rough running, lack of power
I have a 99 Bonneville SE, all stock. The car runs rough intermittenly, but mostly when it'* cold or has only been driven for 30 minutes or less. Once the car'* been driven for an hour or more it'* fine. Weather doesn't seem to play a factor in its performance either. It seems that when the RPMs are greater than 2500 it seems to miss and the transmission slips. The car has 53,000 miles. I am going to change the spark plugs, wires, fuel filter and air filter. I don't think I have a transmission problem here due to the lower mileage. About 1,000 miles ago I was getting a Cylinder 2 misfire from the computer. Does anyone have any other recommendations??