i have a 2001 ford ranger 2.3liter 4 banger and i have replaced the wires and plugs and also replaced the fuel filter and it still seems to struggle when i put my foot into it. feels like its holding back,sputtering or something like that. if anyone has an idea please respond .

 

Could be a number of, or combination of things.

Do you have a CEL lit????

If so, run this puppy by your favorite autoparts store for a no cost computer trouble code scan & post All of the code Numbers here, as they could offer up some good trouble shooting clues.

If you don't have a CEL lit, check the fuel pressure, air filter & air intake all the way back to the inner fender liner for obstructions.

If you've modified the air intake & are using an oiled foam, or cotton gauze air filter, consider cleaning the MAF sensor as it's likely dirty.

If all that checks out, then test the TPS & see how it measures up.

If that proves naught, then come by & hook up a scantool that'll display PID's & post the short & long term fuel trim values & the MAF & O2 sensos PID output to the computer.

A bunch of thoughts for pondering.

 

Did it do this before you replaced the plugs, wires and FF

 

yes but not as bad