Hello, my 94 Ranger with 4.0 engine is skipping and lacking power until it gets warmed up. It was lacking power this morning and all of a sudden, it got a burst of energy and got power back. Then it started bucking again and pulled off the road, it was idling fine but would not rev up when I press the gas pedal. I shut it off for a minute or two and restarted and drove off. It did this two or three times before I got it back home. I did replace the battery because advance auto check showed that it needed replaced. Any help would be greatly appreciated.
Thank you, Randy

 

Have you had the alternator checked?

 

No I have not had it checked but I can get it checked out. Cleaned MAF sensor which had it running better for a day or so but it is back to bogging.

 

So, the problem is a lack of power? In other words, the engine can't make enough power to move it, or is it stalling and not restarting.
If it's a driveability concern, you could possibly have an autozone like entity scan the codes; I'm sure it will have some, and this could possilby give us a better direction.
One other thing: this is EEC-IV, which was an older fuel injection system. You might have to call around to see who could do it; most everything made since 1996 is the newer fuel injection, and is slightly easier to test.

 

Thank you for the help, alternator and battery is fine. I did replace tps and it appeared to fix it. I guess the voltage gauge has a short in it, it's charging fine. Thank you all again.

 

cats clogged? remove the pre cat 02 sensors and drive it. if the power returns; that's the problem.
just re-read your first post. if it goes away when warm, its not cats.