not true at all...
this is a non interference engine, it means in the event of the cams set 180* out or a broken timing belt, the valves will NOT hit the pistons...
its time to get out a multi meter and your manual, and test your igniter, AFM, Fuel pump, distributor, and anything else you see under the hood...
this is a 25 year old car, things will stop working...
here is a good place to start:
http://www.cygnusx1.net/Supra/Librar...Section=IG&P=2
look around the manual good luck.