2004 F150 5.4 Spark Plug Replacement
#32
Senior Member
Originally Posted by ellis4pa
I believe 2007 and newer have the one piece plugs. It was the '04 and '05 that got the two piece plugs.
#34
Senior Member
Originally Posted by weisz13
Ok now another question. I know there is a lot of opinions out there but what plugs do you recommend? Price per plug is no big deal.
#35
2004 F150 Plug Replacement
I just replaced the transmission on my 2004 F150 (104K miles), and as soon as I drove out of the service pit, began running mushy. Had diagnostic done on it, thought they had added transmission fluid somehow--nope, bad plug/bad coil--Ford wanted $1400 to replace plugs/ignition coil and run "magic" fluid through fuel system. Told them to replace the bad plug/coil--I'll figure out the rest--trade in is about 8-9K--I'll have 6K in repairs at the rate I'm going.
#36
Senior Member
I just replaced the transmission on my 2004 F150 (104K miles), and as soon as I drove out of the service pit, began running mushy. Had diagnostic done on it, thought they had added transmission fluid somehow--nope, bad plug/bad coil--Ford wanted $1400 to replace plugs/ignition coil and run "magic" fluid through fuel system. Told them to replace the bad plug/coil--I'll figure out the rest--trade in is about 8-9K--I'll have 6K in repairs at the rate I'm going.