Originally Posted by mholland30188
....... The codes I read at this time were P0300, P0301, P302, P304. My first thought was the coil pack. A local parts store "said" they could test the unit and they confirmed the unit was bad. $85.00 later I am at home and install the new unit. Start the truck and there is no change at all. Next I checked the plugs, that I had just installed a few weeks ago, and this is where things get a little confusing for me. The right bank (driver's side) of pluga were all very black and sooty and the left bank plugs were all black and soaking wet to the point that they were dripping wet. I have checked the MAF, TPS, CPS. I have checked the resistance on all 6 injectors and they read fine. Fuel delivery is good the the O2 sensors are good. Have any of you guys heard of or experienced this? Thanks in advance for any suggestions or insight.
Mholland, the misfire codes are for cylinders 1, 2, and 4.
Those cylinders are sequential in the firing order (142536),
which is significant. Actually this is the first half of the entire
firing order. Since the ECM identifies the start of the
firing order by a signal from the CPS (crank position sensor),
I'd start there.
It could be the sensor is dirty with metallic particles,
or maybe too close or too far from the toothed ring?
Maybe the connector isn't getting a good contact,
etc. Anyway, I'd take a good close look at it.......
Also take a look at the plug-in for the coilpack.