Date registered: Mar 2010
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Check engine light comes on intermittingly
Hi there. I have a 2002 ML320 and I'm having some issues. At times the engine runs smoothly and all is fine, when I'm stuck in traffic, the engine idles at 500-700 RPM and seems to sputter (for lack of a better term). This causes the check engine light to illuminate and it will stay on for the rest of the drive and will also be on when I start the car again. The next day when I start it up, it will be off and then when I'm stuck in traffic, the engile will idle rough again and the process repeats itself.
I had spoken with a few people and they said that maybe I had bad gas in the system and was told to buy octane boost and fuel injector cleaner.
I'm sorry if this has been posted before, I'm just looking for some solid advice before taking it into a shop.
Thank you, Mark.