im at the end of my rope with my expedition

[ajchapman3]

so i dont know what else to fix on this truck i have replaced the heads brand new new throttle body new MAF re worked injectors replaced IMRC in back of manifold new cats and re flashed ecu and still runs like crap sometimes it sounds like a like load clucking sounds and rpms drop but i give it gas and the noise goes away and it only does it sometimes and when i reach 2K rpms it feels like its hesitating put if i floor it it picks up...any ideas

 

[Team Zombie]

fuel pump/filter...?

has someone checcked the timing for you?

 

[tonydiv]

Intermittent problems are generally electrical in nature. (generally)

 

[sgtowing]

Intermittent problems are generally electrical in nature. (generally)

I think I would agree. It sounds like a sensor of some sort is acting up.

 

[pheel85]

Crank sensor or timing is wrong also sounds like injectors are garbage

 

[06king]

Do you have any engine check lights or codes?

 

[toms89]

The 3v motors have known issues with cam phasers and their variable valve timing. You may look into that but honestly have no idea based on your desciption.

I hope you not just replacing parts in hopes of hitting the correct one. It should be properly diagnosed and tested. If you are taking it to a shop or dealer it sounds as if they are doing just that (replacing parts in hopes of "fixing it"). I would try another shop.

 

[05Eddie]

Maybe

Mine was doing the same thing around 35-45 mph cutting in and out and make all kinds of noises, then i would punch it and it would smooth out. Turned out to be a bad coil pack on mine. Hope this helps..

05Eddie

 

[fitzy67]

Coil over packs

Mine was doing the same thing around 35-45 mph cutting in and out and make all kinds of noises, then i would punch it and it would smooth out. Turned out to be a bad coil pack on mine. Hope this helps..

05Eddie

I had the same problem with my 2000 Expy. I cleaned the MAS, changed fuel filter, changed TBS and many other things. Mine was throwing codes though. I think it was PO108. I ended up changing the coil over plug packs on one of the cylinders. It ran like new after that. They run about 60$ each. I bought two and ended up using it within the next year. If you end up changing plugs be careful as the Windsor engines have been known to blow out plugs.