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Posted on Jan 02, 2017
SOURCE: car will not turn over
If I understand you right, the problem is the engine will not crank, that is turn over when you turn they ignition key to START. Having said that, might it be that the issue is with the starter system. The starter system is initiated at the ignition switch when the key is turned to start. At this point, the ignition switch then provides +12VDC to a starter relay (if the vehicle has got one) or direct to the starting solenoid. The relay is but a remote switch with slightly higher amperage capacity. The starter relay then engages and supplies +12VDC to the staring solenoid. The starting solenoid then performs two (2) functions. It provides the switching action (hundreds amps) from the battery heavy cable to the actual starter motor. The solenoid likewise pushes a small pinion gear along the shaft of the starter motor to engage the ring gear. The ring gear is of course on the edge of the flywheel which in turn is attached to the crankshaft.
Starter system problems could be corrected by:
1. check battery, battery cables and connections;
2. charge the battery if required;
3. clean brushes and guides of brush holders of the starter motor;
4. clean the commutator and commutator segments;
5. check/replace the armature or field coils if determined to be defective;
6. in some extreme cases it could be the drive pinion or the flywheel gear ring is defective.
7. often it is the big switch that the solenoid activates that looses contacts causing no +12V internally to the motor.
8. Most likely would be a defective starter relay or the IGN switch itself. Relative to this, you might try and check the connectors/terminals and electrical joints.
In the picture below, the upper portion is the starter solenoid while the one below it is the actual starter.
Given the amount of work to overhaul a starter, you might consider just replacing it.
So recommended course of action is determine if there is +12VDC at the starter solenoid when IGN switch is turned to START.
Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.
Good luck and kind regards.
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Posted on Jun 04, 2008
sounds like a dead battery to start with. Not even enough juice in the battery to energize the solenoid / brake interlock to get it out of PARK. Hope this helps
Posted on May 05, 2009
Sounds like the starter has failed. Have someone turn the ignition while you tap on the starter with a hammer. If it starts, that confirms starter. If it still doesn;t start, remove the stater and have it bench tested at a parts store.
Posted on May 13, 2009
The problem would be the starter they go without any warning
Posted on Jan 10, 2010
Testimonial: "Terian5- Thanks for the help Traced the wire to starter. the wire looks like it snaps on. put it back and it started. I need to tighten nut."
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