Help: Slower than normal 2.3L

[lmshelag]

So here's the back story. I purchased a 94 XLT ranger for a run about truck. when i bought it, it seemed to be down on power, but i'm a fairly mechanical guy, i figured i could tune her back into shape. WRONG. i still cant figure out why its so damn slow(we're talking struggling to do over 60mph without a tail wind or hill). It will idle and drive slowly under 50% throttle like nobodys business, but anything after 50% makes no change to the accel rate. Keep in mind that the truck does not spit/sputter or cutout, its very smooth, just low on power.

Here are the places i have checked.

Compression: +120psi across the board
Fuel: New pump, filter, pressure regulator
Ignition: plugs, wires, tried disconnecting each coil pack and listening for a difference
Intake: new air filter, disconnected MAF to set ECU into base mode, (just idled like crap, no other change)

If you have any ideas please let me know!

 

[dangerranger83]

Crankshaft position sensor could be going out. Also check the egr.

 

[Mark_88]

Did you check the throttle cable for slack in the pedal? Common issue...easy fix...