My Crossfire does same thing the air pump works and the check engine light comes on after driving car to one town over aprox 10 miles then I must reset the check engine light to have the light to go off. I bought a new RCM and it started doing this after about 10 months of having the RCM installed because it was doing this before I bought the new RCM. So I have no idea what could be wrong with it. The check engine light will come on once I restart the engine after I come home from doing errands like light driving, the check engine light doesn't come on right away. The code says that the air pump is at fault. I went to the junk yard bought a used air pump and it does the same thing you can hear the air pump engage once you start the car. My emissions is due next month and I need to fix this because I asked for an extension once already. Once the car is 20 yrs old I can get antique classic tags which exempts me from emissions test. The car runs great .Can't wait to get this over with. I have replace all the coil packs and spark plugs and plug wires all new injectors and I am soon to change the fuel filter before next month just for maintenance I have installed new clutch and all fluids have been changed from power steering to rear end and new trans fluid. once I get this fixed I want to put a larger throttle body off a V8 Mercedes which I have ready to install ,I love my little red coupe.