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Old 12-13-2017, 08:12 PM   #1
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Default Starter Grinding?

I recently had the issue where when I turn the key to start my Hardbody, the dash would like up but no noise from the starter. I went ahead and replaced the starter with one from O’Reilly’s - it still would not even make a noise. I eventually traced the problem back to bad wiring to the ignition relay.

Anyways - fast forward a couple days later. I started to notice a grinding like noise, just a split second of it immediately after I turn the key. The starter then seems to engage and the engine cranks on like normal. Oddly enough, this grinding noise only happens 1 or 2 times out of 5 that I try and start my truck.

I didn’t check part numbers as the starter I bought came straight from there online catalog. Do I need to shim the starter? Is that a thing for our trucks? Could they have given me a wrong model number starter? I’m afraid I’ll damage my flywheel if I continue to start my truck like this. Any input or experience would be great!
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Old 12-13-2017, 11:47 PM   #2
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i have an oreilly starter. no problems here. are you sure the flywheel doesnt have a bad spot somewhere?
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Old 12-14-2017, 01:52 AM   #3
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Ihaven’t checked yet, will probably tomorrow. Can a flywheel with a bad tooth here and there get worse if continued to be used to start?
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Old 12-14-2017, 06:24 PM   #4
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yeah eventually it will rest on a dead spot and the starter will catch part of that dead spot.
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Old 12-15-2017, 06:23 PM   #5
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this can also be a depth shimming issue. old cars used to have starter shims to make sure the little gear that protrudes out of the starter meets the flywheel properly. also the teeth on the flywheel can get worn off on the starter side effectively making it a "missed engagement"
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Old 12-15-2017, 08:37 PM   #6
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Interesting. I should note that occasionally the starter sounds like it’s trying to turn over, but is stuck or doesn’t have enough power. Like a high pitch whine. Battery is 100% fine, I know that it’s getting all the juice it needs. Ideas?
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Old 12-17-2017, 04:23 AM   #7
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thats the starter missing the flywheel completely. the starter is either too far from the flywheel or the flywheel is missing teeth. you can pull the starter to inspect both. rotate the motor over by hand to check the flywheel.
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Old 12-17-2017, 01:06 PM   #8
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Quote:
Originally Posted by jjohns2711 View Post
Interesting. I should note that occasionally the starter sounds like itís trying to turn over, but is stuck or doesnít have enough power. Like a high pitch whine.
Ditto prior comment. That does sound like either an alignment (shimming) or missing teeth problem. Slight chance the starter itself is not pushing its gear out.
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Old 12-17-2017, 03:27 PM   #9
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Quote:
Originally Posted by jjohns2711 View Post
Interesting. I should note that occasionally the starter sounds like itís trying to turn over, but is stuck or doesnít have enough power. Like a high pitch whine.
Do you mean that you can hear the starter motor spinning, like whine of an electric motor? If so, the solenoid is not pushing the starter gear teeth to mesh with flywheel teeth. Maybe time to replace starter or at least remove it and try to clean up the solenoid linkages.


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I Battery is 100% fine, I know that itís getting all the juice it needs.
We call this "famous last words", as if Custer had said "we'll be done before lunchtime".

Was the battery tested UNDER LOAD? All cable terminals and connections clean and tight?
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Old 12-17-2017, 05:23 PM   #10
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What exactly is shimming a starter? Like placing a washer between the bell housing and starter, to distance the starter teeth away from the flywheel?
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