Sparkey54

Hey dudes, anybody else experienced problems with an 02 5.4?
I replaced the fuel filter thinking that was it, but it didnt fix my problem, iv'e tried injector treatments and i'm at a loss. any suggestions?

Ty

what is wrong with it?

Sparkey54

It's running real rough, feels like injection problems, i'm changing my spark plugs tomorrow.

it doesn't like to go into overdrive from 3rd when i punch it, doesn't do good up hill, kinda boggs out and runs real low rpms

NGM

Check engine light on??? Sounds like some of the fine Ford coils have gone bad.

Sparkey54

Nope, no engine light.
It's kinda an on and off sorta thing too.
It loves to act up when a dudebro in his mustang gt pulls up and wants to go...

would switching from 93 to 81 back to 93 octane cause any problems?

NGM

No that shouldnt affect it. Hmmm I would check for codes anyway. Also find out if someone has the new Snap-On scanner It gives a misfire counter for Fords. See if its registering as a misfire. When was your last tuneup? Is there any oil or water in the spark plug holes? The 5.4 had a problem with the heater hoses leaking water into the plug holes causing misfires.

Sparkey54

Thanks bro, i'll check that out.
I took it to Advanced and they plugged it up but it didnt read anything.
But on my hypertech programmer its reading 2 problems, unabling me to modify it. but i dont want to clear them yet until i know what they are.

Sparkey54

just went out and bought bosch platinum 2 plugs.
gotta wait untill she cools down, then ill see what happens

NGM

Noooooooo!!!!
Take those back and get Motorcraft or Autolites. Bosch Plats SUCK. Don't waste your time with them.

Ty

^x2^

I have herd that those plugs are only good for paperweights...