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90 E250 with 4.9 and auto. I have a pretty good vibration while under acceleration, but seemingly none at the same speed coasting. Anyone have a similar experience?
Have you checked your cap/rotor/plugs/wires? These computers in our vans are almost too good because when misfires occur, it's like they manage to balance it out when not under load, such as coasting or idling. Check out the basics first.
