I bought the car in 2003 and ran perfectly for first 2 years after which the wiring harness corroded and had to be changed. Ever since, my car hesitates to start, and once it does, it seems to misfire on idle and is very jumpy, and usually shuts off after a short time. This only occurs on idle, though.

According to my mechanic, the car's central computer was damaged by short circuit when the wiring harness broke, but he's not entirely sure yet. What else could I have him check? Maybe the injection system?

Anyone have any ideas? I'm praying it's not the computer.

Thanks