The explanation above is what the garage told me. Is the wiring harness actually near the exhaust manifold so that it COULD melt? First they were saying the previous owner was responsible, then they switched to "bad design by Chrysler". The problem started suddenly (no prior warning) - driving through a tunnel and the vehicle died, started up again after waiting a couple of minutes. Then ran ok - drove it about 5-6 miles to the 1st garage. They told me "bad gas" and put in dry gas and said to fill it up with hi test and then do the same for the next 3 fillups. Put the tester on it and no error codes. Ran fine for about another 5-6 miles (hadn't filled up yet). Stopped for dinner, started the car again and white smoke started coming out of the exhaust and it was running very rough. Filled up with Hi test, and it ran extremely rough trying to get my mom home about 25 miles away (north on I-95). Went through about 1/4 tank going those 25 miles. Parked over night and same thing the next morning. Had AAA tow it to another garage. They are the ones who diagnosed the computer module failure and then when installing the new one found the wires fused together.