[sircampsalot]

Hello, I just got my First corvette today and think i might have gotten screwed... Hopefully you guys can help me figure out a problem. I traded my pickup for a 1998 vette and it came with no warranty it has 93,000 miles on it but looks to be well maintained and showed a good carfax. It ran great today bringing it home and riding around a bit there was no noise that i couldnt figure out what it was until i got in it tonight to go to the store and i stopped at a red light and noticed a clanking noise coming from under the car while sitting at the red light. It is kind of like a rod knock in an engine but also sounds like a whirring noise like something in the tranny...? It does it while its driving and while ideling, it changes pitch when i race the engine. I'm thinking maybe it could be the tourqe converter but not sure. Anyone had this happen to them? or can help me try and figure out where i should look? I know its hard to find out whats wrong with just my words about sounds but any help would be appreciated. I hope i didnt get a clunker:crybaby:

 

[sircampsalot]

After looking in other forums it seems some others have had a rattling sound like im having and it was the Torque Tube bearings...I will see if i can see anything under there that will jump out at me that that is the problem. I wonder how hard it is to change these bearings?

 

[sircampsalot]

Well No one has even attempted to help on this situation lmao thanks guys, i see i came to the right place. Well, just so in the future if anyone else has this same issue i will tell you what the problem was. It was the Harmonic Balancer. it is coming apart and the Pully is rubbing against the engine making the noise. i'll post a pic of what it looks like in my pics.

 

[rmo1956]

I appreciate the heads up on that. I've not heard of that problem, but then I'm not a mechanic either.

 

[soggysailor]

not an uncommon issue.
Also it is a bit of work to replace . There are quite a few how to's if you look and want to do it yourself.
good luck on the repair.

 

[Bucwheat]

My C5 had a slight knock ,don't worry about it,I always pushed mine hard and never had a problem.

 

[[email protected]]

The LS1 is known for piston slap.. Its a result of the engine building techniques used now.. Pistons are no longer "MATCHED" with bore, during assembly , .and the pistons short height and composition .. There are Tech Service Bulletins on this if you google it. If its not using a lot of oil, run it

 

[vettex2]

Well No one has even attempted to help on this situation lmao thanks guys, i see i came to the right place. Well, just so in the future if anyone else has this same issue i will tell you what the problem was. It was the Harmonic Balancer. it is coming apart and the Pulley is rubbing against the engine making the noise. i'll post a pic of what it looks like in my pics.

I just saw this.......For something like you describe , YOU need to inspect
We can't diagnose something like that over the internet.Some problems are like that.
We help each other all the time. It's what we do.:abduct:

 

[[email protected]]

sorry no one jumped to your rescue Sircamp... Like Ex said some things you have to do yourself.. noises can be many things .. some are common, some are the exception. Everyone here tries to help, I think most of us missed your post .. I only noticed Bucwheats comment on his 98 knocking for years .. common... piston slap

 

[gmcginnis]

Torque Tube Rattle

I was looking for some advice about further diagnosis and repair. C6 with 94,000 all black convt. I love it.