If the coil is dead the car would vibrate pretty violently at idle and would be lacking power at higher RPMs. Dead coil would no doubt throw a misfire code. Don't deive too long with bad coil as it will cause catalitic converter to fail. If the vibration is low to moderate I would check Vanos solenoids and eccentric shaft sensor.
Last edited by rusty_g80; 11-03-2013 at 01:43 AM..
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