Need help with coil pack issue
Hi all. I'm happy to find the Bonneville Forum. I have a '99 SE with an issue that I can't seem to find an answer to. I bought the car 5 years back with 96k and now have 173k. When I bought it, there was a 'slight' occasional miss. When it finally got bad enough for the check engine light to come on, I had a misfire on one cylinder. I replaced the plug and wire and no help. I noticed the plug wire post on the coil for that cylinder was sort of white so I replaced the coil and the problem disappeared. After around 30k miles, the problem returned and that same post was again discolored. I replaced the coil and fixed the issue once again. Then after another 20-25k the same thing happened. This time replacing the coil only fixed it for a few thousand miles and then another replacement. Now after only 2 days the problem returned - same coil - same post. The parts guys, dealer and another local ASE certified mechanic all told me it could only be the coil. Well logically, it has to be something else. Has anyone come across this or have any ideas? ICM? ECM?
Thanks for any suggestions.