tranly98

Hi eveybody, I have a question. I have 2003 mercedes C230 kompressor sedan. I am getting an error for first cylinder misfire and manifold absolute pressure/barometric pressure circuit high input. Is it necessary to replace the ignition coil or what should i do from here? I just replace all 4 spark plugs, new air filter, 2 new O2 sensors, the up and down stream and a new mass air flow meter.
Thanks in advance for any advices.

amanonfire

Have you fixed the $12 vacuum hose, or the cam sensor leak?

tranly98

yes, the $12 hose was changed by the dealer about a year ago. I looked at the cam sensors and thery were fine and not much oil mark on them. I just bought another hose ($15, the price's gone up). I try to change the hose and the fuel filter again this weekend. I hope the problem would go away.

amanonfire

Alternatively it could be your cat, a clogged cat causes the engine to stutter at high rpm

magnus203

tranly98

last time. I scanned the car and no error code show up relate to the cat.

magnus203

Beware, scanners and diagnostic computers can only read black and white, they have no brain. They can sometimes throw red herrings into a diagnosis.

TruTaing

I think AMG-Jerry had this issue on his c32, but his was bad enough where car would throw a CEL at him.

Good luck.

tranly98

Do you know anything about "Reverse Inhibit Control Circuit Malfunction" (code p0410 ). How can you test there is leaking vacuum hose?

DRAD-81

What RPM is this happening at? You say "enigne stall at high rpm" are you hitting the rev limiter?
Some cars mis fire when the car hits the rev limiter

Buellwinkle

The 2003 C230K had a minor problem with the head design. Replace with new design heads fixes the problem. It mostly manifests itself as a misfire in a cylinder that won't go away and it's due to excessive carbon buildup on the valves. Figure $1,500 for a new head and about 12 hours labor.

C230 Sport Coup

And usually that causes a misfire CEL.
But...it had to be more than like 20 misfires out of 600 to throw the code, so
I've also had the experience of getting misfires and NOT getting a code, usually at the onset of a coil pack failure, which quickly gets worse.