1994 E420. Cranks but doesn’t start. Backfires and sputters while attempting to turn over. After multiple attempts, it started and ran for about 15 seconds and stalled. Has new crank sensor, updated wire harness, has fuel pressure. The car was running fine and quit while driving. Anybody have suggestions as to what to check next?

It does not have ovp

Anyone have this problem before? Is there a way to test the ezl module?