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Facetious -> 1999 chevy express misfires on 2,4 cylinder (3/1/2008 6:47:14 AM)
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I have 1999 chevy express cargo van with the 5.7L in it. Just yesterday as I was driving down the road the check engine lamp cam eon and it started rnnning rough, with loss of power. It felt like I lost a cylinder or 2. So when i got back to the garage, I pulled the engine cover off and began pulling the wires 1 by 1 from the distributor cap to find which one it was losing. I got to 2&4 and when i pulled one of them, ran better, with still a bit of a misfire. I put it back in and pulled the other and the same thing happened. So here is the dilemma. When both 2&4 are plugged in, they both do not fire at all. But, if either one is plugged in individually, they will fire. Code i am getting is P0300. Random misfire in multiple cylinders. I've narrowed the problem to 2&4. Seems electrical/electronic to me. Cap, rotor, plugs, wires check out fine. Any ideas?
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