First I will say thanks for any input. I drive a 2003 GP with a 3.1 (about 170,000k). Over the past year I have noticed that she has become slugis off the line and when getting out to past. I serviced her with new plugs, wires, air cleaner, fuel filter, and a trani flush. This did not cure the problem. Resently on the highway pulling a hill with my foot in it, it would not shift out of 2nd even after cresting the top. The check engine light came on but did not log any codes. Since then I can get it to do the same thing at will. Foot to the floor, trani down shifts to 2nd speed increases to 120km rpms @about 5000 but trani will not shift untill I let up on the throttle. If I hold it @ 120 / 5000 the check engine light comes on. I have done this with a Snap-0n reader plugged in and it doesn't log any codes, it does however show mis fire, mainly on cyl 1 & 6 more on the later. Any suggestions or comments would be great, and once again thanks.
Rob
aka Buthead