I have a 1997 wrangler 2.5 se that has 150,00 miles. Recenlty I have noticed a huge decline in power. Any small hills or hiway driving is were the power loss is most noticable. I have changed the plugs, cap and rotor, wires, coil and pickup coil. This made no improvement. It seems to be running a little on the rich side and my gas mileage has also stared to decline a little. The computer is throwing no codes at this time I checked and so did my loccal parts store. I am puzzled and help would be grealty appriciated.