I replaced the fuel pump about 2 months ago since then i have replaced the spark plugs plug wires crank sensor both coil packs intake air temp sensor cam sensor MAP sensor and it still hesitates after it heats up to operating temp it has the 2.2 4cyl.manual trans.the main time it hesitates is when the ambient temp is over 65 degrees and driving at highway speeds 65+ if i depress the clutch when it starts doing this it will surge up and down when the throttle is depressed about 3/4 the way down. i hollowed out the cat converter thinking it may be clogged but still didnt stop the hesitation running out of ideas and money.
May 10, 2012 at 3:05 AM