2001 Chevrolet Impala LS 6 Cyl 3.80L
Cars rpm are going up and down and losing power while driving
While driving around on streets not highway. I just back from a trip that I drove 1500 miles only highway. At 80mph most of the way. I have had some electrical problems do to HIDs highs and lows. After market exhaust flow masters when from single to a dor. And a k&n intake kit. And a high quality stereo system. I'm getting the following codes.