3800 GTP broke...

[ShwoffGTP]

The other night the car started to make a weird chattering noise under the hood. It started after I passed a car on Rt. 29. So, I stopped to take a listen to it. It didnt sound like a broken piston. At least not that I could remember from the last time. The noise wasnt continous, it was kinda sparadic. So, I figure I would get on home before it gets worse. So, I go REALLY slow and keeping the RPM's down. The car didnt seem to lose any power or anything. I didnt notice a change in the way it drove, performance wise. Well about 1/2 mile before I got home the car just died. Just shut off and coasted to a stop. Car wont turn over now. The started hits hard, but does nothing after that. Does anybody have any idears on what it might be?? Thank you.

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[SaturdaysGS]

Sounds like what happened to me, and it was the flexplate.

 

[sr71_rgl]

Could be a lot of things but flexplate would be the cheapest. What I did was remove the starter and try to turn the flexplate 1 tooth at a time. I used a small pry bar I had. Anyway, I got to turn about 3/4ths of the way before it bound completely. Right now Pictor's looking at it...I hope its just the FP. I'll let u know.

 

[ShwoffGTP]

we are going to try and look at it tonight. We are hoping its just a flexplate. If it is anything major I am fixing the car, and it will be gone. Going to buy something more mod friendly.

 

[J.E.T.]

Evem if it's the flexplate, it should still start, right?? Or is my logic completely off...?

 

[SaturdaysGS]

When my flexplate cracked/broke it turned off the engine, and when I went to try to start it the starter wouldnt turn it over so the engine wouldnt turn over.

 

[ShwoffGTP]

Originally posted by SaturdaysGS@Jun 20 2005, 02:59 PM
When my flexplate cracked/broke it turned off the engine, and when I went to try to start it the starter wouldnt turn it over so the engine wouldnt turn over.

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Sounds like what mine is doing...did it make any type of noise before it went??

 

[CoolGTX]

<<<<<<puts this in his memory bank.

 

[SaturdaysGS]

Yep it sounded like metal banging around, and the engine still had performace, then when it "broke completely" it sounded like something broke free.

 

[GTPictor]

sounds like u locked the motor up. the last two cars i have repaired had that same problem and both lost piston/rods. BTW Nick you one head is fubared and the block is most likley no good ive got pics for you so call me.

 

[ShwoffGTP]

Well this is what we found out. Couple of things wrong. 1st thing, somehow I have a dead battry! So, as we were trying to jump it we finally got enough juice through it to turnover, but not start. When it goes to turn over we get this really loud scratching sound from the flexplate. Like nails on a chalkboard. Not cool. The motor isnt locked up because we could turn it from the flexplate and crank pulley. Now what does this sound like to you guys?

 

[sr71_rgl]

Originally posted by ShwoffGTP@Jun 20 2005, 10:43 PM
Like nails on a chalkboard.  Not cool.  The motor isnt locked up because we could turn it from  the flexplate and crank pulley.  Now what does this sound like to you guys?

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One of the 3 flexplat bolts either backed out or broke and is gouging its housing as it spins. BTW...were you spraying the alky when it broke?

 

[sr71_rgl]

Originally posted by GTPictor@Jun 20 2005, 06:56 PM
sounds like u locked the motor up. the last two cars i have repaired had that same problem and both lost piston/rods. BTW Nick you one head is fubared and the block is most likley no good ive got pics for you so call me.

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:angry:

 

[SaturdaysGS]

Hmm well.. i'll take your word for it Pictor, you dissect these engines, I just went by what I was told (which wasnt much). I just know that the flexplate cracked on me, it was towed, replaced, started up, then told the engine was still making a racket, so they put in a remaned short? block. I just figured (since I wasnt told specifics) that since I was beating the crap outta the car the whole day (might have even been on 87 octane since the dealer may have been cheap) that it was chipped piston(s) they heard, they never really told me what was wrong there.

They=GM

 

[ShwoffGTP]

Originally posted by sr71_rgl+Jun 20 2005, 11:37 PM-->

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@Jun 20 2005, 10:43 PM
Like nails on a chalkboard.  Not cool.  The motor isnt locked up because we could turn it from   the flexplate and crank pulley.  Now what does this sound like to you guys?

[snapback]88625[/snapback]​

One of the 3 flexplat bolts either backed out or broke and is gouging its housing as it spins. BTW...were you spraying the alky when it broke?

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Thats what we are thinking also. Whats the easiest way to replace the flexplate?? I am hoping I can scrounge up enough money for the ZZP but I dont know if I can. And I was not spraying the alky at the time it broke.