Happy Holiday season. Maybe someone can help. I have a 96 S320 that has an uneven surging stumbling idle. Under acceleration the power is very uneven and will completely stumble and resume. I've even had trouble with stalling. Any Ideas?

Likely causes are: vacuum leak, bad mass air meter, throttle actuator.

Your engine is an M104 engine, the same engine used in E320's.

Search the posts of Arthur Dalton. He has been extremely helpful with helping people with your exact problem. There is a ton of info available to read.

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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".

From my experience with EXACTLY what you are describing, im going to bet ALL money on the Oxygen Sensors....

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My Work:
Mercedes-Benz Manhattan, Inc.
Business Development
536 West 41st Street
New York, NY 10036

-My Garage-
1996 E320: White 118,000 miles ~Dad's Driver~
1996 E320: Green 109,000 miles ~Mom's Driver~
~My Babies~
2000 SL500: Desert Sand 96,000 miles
-Previoulsy Judge Judy's-
2008 E350 4MATIC Sport
-Flint Grey/ Ash/ Black Birds Eye Maple-

No CEL and codes?

If so, post them.

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Terry Allison
N. Calif. & Boca Chica, Panama

09' E320 Bluetec 77k (USA)
09' Hyundai Santa Fe Diesel 48k (S.A.)

I will post codes as soon as i can get them read. There is no check enging light.; the shop can't take the car until tuesday. I'm also going to try unplugging the o2 sensors and see if there is a difference. I also unplugged the mas sensor with no difference at all. Thanks guys and I'll keep you posted.

It's amazing that just a coil can cause that much trouble but that's it. A coil.
Thanks for your input