1993 Ranger 4.0L Problems

[Do0meR]

So, Im trying to get my truck back on the road, and I've been troubleshooting this truck on anf off for the past year. When I start my truck, my fuel pump engages about 65% of the time. I've checked my relays and they are fine, I've replaced the pump and sending unit and it is still barely engaging. I checked the plug on top of the gas tank where the fuel pump is plugged in, and there was some corrosion and a rotten teminal. So I drilled out the terminal and ran a straight wire through and used a bullet connector to connect it onto the terminal on the fuel pump. I know this could be one problem, but I can't see how it would spurratically kick on and off as it pleases. In addition to this problem, When the truck is running, and I go to drive, when I press the gas, the truck bogs down and wants to stall, so I gotta push in the clutch and try to get it revving again. I initially thought it was a vacuum problem, and I had found a rotten vacuum port on my driver side intake, where my brake booster, cruise control, air box all connect to. So I picked one up from the local wrecking yard (Ford does not make this part anymore, looks like a lug nut with 6 nipples on it, 2 of which are capped) from an f-150, which will do the job. Thinking this was the root to my bog/stall problem, I slapped that baby in, and ran my battery dry trying to start it. Im assuming it had to rebuild a vacuum, not too sure why it was so hard to start. BUT, once I got it started, I went for a test drive and AGAIN, this bog / stall problem is still here.

Any thoughts on this problem, anyone else experience this with the rangers? I heard it could be my MAF sensor, a little dirty or something, but Im waiting to get back to my shop of work to get some inverted torx screw drivers to remove the MAF sensor cap to expose the wiring they say gets dirty and such.

Any help or thoughts is much appreciated.