Ok I'll try to keep this short. I got my C230 K a little while back and the computer had to be replaced so that's done. It ran rough up and down from about 1000 rpms to 400? Checked codes, running rich, changed MAF meter it was covered in oil. Checked codes, misfiring all 4 cylinders, mechanic said throttle body, that's done (it was also covered in oil). Still has the same rough idol. Checked codes, cylinder 2 misfire, and is now starting to randomly stall while driving, specifically in hot weather or going up hill at all. What the heck? The way I see it I don't know what else to do but maybe the coil packs?
What makes this problem better or worse?
Worse when going up any hill
How long has your 2004 Mercedes-Benz C230 had this problem?
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Hello,
This is typical for your vehicle.
The tube that runs from your intake manifold to your intake tube is used to vent crankcase pressure. Oil gets trapped, sucked into the air intake tube, and from there it coats everything between the intake tube and the pistons.
You probably have a clogged breather tube, oil built up in the intercooler, a sticking throttle body, oil fouled spark plugs, and possibly another ruined MAF sensor.
Clean and install a catch can to stop this from recurring.
