1998 Ford Exploer 2wd

[Jeffbutterworth]

Hello my name is Jeff, I have a 98 Ford Explorer 2 Wd 4.0 sohc that has really got me stumped. It starts and idles fine, I can drive it down the road, once the motor is warm and u push the gas up to at about 2000 RPMs it starts to spit and sputter and almost die. I can let off and it smoothes out , if I just barely push the gas it will go (doubt 20mph or less) but any harder it starts doing the problem again. I have installed new fuel injectors, fuel filter, air filter, two new vacuum lines, feedback sensor, cleaned the maf sensor, spark plugs , and still none of that a helped the problem at all. Looking for any and all advice! I don't know what I can try next! Please help!

 

[colintrax]

Have you checked the fuel pressure? If so what is it? Have you checked the cats?
You can get a fuel pressure gauge for cheap, I believe autozone loans them out as well. To check your cats, drive the truck and then see if they're glowing red. A good muffler shop can also hook up an air pressure gauge to the exhaust before the cats and see if they're clogged. Cost me $20

 

[colintrax]

Btw, what part of Alabama you live in?