Search Results for ‘stumbles’

I swapped the old romeo 4.6 out of my 1997 f150 with one from a donor wrecked lincoln town car 1999. I swapped my old intake, timing cover, pulleys, sensors, etc. out to make it work. I had pinging from day one one best gas. Took to ford dealer mechanic he tried switching the knock sensor...

Please help, my car is a 2002gt with a few mods ( aluminum lower, c&l upper, coils, 30# injectors, flowmasters,cold air, 4:10 gears, 100 shot, predator tune ). The problem is in 4th and 5th gear at high rpm and anything above 90mph the car has a miss or hesitation feeling and won't gain speed...