I need help!!!

[allenhudson91]

My explorer is hesitating when i press the gas. If i barely hit the gas it runs fine, and if i press the gas nearly all the way it runs fine. I have changed my spark plugs, and the wires are fine. What could be wrong? Could it be my fuel pump?

 

[mrboyle]

It could be many things. Fuel pump, Mass Air Flow Sensor, Fuel pressure regulator, throttle position sensor, etc... It is impossible to diagnose your problem without either being there, or having some more input from you're side. You need to start by cleaning the MAF. If that doesn't help, try testing the tps (use search feature to find out how). Keep moving down the line if you're problem still occurs. Have the fuel pressure tested, fuel pump flow, waveform and curent draw tested. Its going to be a process of elimination and unless you have the proper tools you may end up needing to take it to a professional to have it diagnosed.

 

[rileyrs]

clean the maf, it worked for me.