Brand new 120amp alternator installed yesterday, before then alternator was replaced in 2012, but vr was swapped out every year. Actually, with my spark plugs, I am running non-resistor Champion plugs that I converted to non resistor plugs by removing the resistor and installed a solid copper core, but I've done this for a while and never an issue. I will try the ignition coil first

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1990 190E 3.0L