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I have a 1998 chevy silverado, 5.7 four wheel drive. I had a bad grinding noise when trying to start the truck. I have replaced the fly wheel, the starter, the crank position sensor as well as the ign

Please note i have changed fly wheel, starter {six times} crank position sensor and ignition module already. As well as shimmed the starter. I also took the starter out and manually turned the flywheel, it is lining up just like it should

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  • rugratwatche
    rugratwatche Dec 03, 2012

    the truck turns over, If the ignition switch was bad, would the truck turn over three or four turns, then make that grinding noise?

  • rugratwatche
    rugratwatche Dec 03, 2012

    the truck turns over two or three times and then turns over as it grinds, I had this problem before but replaced everything and have been driving the truck for like a week with no problems, went out to start it today and turned over about twice and on the third crank it grinded again while turning over

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  • 157 Answers

Does it turn over as it grinds or does it just gring?

Posted on Dec 03, 2012

  • rugratwatche
    rugratwatche Dec 03, 2012

    it turns over and grinds at the same time,,,,could it be getting too wet under there? I thought the started was engaging the fly wheel too hard but now i don't wonder if its not disengaging?

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SOURCE: 1998 chevy silverado 7.4L 454 big block v8 dually

do not think alarm would cause this do you have a check engine light on?? there is a coolant temp sensor that reports to pcm it could be out of range you need to hook vehicle to a scanner and check the temp that is being reported by coolant sensor when cold and when hot also may want to look at mass air flow sensor also have you even thought of ignition module what symptoms you have sounds just like an ignition module problem

Posted on Apr 26, 2010

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SOURCE: replacing ignition switch in 2001 chevy silverado

Not the igniton switch, its the ingition cylinder and or the housing. The switch is not part of what you are really turning. It's connected to it via gears. The common problem is the key gets worn out and the tumblers wear also. Eventualy they do not line up right and will not make the "bar" drop in the cylinder to allow it to turn from the off positon. If you have the title in your name and the key has never been rekeyed or the code has been changed you can go down to a dealership with all of the info for the truck and they can cut you a key from the vin number. You can try that first before you put a cylinder and housing in it.

Posted on Oct 21, 2009

Testimonial: "I really appreciate this info it makes sense and hopefully this solves the problem. it gets really annoying not being able to start the truci"

  • 22 Answers

SOURCE: 1989 Ford F-150 won't start

I have found that Ford products are very sensitive to poor grounds and poor connections at the battery or starter/ starter solenoid. Clean all grounds and terminal connectors really through. Don't just look and judge them to be clean. After market add on battery clamps will corrode where you put the cable into them. Be sure to take them apart and clean there also. Also ck to be sure your battery is putting out the cranking amps it is
rated at. If not sure take it to a shop and have it tested. Good luck.

Posted on Dec 04, 2008

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SOURCE: 2000 chevy blazer, truck cranks

Does your battery go dead?

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SOURCE: 1996 chevy tahoe 4wd LT 4Door 5.7L Vortec. Truck

i suggest removing the flywheel inspection cover, and rolling the engine over a little bit at a time, checking to make sure that there are no worn or broken teeth. also, make sure there is no lateral movement, which could indicate a broken flexplate. good luck.

Posted on Dec 08, 2009

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