94 S420 RIP 2/8/13 02 ML55AMG, 06 CLS55AMG, 89 Mas. 228, 84 Por. 911 Carrera, 93 Toyota t.t. Supra
I have been beating my head against the wall for 2 months with the ignition system in my S420. I was on the highway coming home at about 2200 rpm. It was running perfectly and suddenly lost power. Got it home ran the check and it threw one code 7 ignition system failure. So I changed everything wires, plugs, coils, rotors, caps and still does he same thing and and after clearing it throws the same code. I have already changed the wiring harness. I'm at a loss here and I noticed an inconsistency. The rotor on the driver side distributor is tight, no play. The rotor on the passenger side has play in it and is moving from side to side approximately 5 degrees (approx. 1/4 inch). Could this be the source of the problem? Please help guys I'm in the backwoods of Pennsylvania and this is killing me. I love driving this car and suffering withdrawal.