Veh starts up runs until it warms up than shuts.

First you have to determine what's missing, fuel pressure, spark, or both. Next you have to list the engine size when asking about an engine problem. If you have a crankshaft position sensor in the top of the transmission bell housing behind the right cylinder head, that is a common failure item when it gets hot, and it will often work again when it cools down. Usually though it takes a half hour or more to cool down. Check for voltage at the ignition coil's positive terminal during cranking. If you find 12 volts there, you have either a spark OR a fuel supply problem. If you find 0 volts during cranking, you won't have spark or fuel pressure because the Engine Computer isn't turning on the automatic shutdown (ASD) relay. That's due to a failure of the crankshaft position sensor, or the camshaft position sensor in the distributor. Reading the diagnostic fault codes may indicate which one has failed.