What are the possibilities of both Ignition Coils going out at the same time on my 92 SC400? Is this an abnormal occurance, or is it possible? If it is possible, what engine/electrical component could be the cause of this so that I can tend to it and not go in and replace 2 Ignition Coils only to have them go out again?

Thanks.

By the way... car is bone stock in and out.

 

man.. its possible... if you have no problem changing the one on the block.. you might as well update the one over the thermostat. Possibly you just had or need a tune up..or bad gas.