driving at lower speeds, around 40-45 mpgs, my truck starts to jerk.. its feels like the road is bumpy but consistently. I've tested this on multiple roads so i know it's not the pavement.. could this be my transmission going out? 05 f150, 5.4 liter .. please help!

bwFX42006

change plugs and cop's, clean MAF & Throttle body, new fuel filter

powerranger262

^ Bingo. Start with the cheap stuff. Maf and TB cleaning and a fuel filter will probably do it. What's the mileage on the truck?

techrep

iTrader: (1)

More like a mis-fire... plugs and COP's when was the last tune-up performed ??

fone_fitty

I'm almost at 125k miles.. had a tune up perfromed about 2 1/2 years ago. Plugs and all..

fone_fitty

thanks btw for the help - am i due for another tune up? I honestly didn't think it had to be done this soon? Again this may be a result of my lack of common sense. I did just have my oil changed.. Ford didn't have anything bad to say as of last week??

techrep

iTrader: (1)

what kind of plugs and all ?? Motorcraft ??

fone_fitty

Not exactly sure : / I mean plugs and ignition coils were replaced. don't know why i put "all"

fone_fitty

Ok i'm going to start with replacing my fuel filter.. then i'l clean out my throttle body.. any suggestions on cleaner i should use while scrubbing? Also, i've never messed with the MAFs.. any suggestions for my first time?

F150_Life

Remove the MAF and just spray some CRC