I Have a toyota 7 series that will not stay running. as soon as you release the key it dies.... if you hold the key in and unplug the starter coil, the truck will appear to idle just fine. I Have checked the "usual" distributor connector has 12 volts to it. the single wire oil switch (by the fuse box) has 12v to ground. I swapped as many relays, between this truck and another just like it.

Oh Yeah, This truck died right after a " tune up" plugs/wire/cap/rotor etc.... HELP!!!