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1998 Mercedes Benz CLK320

Tiny

BTOURES

November, 24, 2011 AT 8:24 PM

I got an check engine code of: PO170 (BANK 1) AND PO173 (BANK2) I REPLACED THE maf BUT NO LUCK

FOUND 9 RELATED QUESTIONS

1 Answer

Tiny

rasmataz

November, 24, 2011 AT 10:50 PM

Probable causes of an engine running rich are as follows: 1. Excessive fuel pressure can be cause by restricted fuel return line

2. Defective Oxygen Sensors.

3. Leaking injectors and fuel pressure regulator.

4. Coolant temperature sensor out of calibration.

5. Restricted air intake system.

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