My car is making bad noises!!!!

[boostedgtp13]

Ok i just installed my mail order overkill pcm yesterday drove it for a few while not beating on it, then i did a few WOT runs and it was fine, ran great, I take it for a ride this afternoon and it runs fine soo i put it in performance mode and i do a few WOT runs and everythings fine, then going up a street normally and this is what i hear. There is no SES light on and it seems to shift fine i guess. If it would help more i will take another vid of it driving. I think it may be the supercharger, i did change the s/c oil last night, i put in 2 bottles in.

[TorqueAutoMotiv]

thats ugly maybe flywheel issue or something along those lines could be a worse issue though

[Bio248]

super sounds like a cracked/broken flex plate. jack the car up, take off the covers, and inspect. you'll know if its your problem in 5 seconds.

[beckys2000gt]

oh man, that dont sound good AT ALL!

[Bio248]

it not knocking with a deep, bottom end knock so i doubt thats your problem. what is your oil pressure?

its sounds like a broken flex plate.

[Swash]

Given the sound when you rev - x3 on the flexplate.

-Swash

[Rather B Blown]

x4 thats exactly what it sounded like when my flexplate broke on my gf's blazer

[boostedgtp13]

super sounds like a cracked/broken flex plate. jack the car up, take off the covers, and inspect. you'll know if its your problem in 5 seconds.

where are the covers located ? could it be the s/c ? would taking the belt off rule that out ? i did empty two bottles of gm s/c fluid in, doesnt it only take 1 1/2 bottles ? i have no way of knowing my oil pressure

well i took of my s/c belt and there is no play in the pulley soo it cant be the coupler.

[TorqueAutoMotiv]

its the flex plate the cover is where the engine meets the trans under the car next to the starter

[boostedgtp13]

i dont know what cover, can you get me a pic please! If it's the flexplate its not expensive to replace its just gonna be a pita to replace. It's a gm goodwrench replacement tranny it cant be too old.

[TorqueAutoMotiv]

flex plates on the engine so its probably just as old as the engine if you jack the front end up and look at the starter you will see a plastic cover next to it you actually have to be under the car looking up at it

i think there 3 or 4 bolts in it

[boostedgtp13]

Ok gotchya, well it looks like alot of people are saying flexplate soo i might get one from morad, well i wonder if it would hurt anymore to drive it down to the shop to have it installed, it's like 3 miles, i had to drive it 7 miles back home after i discovered the noise. Will the flexplate be all i need ?

[Bio248]

check it first! dont buy parts you dont need!

[boostedgtp13]

am i looking for broken teeth or what ?

[Bio248]

the entire plate will be cracked, not missing teeth. it will be cracked from one or more of the bolt holes out.

[boostedgtp13]

ok i will look for cracks when i get to it tomorrow. I'm guessing i have to put it in neutral to turn it with my hand

[Bio248]

use a flathead screwdriver to move it along, but i bet you wont have to move it far to see its cracked. just grab the edge of it and see if you can move it side to side.

[boostedgtp13]

Well if it's the flexplate the problem, i found them at zzp used for $40, but dont i have to use new flexplate bolts? well should i use them is the question. and if i do i dont see them at zzp.

[Bio248]

the flex plate bolts are TTY. you SHOULD replace them with new ones (stealership trip), but you probably could get away with using the old ones and some lock tight.

[boostedgtp13]

oh boy torque to yeild bolts, i'm sure they are pretty stretched out soo i should just go buy new ones.