On my 95 Nissan Altima, I covered the alternator and distributor. About a day or two later my check engine light came on and my rpms fluctuate when idling and the car will sometimes jerk a little when driving, like when I shift gears. I looked down in the spark plug wells and I had water in a few of them, so I dried it out and replaced the plug wires, I also replaced the cap and rotor(these were all old anyway). But I am still having the problem! Video of my rpms while sitting at red light -
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