I have an intermittent problem with the idle of the car. Every so often when the car comes to a stop the engine will die. The computer does not have any codes in it. The car has 100,000 miles on it. The spark plugs have 20,000 miles on them. The intake manifold shows no leaks when smoke tested. I find no carbon build up at the throttle plate ( possible restricting the movement of the throttle plate and causing the problem ). Moving the wiring harness back and forth does not effect the cars idle. I do find some random misfires on all cylinders in the live data of the computer but not sure what if that is related to the idle problem. Not sure what to check next? Any ideas out there? Thanks John