I have posted before--this is a new thread for what I believe to be a new problem. Previously had egr fault, also had pin 8 code 13, and pin 14 code 11. Replaced MAF with new unit, checked egr valve, cleared egr tube, replaced vacuum line that runs across front of engine, checked for other vacuum leaks. Kept getting pin 8 code 13. Replaced engine wiring harness. (painless except for cost of part-1.5 hours, easy job) Car runs better, smooth idle and smooth cruise. no fault codes after 3 days of driving. Problem now is that engine has intermittant miss at idle and under medium and heavy acceleration. Feels like ignition or spark problem. Have read threads about coil to plug connectors--could this be the problem? Does this problem reveal itself with a fault code? Any suggestions?

Thanks, this site has been very helpful.

J. M. van Swaay