I recently read an article about replacing the engine coils if you replace
the ECU.  (96 E320).  The car has 200k miles, and I'm not sure if they have
been replaced.  Should I replace the coils anyway, just as routine
maintenance?  I installed a new ECU because of engine starting problems,
and this is what I determinied was the problem, but not sure now, because I
have some of the same simptoms at starting. (Hesitation, possible misfiring
, engine turning but taking a while to start).