Grinding noise when trying to start...flywheel? - LS1TECH

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Grinding noise when trying to start...flywheel?

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Old 10-25-2011, 08:45 PM   #1
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Default Grinding noise when trying to start...flywheel?

Last week I was driving home in 2002 WS6 with 113k miles and heard what I thought to be an exhaust leak out of nowhere. I revved the engine and it got louder but at idle seemed to disappear. I have a cutout so that may have covered it up. I just got two new cats so I thought maybe the bolts were loose.

I parked it and let it sit and the next day I get underneath to check the cats and everything seemed fine. So I try to start it and hear this really loud grinding noise and the engine doesn't even try to turn over. I do some searching online and read it could be the starter, bad ground, or battery not putting out enough amps.

I get a brand new (not reman) starter today and hear the same noise. Check the ground and wires and everything seems ok. I take the <2 year old battery to Autozone and they say it's fine. I then check the inspection cover and look at the flexplate and notice a small crack.


Last edited by TONY206; 10-25-2011 at 09:52 PM. Reason: flexplate not flywheel
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Old 10-25-2011, 08:59 PM   #2
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Automatic btw.
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Old 10-25-2011, 09:53 PM   #3
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Well, found a video and this sound could very well be it.

http://www.youtube.com/watch?v=wtK_I...layer_embedded
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Old 10-26-2011, 01:50 PM   #4
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torque converter bolts tight?

nvm didnt read your full post just looked at the video..
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Old 11-11-2011, 10:31 AM   #5
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clunks, engine, flywheel, griding, grind, grinding, intermittent, loud, ls1tech, noise, sound, squeaky, start, starting, truck

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