There are a number of articles on the new gasoline ruining gas lines and filters unless you add some Stabil once in a while and especially if you let it sit for more than a month.
I'd change my fuel filter first and then run some dry gas through. One thing for sure is to fill the gas to the brim before putting it away for any extended time or you will get moisture in the fuel tank and that's not very good for injectors.

Pap

 

Well today i did plugs and mass air sensor.. 99% better... No missing.. But it does seem the cat is restricting it a bit... Running way better now! Its awsome.. Thank you all

 

I read a LOT of posts on here about which COP's were better so let me save you some time. Some guys have great luck with the Napa one (Echlin - who supposedly makes them ALL) - others didn't. Some guys were happy with MSD's, some weren't. FEW had good luck with the Accels - MOST didn't. Some guys will even swear by the cheapo Ebay COPs.

However, I NEVER read a single complaint on here about the Ford Motorcraft COP's!! Just an FYI, the Motorcraft COP's are $49.95 at Summit Racing. They are $39.95 if you buy at least 8 of them at DieselFilterOnline.com. When I called Summit and asked for a "volume discount" the guy laughed. He did point out, however, that they WILL price match.

I pointed him to that website and he saw the $44.95 price but when I asked him to selected a quantity of 8 he did and saw the $39.95. SCORE!!! Saved $80 and drove to Tallmadge later that day to pick them up!!

Btw, I HOPE you used the Motorcraft Plugs!!! Glad to hear it's running better!!

 

Yes i used motorcraft plugs... But its acting up again. It runs fine at idle just when its under load like going from a stop or at constant speed in overdrive on the highway. Its getting pretty frustrating.. No CEL still... Im assuming most sensors will throw a light.. Fuel pressure reg... Throttle pos... O2... Ect...

 

speedo and abs problem...sensor on rearend. I find that the ford cops are the best to use along with motorcraft plugs. Also every 4th fillup add bottle of sea foam to gas.

 

Well i have a guy coming by today to do a code read and hopefully a live scan to see whats going on...

 

What did you find out LSA ? waiting to hear because I have the same sputtering problem even after replacing the plugs and ALL the cop's ! wth?

 

Well no luck getting the codes read... I replaced the throttle pos sensor. No help. Im replacing all the cops today or tmrw when they arrive. If that doesnt fix it then idk.... I may pull off the throttle body completely and thoroughly clean all the sut and carbon out of it. Its pretty dang dirty... I mean really other than that idk... The only other thing i can think of is faulty fuel pressure reg. Faulty fuel pump. Maybe cracked fuel line letting air bubbles in the system... **** man im stumped....

 

Yeah me to... I had the same problem back in Feb. and took it to the garage and a missfire in #4 came back replaced the cop in #4 and it was fine. Then 3 weeks ago or so it started again so I said screw it and replaced the other 7 and still have the same problem and getting worse. I'm thinking of replacing #4 again and seeing what that does. Isn't there a selonoid on the throttle that can be cleaned? I read it once on here but I can't find that post and how to do it to save my life. I seriously have had enough of this problem and I'm about ready to find a cliff to drive my '02 off of !!!!

 

Haha my auto insurance agent lives next door to me and i keep tellin her be ready to put full coverage on this pos.. It may accidently catch fire soon!!!

 

Maybe injectors? I sure hope not... But thats one more thing..

 

I don't know but I do have full coverage on mine! LMAO! No I love the truck but this sputtering and hesiatation and ruff idle is going to be the death of me or my check book. I don't know about the injectors... ford says they NEVER fail. ha ha

 

MOTOR Magazine Article | MOTOR Information Systems

Its most likely the coils.

I just bought 10 new coils on ebay for this exact problem.

See this thread.
https://www.ford-trucks.com/forums/1...rk-plug-2.html

 

http://www.motor.com/magazine/pdfs/072011_09.pdf

There is the PDF to the article. The screenshots of the diagnostic tools are really nice.

 

My 98 F150 5.4 did the same thing and it turned out to be the coil pack on the #1 cylinder. Had it tuned and everything was ok....