Folks,

Started my car today and it started running rough and giving off that rotten egg smell. Not sure if this weird 60 degree weather here in the midwest has anything to do with it or not. Drove it around the block once then decided to park it and investigate. I did notice that all of the gauges worked except for the speedometer. It seemed to be stuck on 0 while driving, then it kicked right up to 20mph after a bit.

I pulled codes and got the following:

Pin #7 (EA/CC/ISC Module), I got code 11.
Pin #30 (SRS Control Module), I got code 8.

No codes from any other system.

Any clues what to look at? Could I have a misfire or something?

2 things...
1... I recently had the car detailed (including engine). Not sure if that's relevant. It drove well for 2 days afterwards.
2... The original wiring harness was replaced in 1/2001

__________________
Willy

'94 E420 White

Mods
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Berg Werks Keyless Entry
Buzzer replaced with Chime
Dash Light Upgrade
Burlwood/Leather shift knob
Alpine CDA-9815 Head Unit
2002/2003 16" C Class 7-Spoke Wheels
Updated "Chip" to fix Code 19 problem