My 1998 e320 started misbehaving. I've been working on it off and on for a few months. Now that I need the car, I can't drive it.

Pulled codes in May got a P0400 so I cleaned out the EGR.

Fixed the code issue, but not the rough running.

Realized battery was weak from sitting, put a charge on it, and it holds the charge.

Now car won't keep a steady idle. Runs rough, speeds up and then stalls (cutting a fart in the process)

So I made a video and posted it to youtube https://youtu.be/FB0r20uRVc4

Additionally, after I start the car, if I press on the accelerator, I cannot get a steady RPM, and it doesn't seem to matter how much I press on the pedal.

Oh and one more thing, the O2 Sensor may be faulty, but I thought it was just a fine tuning trim O2 sensor. Car exhibits these condition when first started. It also seems like the very first time I try to start the car it doesn't start. 2nd attempt starts and runs rough.

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Closing the store
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