Vehicle sometimes looses power under acceleration rpm's drop a bit then go up and back down a bit then back up all under acceleration

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Asked by Aug 15, 2012 at 10:13 PM about the 2002 Pontiac Grand Am GT Coupe

Question type: Maintenance & Repair

4 Answers

6,825

try replacing the sparkplugs and wires; one cylinder at a time. then see if it improves. has the transmission fluid ever been changed? and what is the car miles on the OD?

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plugs changed within last 500 miles, trans service 36k ago odometer at 125k, just purchased the car but have the service history since 15k

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change fuel filter? (if it has one) any check engine codes?

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sparkplug wires can cause irregularities like what u describe.. there could be arcing from it. that would be another easy job to do. i change my wires in 5-7 years.

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