Help! Engine Stumble

[TheDanMan]

I cannot seem to fix this truck. I have replaced the throttle position sensor and the IAC sensor as well as all new spark plugs and wire wires and it also has a new TFI I checked for fuel pressure and I have 30 psi I also put a new oxygen sensor. I have plugged all of the vacuum leaks I can find and I also have a new MAP sensor. I cannot seem to figure out what is causing this stumbling issue. It happens a lot more when it is cold and this is the worst it has gotten in the video. Most of the time it is just a quick stumble or two when I’m accelerating. Sometimes it happens and sometimes it won’t. This video was taken about an hour and a half in to a two hour drive. So the next day I drove it on the highway a little bit and the problem disappeared, the day after that it came back. It also idles’s just fine and never has trouble starting. Please help I’ll take anything I can get. It’s an 89 Ford Ranger 2.9. Video
https://drive.google.com/file/d/1KIjgTq6_LOfHFpq-0OWU6wYAuKyQtHq-/view?usp=drivesdk

 

[Shran]

Your video does not allow anyone to view it.

We'll try to help out as best we can, there are a lot of factors involved in issues like that. Maybe a loose ground or something.

I also removed your duplicate thread in the general discussions forum, no need to have more than one.

 

[TheDanMan]

I just fixed it now. Everyone can view it. Thank you.

 

[SenorNoob]

30 pounds sounds low to me, but I'm a 4.0 guy. Those run 42 with no vacuum and as low as 35 with vacuum. Who knows how accurate your gauge is either...

That said, it kinda sounds like a miss. How long since you've had spark plugs, wires, distributor cap, and rotary button?