Rough Idling at Cold Start

[w202_00]

Hello, I have a 2000 c230 compressor with about 240k miles. I have a cold air intake as well as ASP crank pulley. I recently noticed that when I first start the car and the supercharger engages, it idles kinda hard (as if i was tapping on gas) for about 15 to 20 seconds. It then settles and eventually the supercharger disengages once it is warm. I have also noticed some lag/backfire when I punch it. Any suggestions are highly appreciated.

[John Jones Jr.]

have it checked for fault codes.

[w202_00]

I checked it and its clear.

[John Jones Jr.]

I have also noticed some lag/backfire when I punch it. Any suggestions are highly appreciated.

No codes. I'd take a chance on getting a new coil of two new ones.

[w202_00]

No codes. I'd take a chance on getting a new coil of two new ones. How often are coils replaced? I think I have had the same for around 4 or 5 years.

Although I do not have any codes, I did notice that I have not cleared the secondary air system monitor. (I had cleared a code about a month or two ago)

[Abbaso]

Hi could you consider it a miss fire?
My diesel 2.5 wlt engine Ford Ranger had that problem when I started it in the morning. A very small crack on cylinder head(common problem on this vehicle aluminium head on a diesel). I put in wonder weld been in there for the last 60 000km. No more missfire on cold start up.

[Hario']

Sounds like a ropey sensor, IACV etc.