Chrysler has issued several updated versions of the software
programming for the engine control computer. The dealer can connect the
vehicle to their diagnostic scantool and upload the latest version of
software into your car. It may help, it is hard to say. But, some of
the recent updates were supposed to target idle issues. Though it is
possible there is a faulty component still, more diagnosis might be
necessary.
Once they have reflashed the computer to the latest version of
software, see if it helps. If the problem still is not corrected, then
the car should be left with the dealer so they can have time to
duplicate the symptom. Make sure you are very specific in your
description of the problem. Try to have the tech sit in the car with
you and duplicate the problem if possible, so they know exactly what
you're talking about. A lot of problems are misdiagnosed because of
miscommunication at the dealership between the service writer and tech.
If it only happens in the morning or after the car has been sitting for
a long time, the car should be left at the dealer so it can sit
overnight, then the tech can have the scantool connected to look for
causes while the problem is present. Once the problem goes away, he is
probably not going to find it unless a specific service message has
been issued that addresses this symptom. So, try to make sure the
dealer knows what to do. Hopefully the tech will make a recording of
the engine computer sensor data while the problem is occurring. Then he
can track the problem by studying the data.
Insist that the dealer contact the Chrysler Technical Hotline once they
have duplicated the problem. This way they will be more likely to have
the latest information about the issue. Many times dealers do not keep
their scan tools updated, for example, and the latest version of
software is not loaded into the car because the dealer's scantool
software is too old. Checking with the holtine is a good way for them
to confirm that they are using the latest fix information.
So, the main things to do next:
1. Get the car's computer reflashed to latest level
2. Make sure dealer feels the problem for themselves
Good luck, I hope they can get this resolved quickly for you!