My 1998 f150 starts up great idles good but when u start to drive it and press the gas it acts like it chokes out and wants to cut off then if finally catches and it starts to go and when u go to slow down and almost stop it cuts off any ideas I check the massive air flow but it's not that

 

I'm glad to be apart of the f150 site I loves my trucks I have a 1998 Ford f150 4x4 and a 2004 Ford f150 4x4 the 2004 has a 6" lift riding on 38" tires it's my baby hope to become good friends with this f150 site thanks y'all I will post pics soon

 

Welcome! I'm going to remove the other thread to eliminate confusion

 

Your 98 should be OBD Complaint and storing codes. I'd have somebody like Autozone read them for free. It could be multiple things, PCV hose if a 5.4, a vacuum leak, throttle position sensor out of range, etc. I assume no mods to the engine?

 

Its a 4.6l the check engine light is not on