Wayne Harper wrote: : My 91 toyota pickup (V6,EFI) has developed an intermittent starting : problem that nobody has apparently seen before, or can fix. : It ALWAYS starts OK when completely COLD or HOT , but ocasionaly when : the engine has cooled to a certain point, it refuses to start for : anywhere up to an hour. it turns over but doesnt fire.
I had a similar problem in an '86 Celica. An intermittant coil in the distributor was the problem (reluctance pickkup). However I don't know the ignition system for your car .