Ford Crown Vic, Mercury Marauder, Grand Marquis
I have a 1997 crown vic lx, whenever I get to certain speeds within 20mph or less. I push the gas slowly, but sometimes it feels like it skips when accelerating. I replaced the spark plugs, spark plug wires, fuel filter, pcv valve, new egr gasket, New engine oil (5W-20), New oil filter, New...