I recently replaced a starter on my friend's 91 cavalier 2.2L. We took the old one out and put the new one in and now his car has lost all electricity. Which is strange because when we reconnected the battery the omputer scanned everything and clicked a bunch of times. So it read everything. Here's the deal though..... the green light on his battery was non existent and he left the car sitting there with the negative ground disconnected for a month and a half. I am assuming that his battery is just dead and that is the cause of his problems, however if the battery was really dead would the ECM still be able to go through the whole clicking process?