I have replaced the cam sensor to clear up p0300 and bad cam sensor code that is gone put new double platinum ac delco plugs and the 8mmwires still have p0302 code has a shake miss at idle and on take off but after 2000 rpm it has plenty of power on interstate it loses power badly unless passing gear the miss gets worse when the engine is warmer oh forgot to mention its a 2003 Chevy blazer 4.3 auto 4x4 126000 miles on it thanks in advance

 

Blazer0386, the problem you described is nearly identical to what I am experiencing, did you get a resolution to your problem and if so, what was it?