alright here it is the old owner had a guy run the 44K BS in the motor and now she idels ruff and low rpms.....did the O2 senor go bad because of it? or what do you think happened? please help me

I don't understand your post. What does "The old owner had a guy run the 44K BS in the motor" mean?

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95 E320 Cabriolet, 159K

While I've never heard of it, 44K sounds like a motor additive to me.

BS is probably an acronym for bull*****.

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Paul S.

2001 E430, Bourdeaux Red, Oyster interior.
79,200 miles.

1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".

I think he means BG 44K fuel additive.

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1998 E320 4-Matic Wagon

yes the bg 44k Bullsh**. It gums up the motor more then helping it. so i dont know if it blow out my o2 sensor. i was looking for what your opion would be on it.

I don't know how a fuel additive would ruin an O2 sensor.

Is it like your engine is missing?

Have you checked to see if a spark plug wire is not on tight?

What about vacum hoses? Could one have accidentally been knocked off?

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Paul S.

2001 E430, Bourdeaux Red, Oyster interior.
79,200 miles.

1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".

i will have to check them all out....i know we just redid all the spark plug wires,caps,spark plugs,and ect