loss of power and check engine light on.

[tde720]

My 1994 Ranger 4.0l has all of a sudden had a major loss of power. it was throwing three codes. one for the IAT sensor, one for the coolant temp sensor and one for bank two running rich. After I replaced the coolant temp and IAT sensors the CEL turned off. I still have low power though. It has new plugs wires and coil and i have a new fuel filter but its not in yet. I even tested to see if the throttle body position sensor was malfunctioning and it is doing its job perfectly. Are there any suggestions to what i can do next?

 

[Andy D]

Yah, put the fuel filter in.

 

[Mark_88]

Also check the firing order of the plug wires...sounds like they were recently replaced...

 

[tde720]

I just put the filter in and its made a small difference in power. just to clarify what im feeling while driving, it feels okay until you let the clutch out halfway. then it starts to sputter under load. when moving it will accelerate but very slowly. if you floor it,it will have no immediate reaction but will suddenly start to accelerate when it feels like it. almost like it bogs down and hits a random "two stroke like" powerband. its been on my nerves for the last few days and i need this as a daily driver.

 

[kevinbmx77]

Im having the same issue with my 3.0 94. I replaced the fuel pump and that helped for awhile but im stuck with the same problem again. Im thinking it may be the distributor, im almost positive thats what it is because ive changed alot of parts already