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really bad grinding...

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Old May 4, 2009 | 10:25 PM
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really bad grinding...

... when i go to start my truck sometimes it make a really bad grinding and will not start. if you move the shifter up and down in the gears and try it it will start and sometimes when it grinds if you put it in N it will then start when you try it. help please.
 
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Old May 4, 2009 | 10:27 PM
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Year, Engine Size and Mileage would be helpful info to start with.
 
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Old May 4, 2009 | 11:33 PM
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manual tranny or auto ???

kinda hard to tell from ur info whats going on at this point...
 
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Old May 5, 2009 | 12:36 AM
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more info!!!
 
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Old May 5, 2009 | 05:26 AM
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The OP has a 2000 F350 with 5.4L engine and auto transmission.
 
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Old May 6, 2009 | 10:38 PM
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More info

It's a 2000 f350 5.4 liter v8 auto trans 4r100 4.11rearend. Any info on this grinding thing would be great.
 
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Old May 7, 2009 | 01:06 AM
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Worn out teeth on the starter or flex plate?
 
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Old May 7, 2009 | 01:06 PM
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Originally Posted by cartmanea
Worn out teeth on the starter or flex plate?
+ 1 flex plate..........You didn't mention miles.
 
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Old May 7, 2009 | 01:58 PM
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+2 on the flex plate....Starter not engaging the plate....doesn't turn the engine.
 
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Old May 7, 2009 | 04:13 PM
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90,00miles and if it was the flex plate how big on job would that be? Has anybody done anything like that to there trucks?
 
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Old May 7, 2009 | 04:15 PM
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What about a starter solenoid? If the little sprocket thing isn't coming out all the way to make contact with the flex plate that'd be a possibility too right? 90k seems pretty low to be having an issue with the flex plate. Starter is not so hard to believe though.
 
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Old May 7, 2009 | 04:36 PM
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Originally Posted by dew the thunder
What about a starter solenoid? If the little sprocket thing isn't coming out all the way to make contact with the flex plate that'd be a possibility too right? 90k seems pretty low to be having an issue with the flex plate. Starter is not so hard to believe though.
Yea I did forget about that. The Bendix can weaken over time and not extend the starter gear to make full contact with fly wheel. Is the starter oily? If a starter gets excess oil on it from a drip or leak, they can fail pretty quickly. There was also an issue that I saw from another thread about the starter bolts coming loose. That could also cause you your issue.
 
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Old May 7, 2009 | 04:54 PM
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You would have to pull the tranny and converter if it's the flywheel/plate. Don't let it go too long if it's the starter.
 
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Old May 8, 2009 | 01:06 AM
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Originally Posted by dew the thunder
What about a starter solenoid? If the little sprocket thing isn't coming out all the way to make contact with the flex plate that'd be a possibility too right? 90k seems pretty low to be having an issue with the flex plate. Starter is not so hard to believe though.
Solenoid wouldn't cause poor starter engagement, it would either engage or not. If you get no cranking and your battery voltage is good, that could be starter solenoid, but if the starter is engaging the solenoid is fine.
 
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Old May 8, 2009 | 07:13 AM
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I would first check voltages before anything else, especially since it sounds like an intermittent problem. How old is battery? Could be weak starting current so starter/solenoid isn't getting enough juice to fully engage. Are all connections clean and tight? Also, check pos and neg terminal clamps on battery. I've seen the connectors break, but still make some contact so you don't notice it until it leads to something else. (Especially since the pos is covered.)
 
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