1994 Pontiac Sunbird

Engine Performance problem
1994 Pontiac Sunbird 6 cyl Front Wheel Drive Automatic 220000 miles

k. I bought the car from my buddy about a week ago, when u start the car it runs fine, dosent smoke, idles at 1000rpm, when u put it in gear the idle drops to about 400rpm and when u try to drive it it drives but sounds like it bogging, it feels like a big loss of power, so far ive changed the sparkplugs, coil pack, egr valve, battery and still feels the same. Please help!
June 22, 2008.

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