A couple of years ago I saw some advice on this forum that it was prudent to do a pre-imptave strike on CPS's and just replace them at 70,000 miles. Fast forward to yesterday. My 99 that had always started on about the 2nd revolution died in my driveway - crank and crank and not a lick of spark. Had it towed to the dealer ($69 dollars). Diagnosis - bad CPS (Parts $112, labor $172). Milage <70,086>!! The moral of the story? Listen to the gurus on this forum....