1994 4.0L acceleration issue

[ThatRanger00]

I have a 1984 Ranger that originally had the 2.8L, but over the last winter, my grandpa and I did a 4.0L swap in it. It's been good for the most part. Little issues here and there. But the other day I was driving it, and mid-drive, it just started cutting out and missing really badly. It got to the point that when I tried to turn around and limp it home, it would completely die and barely want to rev up or accelerate at all. I barely got it limped home, and it's been just sitting since. I am lost on it. I believe it seems to be a fuel issue, but I am not sure. It reminds me of before we took the engine out of the original 1994 truck, when I was driving it down the highway, that little button popped out that cuts fuel flow, but when we did the swap, we just bypassed that, so I know it's not that. The fuel pump and filter are dang near brand new still from when we did the swap, so I assume it's not that. Has a brand new TPS and MAF sensor as well. plugs and wires, and the coil is brand new. I am just lost. I'm not sure if it could be a vacuum leak as well, but I don't know where to start looking for that either. Any help would be much appreciated.

 

[rumblecloud]

Does it idle at all?
If not, try spraying some hot start fluid into the carb or throttle body. If it runs and then stops you have a fuel delivery issue.
Check the fuel pressure.

Also, new does not mean good.

 

[ThatRanger00]

Does it idle at all?
If not, try spraying some hot start fluid into the carb or throttle body. If it runs and then stops you have a fuel delivery issue.
Check the fuel pressure.

Also, new does not mean good.

It idles and runs fine until it gets up to temp. I was thinking about checking fuel pressure so now that you said that I definitely will.

 

[rumblecloud]

While you're at it, check the Coolant Temperature Sensor...lots of vids on how to do that.
And you should probably re-connect the emergency shut-off - unless you never "plan" on getting into an accident.

Please keep us posted on what you find or don't find.