Engine Performance problem
2002 Buick Century 6 cyl Two Wheel Drive Automatic 128000 miles
i have had this car for 1 year. Started getting bad fuel mileage. Changed plugs and wires didnt help just kept getting worse and started haveing hessitation when accelerating. Only does this after you drive amile or two when engine warms up. Unplugged egr valve drove 50 miles car ran like anew car. Plugged egr back up same problem again. Put on another egr valve made no difference. What next.
Friday, January 29th, 2010 AT 2:51 PM