Thanks for responses so far.
The car runs great other than lack of power and the notchiness when floored. Idle is smooth and at correct rpm; very consistent. Step on it and it just has no guts at all. Car is maintained at dealership, it just had 90K service (plugs changed) late last year. Problem existed before the 90K service and no difference after. Could this be a bad coil?
Thanks. Brian

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Brian
1995 E320 wagon