2000 Pontiac Bonneville vibration at 45-60 mph

2000 PONTIAC BONNEVILLE
138,000 MILES • 6 CYL • FWD • AUTOMATIC
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FREEMAN EATON
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Motor seemed to be missing, like 1-2 plug wires off.
I started out with new plugs,then spark plug wires,
then three ognition coils service transmission,balanced all 4 wheels.Problem is still there. Acts like a wheel out of balance, in a pull uphill,
let off the gas,and it stops.
Sep 23, 2010 at 8:46 PM
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