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Advise needed* W203 C180 blipping Rpm during idle


rb26det9

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Dear Gurus, car encounters Rpm dropping n rising a lot during idle. Brought to workshop n was told could be miss-firing.

My spark plugs n ignition coil were replaced recently(less than a month). So really wondering what could seem to be the fault as no fault code showing up too.

Appreciate any advise please. Thank you in advance.

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If spark plugs are of correct specification, there should be no reason for misfiring.

So if plugs are of correct specification, it could be as follows:

1) Nose bled... vaccuum leak

2) MAF sensor is sick but not bed ridden to cause any error code.

Cents worth.

Retired from Modding since 2012
G13B Cultus | GC8C WRX STi RA | SR20DET S15 Hiper Silvia  | E82 135i M-Sports   W176 A250 AMG Sports

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Any loss of power? Kompressor? If yes, try check the connecting host/parts between supercharger and exhaust for pressure leakage.

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Any loss of power? Kompressor? If yes, try check the connecting host/parts between supercharger and exhaust for pressure leakage.

Hi Merceman, Will get it checked out tomorrow. Actually went to workshop last week but they could not find the problem and told me to monitor. Thank you for the advise. 

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