Hello, I have question. I hope you can answer. I have a 1999 chevy Astro 4.3L. 95,675 miles on it, auto trans, 2 wheel drive.
I scanned the vehicle and It is showing P0304 and P0300. Misfire at #4 cyl p0304, and Random misfire P0300.
So far I have changed the coil, distibutor, cap, rotor, wires, plugs (AC delco), Control Module and map sensor. I checked fuel pressure (61 PSI), checked oil pressure (71 psi @3000RPM) And it is still Mifiring same codes popping up.
I checked the # 4 plug dry after a run and wet after another run. Hmm.I don't get it. Oh I aslo checked main voltage wires at coil (near 14 volts) and near 14 volts at dist. Relucter. Please help.
Wednesday, September 19th, 2007 AT 8:32 PM