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W203 Check Engine Flashing when gassed, loses acceleration around 40 mph
Hello,
I have a 2002 C240 that recently started throwing the check engine light. When I gas it, it flashes and loses power.
One time, I pulled over into a neighborhood to recrank it and as I was making the U-turn, everything went out (power steering, acceleration, engine) and all of the lights on my dash flashed. I cannot drive it over ~40 mph or it gets weaker and weaker until it fails altogether.
I hooked it up to a diagnostic tool and saw four cylinders were misfiring (1,4,5,6). I replaced all 12 spark plugs but they were still misfiring. I replaced all 6 ignition coils and tubes and it's still doing the same thing. My brother suggests vacuum tubes, my dad suggests catalytic converter, but I don't want to continue throwing parts at it until I'm sure what it is. It's also got a brand new SAM and ECM from past repairs.
There is a small rattle that started underneath the driver side about two months ago, but I assumed it was an exhaust clip that broke and it was just bouncing around a bit. It does it sparingly and I'm not sure if it's related or not, but maybe it finally knocked something it shouldn't have?
I have attached the error codes from the other day.
Additionally, if you know how to fix the airbag issue, information on that would be much appreciated.
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