The ignition relay acts like a breaker in a house; when you have a relay that is weak, you will get this problem. But the computer will test it as good because it still is good.It's just weak, making it trip.The reason it will start again is because the relay will automatically reset itself after the relay cools and you are off and running again.To explain the type of reaction your car or truck would experience if this were to happen is as follows:The car or truck will just plain die! no warning!IT WILL NOT spit and sputter like it is running out of gas.
Now, a module for the distributer will act the same way, but the difference is that the car or truck will not continue to start after a period of time.My suggestion is a cheap way to fiqure this out: purchase a continuity tester at any local hardware store (they are only a couple of dollars) and check the leads coming from the distributer mod. If it is good, it will light up the continuity tester. If it is bad, it won't. This only works if the car will not run at all because the mod will check good if it is weak as well as the ignition relay.Another way to fiqure this out is to go to a local junk yard and pick up a distributer mod and a ignition relay and it will cost you maybe the better part of $10.00 and you may be worry free as long as you own the car with the used part.But if you feel uncomfortable putting used parts into the ingnition system, then replace one or the other but not both and see which one works and then buy new.
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