Quote:
Originally Posted by Hatebreed
Yeah, that’s what I have been reading as well. I was messing with the throttle body a bit and I managed to get it to throw a ASR code. My guess is from a miscompare from left to right. So the system is working. I am going to pull a plug from the night and left bank and see if I can narrow it down a bit. The exhaust smells like raw fuel. It’s still running well with little indication of an issue outside of the smell. The ASR code went away after I restarted it. I am really appreciating my 300SDL right now. LOL.
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You're going to need to pull codes to help diagnose this without throwing money at it. More specifically, clear all existing codes (don't bother writing them down - likely will be a zillion from many years past), verify codes are cleared, drive the car a bit, then check what new codes appear quickly. A hand-held blink code reader will get you the basics.
The fuel smell is a mixture issue, could be related to MAF's, O2 sensors, or LH modules. Assuming the cats are present and original, it's hard to diagnose without live data, which requires a digital scanner (Star/SDS, Snap-On MT2500 with MB kit, or similar).
Jono is right, start by checking the MAF wiring and the rest of the upper harness, and a smoke test would be a good idea as well.
