Hey, I have a 1994 ranger with the 2.3 motor. No power steering or AC. Just did a timing belt on it because it snapped. Truck ran awesome before timing belt. So I replaced the belt and it ran great for two days, one day I was running it pretty hard and I was coming home from Taco bell and my check engine light came on. I pulled over, checked fluids, everything was good. Fired it up, started driving and it started bucking and jerking like crazy. No power at all. Took it home, let it sit. Next morning, we started it and it ran awesome until it warmed up. As soon as it warms up it loses spark on 2 cylinders and runs like crap. Any idea on what the problem is?! Thanks!

 

Losing spark is either the coil or ICM.

I doubt the changing of timing belt and current issue are related, just '94 parts wearing out.

I would read the history codes to get more of an idea of the problem

Good how-to here:
EEC IV Self Test – Ford Fuel Injection and EEC IV Electronic Engine Control – EEC 4 OBD Trouble Codes –

 

My truck generated a pending p0320, can someone help?

 

Looks like the place to start is looking at the crank position sensor/wiring.

https://www.ranger-forums.com/genera...ooting-130402/