So I have a no crank no start situation. The lights, dash, fuel pump all work so there is definitely electricity. The batter is brand new. I thought it was the starter. I removed the starter and bench tested it. The starter works perfectly fine. While I was at it I just installed a new starter because I had one and the old starter looked like it had seen better days anyway. So, it must be electrical. I'm thinking it's the ignition switch or a starter relay. Except I cant seem to find the starter relay (except for the picture I attached). I have an LM7 5.3 in the el camino so the wiring is a combination of the 5.3 and some of the original el camino wiring. The car does not have the fuse box from the 5.3.I'd call that a switch rather than a relay. What is the problem that prompted the question? Starter solenoid?
I just went through this problem. It isn't the fusible links as they are on the output side of the solenoid and don't have any effect on starting the car.Sound like a fusable link at the starter, these cars dont have a relay. Check to see if you have 12v at the pink wire on the ignition switch that is pictured above.
Drkuhar is right. The ignition cylinder turns in the column. When you turn the key to the start (Crank) position, it pushes a rod on top of the steering column in a downward direction. The bottom of the rod has a right angle that sticks in a hole in a section of the ignition switch that moves up and down inside the switch, which is hard bolted to the column (as in the outside of the switch can't move but the inside can.) When the inside of the switch moves down (on the ignition key turning) contacts inside the switch energize the starter wire, sending voltage to the solenoid.There is no starter solenoid orher than on the starter. The switch you pictured is adjustable and could have slide in the mounting slots and not letting the start position engage. I would hook that back up and put a test light on the purple wire under the hood and see if you get it to light up when turning the key. If it doesnt light that ignition switch could be bad.. check block grounds also
What am I missing? One fusible link pulls hot from the solenoid and runs to the generator, a/c and fuse parts of the fuse panel. The second fusible link goes to the headlights. The start position on the switch is a separate wire that runs from the start position on the switch to the input side of the solenoid. Blown fusible links would kill the lights and some accessories, keep the a/c from running and probably the alternator would not charge the battery. Electrical is not my strong suite. What am I not understanding? (Not being a smart *ss. Really don't see an issue.)
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