you need to scope the crank sensor. i cobbled a harness from 123 abs sensors. hook it up to the ezl, then close the hood-builds heat. let it idle. when it stalls, crank it and see if the the scope line is flat. caught alot of the 102 and 103 crank sensors this way. they are more fragile than the ezl-easier to find when they fail. if the cranks sensor still has a signal, then look closer at the ezl.