I will do that tomorrow, later in your slideshow it shows how to remove the idle up vsv for the power steering pump, why is yours not needed? Does it just not do much or do you no longer have power steering? Also I removed my A/C system so to remove the A/C v.s.v. I could just plug the two ends right?

My current power steering pump has no port for the VSV to screw into, so I just capped those lines. Even when I had the stock pump, I never felt that mode work anyway. If I need to, it is no problem to blip the throttle if you need a little extra steering boost on the trail.

I also no longer have A/C, so use the A/C idle up VSV as a push button fast idle (by hitting the A/C button on the dash).

Alright, I tested the fuel pressure on my truck today. Before the pressure regulator (at the fuel filter) it was at about 74 psi. At the fuel rail it was around 42 psi until it warmed up and started bogging down really bad (like it has been), then the pressure raised up closer to 50 psi. The fuel pump is supposed to pump at around 90-100 psi I believe. I thought the pressure before the regulator was low at 72, but then figured that the trip up to and through the filter probable kicked it down a bit, and when I revved the engine while the pressure tester the pressure momentarily went up like im guessing it should. So I no longer think it has to do with the fuel pump or the regulator. So im back at square one.

Fuel pressure per the FSM (at least my '85 edition) is supposed to be 27-31 psi at high vacuum (i.e @ idle) and 33-38 psi at 0 vacuum. Might want to check a later model FSM for the pressure on the '93 engine, but I think it is always below 40 psi at the top end.

The fsm for 93 says 38-44 psi with ignition on, engine not running, and the test jumper jumped. And the same pressure at idle with the vacuum hose detached from the pressure regulator. Once you attach the vacuum line back up it should drop to 33-37 psi. I never got that low of a reading all of it was around 42-44, but if something is causing the injectors to open for shorter bursts i.e. the oxygen sensor sensing over rich for some reason, the fuel rail pressure should be a bit high I would guess, but I have run all the diagnostics possible on the engine a few times and came back with nothing so im stumped. Also if the fuel rail pressure was too high wouldnt I be running rich, not lean?

Oh and once the engine warmed up, and really started to bog down the pressure really shot up to about 50 psi, so I am guessing the injectors were opening for an even shorter amount of time. Man im stumped.

Bogging down may be due to too much fuel pressure in the rail. When I disconnect the vacuum line from my FPR (which causes the pressure to rise about 5psi or so), the engine really bogs down off idle until you hit around 2500 RPM. Too much fuel is injected (due to the higher fuel pressure) and the engine is running too rich.

Yeah but I am definately running way too lean, not rich.

Well then, you might want to test the O2 sensor per the FSM procedure and/or install an air/fuel meter to keep an eye on the mixture as you drive to see if that sheds any light on the problem cause:
- http://www.4crawler.com/4x4/CheapTricks/Gauges/index.shtml#Air/FuelRatioGauge

Injectors can also be clogged:
- http://www.4crawler.com/4x4/CheapTricks/EngineMods/index.shtml#Injectors

Alright, a new denso oxygen sensor cleared up the bogging after warming up (running super lean). I am pretty sure that the main problem with that was the sheilding on the sensor wire in the wiring harness was touching the actual wire, and was shorting it out (my old o2 sensor plug melted when it fell onto the muffler about a year ago, when I rewired it, I didnt pay attention to the sheilding, and it eventually shorted it out). The new sensor is a good thing anyways though seeing that the old one has over 150k on it. Now there is a different problem, im thinking it was there all along, but not as noticeable as the lean problem. Now I believe that the timing chain has jumped a link on the cam sprocket. My truck lacks power, not like when it was running lean, but a constant lack of power. It is a bit hard to start now, the exhaust smells a bit rich instead of lean now, and the compression on all four cylinders are even, but very low. The only problem is, if there was enough slack to jump a tooth, wouldnt I have a hole in my timing chain cover already?