dpdean, not only are there codes that can be stored and read when the check engine light is not illuminated, but a decent garage with the right scan tools can actually see real time info from your car as to fuel ratios and throttle body movement and many other sensors, so if the garage you choose to use are really good at what they do and make the time to do a through examine they can interpret those real time sensor readings and get a much better qualified explanation as to why your care is hesitating. All mechanics/technicians are not created equal. Does this hesitation only happen when the car is cold or after it has warmed up to operating full temperature? That is an important piece of information, and intermittent problems are the hardest to correct. There is some advantage as to just drive it until the once in a while problem becomes a every time I step on the gas problem as it will be much easier to diagnose.

I own two Crossfires and have done 99% of the work on them over the past 13 years, Pizzaguy has owned his cars even longer. You can drive your car the way it is and enjoy the ride, or fix it. We are giving you advice based on our experience in a manner which we hope will get you back on the road with a completely functional car with the minimum of expense. These cars really are orphans, as Chrysler does not support them and Mercedes hesitates to work on them because their scan tools are not completely compatible with the Crossfire's systems. There is a lot of experience here and we are giving you the best advice we have; Good Luck and hope to see you at Athens !