I've replaced everything I know of to fix this problem. I've replaced the plugs, wires, coil packs, EGR valve, fuel filter and complete new exhaust system. The fault code shows a bank 1234 mis-fire. When you first start the truck you can really hear and feel it as the truck warms up it seems to go away untill you get into it while your driving it. Also I noticed that the oil presure will drop and then jump back up when you stop or park it. The truck has a 4.6 liter motor with a alert air intact system. I replaced the exhaust because the convertors were clogged. I'm currently running a can of 44k in the fuel to see if it helps. It's a very nice looking Harly Davidson model 4x4 and I would like to get it running right so my daughter can drive it to school.
have the same problem?
Tuesday, December 20th, 2011 AT 1:00 AM