Hi,

My 99 S420 has the check engine light on, and the engine is misfiring, (badly). Could it be the 02 sensors? or the converter? Any way to tell which? I just had the trans replaced < 500 ago. Could the 2 be connected?

Thanks!
[&o]
Neil

 

Lugnut said it's a high sulfur content >>> READ THIS

 

Yeah, Neil, what he said.

Hey, you look like a girl.

 

LugNut,

Thanks for the pointer.....I think this may be more than fuel formulation. The car seemed to be running on 5 of 8 cylinders when I dropped it off at the shop...

 

The misfiring and CEL are unrelated to the rotten egg smell.

 

too lean..>?