I have a 1993 Camry with the 4 cylinder engine. In the past four years the ignition coil has failed four times. The new coil will last approximately one year. When a failure occurs the engine will not fire at all. When I check the coil either the primary or secondary side (or both) will measure out of resistance specification. Does anyone have any suggestions on what is causing this repetive failure?

Did you use OEM part?