'87 Plymouth Voyager SE

…has Mitsubishi 2.6L engine. Will just sputter and quit unexpectedly. This happens

very occasionaly but can’t trust it to drive. Always when hot, and always when it has been parked for a little while with the engine off. Go to drive off and about 100 yards down the road, will sputter and quit and will not start. I can crank it until the battery goes dead and it won’t start, like not a drop of gas is reaching the engine. I have it towed to the mechanic who can’t see it until the next day. By then it starts up just fine and he can’t even begin to track down what the problem is. Any ideas?

What the heck, try the fuel pump relay. Go to an autoparts store and ask them to look up its location on their computer and if its in the cabin, that could be it.