[Olly84]

Not sure if this is a problem, but my w202 c230k is quite loud upon start up and even when it settles down, the idle seems a bit high. Is this normal?

It hovers slightly below 1000 rpm in Park. In Drive or Reverse, it settles down to about 700. Are there any small replacements I can do to smooth out the idle? Plugs were changed 3 years ago, still using original coils and wires...

Thanks in advance for reading.

 

[bachusattackus]

Mine does the same thing. This is normal. When you first start the car, the supercharger is acting as an air pump. The higher idle also allows your engine to warm up faster, and your catalytic converters.

Idle on your machine is software based. You would need a dealer or someone else with the Star Diagnostic System to change it.

It should settle down after a few minutes.

 

[glenmore]

At 150k, has the SC been rebuilt?

 

[Olly84]

no, the Supercharger has not been rebuilt. I'm not quite sure what to do with it, wait till it fails and then replace or replace it while I'm ahead...

It's working absolutely fine at the moment, but who knows when it'll fail 0.o Hopefully it wont!