Rrussell30

my 07 c230 has a misfire on cylinder 1. its odd because it will only misfire once the car is warm and in stop & go traffic or when the gas level gets down close to 1/4 of tank. If misfiring and at 1/4 tank then fill up the misfire stops. I have the following codes reading P0116, P0117, P0128 and P0301. I've replaced the camshaft sensors, coil and spark plug. any suggestions please.

Rrussell30

I have replaced the coil pack, spark plug, camshaft sensors and still have the codes p0301, p0016, p0017, and p0128 along with the misfire once the car becomes warm and you come to a complete stop. request assistance please from anyone who has had this problem or knows how to cure it. thanks

samaritrey

What engine do you have?

Rrussell30

v-6 2.5L gas

neomaxmaya

You might be facing a balancer problem.
its explained here: I strongly recommend you visit a star repair shop and let them extensively diagnose it rather than replacing parts that may not fix the codes.
Good luck and let us know what happens

Rrussell30

Would that issue only arise when the car is warm? I'd thought it would misfire from the start.

samaritrey

Yeah sadly you probably need the balance shaft fix and a new thermostat. The 16/17 codes usually come on before you actually notice any issues.

The misfire could be related or could be a fuel delivery issue or a ton of other things would have to look into that more.

Rrussell30

well, I removed the two camshaft sensors and checked to see if it was out of alignment. Its still in alignment. I need to get it to stop misfiring then trade it back to the MB dealership. Let them deal with it since MB is not standing behind that motor. What is the average price to have Star diagnostic done?

samaritrey

Not cheap here in the USA I have heard people paying for an hour of labor. That said if you are friendly with dealer I have gotten free start time.