No codes are being set. When it falters the tachometer drops way off in tune with the (misfires?). I can barely keep it at 70MPH. I have checked so many things. Let me just say the fuel pressure is good, the plugs/wires/cap/rotor are new, engine ground and battery cables are new. New sensors: O2 (4), MAF, crank position and camshaft. All Delco parts (and probably more than I am remembering to mention).
Friday, October 5th, 2012 AT 4:40 PM