Yep, tested that last week along with all injectors, then I resealed everything. I still get an error code 17, o2 sensor shirt to ground or positive, but that existed before problem occurred, plus I just replaced the O2 sensor and I traced the wiring from the o2 sensor, all the way to the ecu. I even removed the thick black sheath to make sure the green and black/white/red wire were visible and I saw no shortage. I then sealed all of that back up.

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1990 190E 3.0L