Harmonic Balancer wobble - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

siriusdish · 03-26-2010, 04:07 PM

Had the Camaro 2ss at a buddy's shop and he noticed that the harmonic balancer was wobbling and not smooth. Started his 6.1 Hemi up and it was smooth. Took it to the deal and they looked it over said it was fine, had everyone in the shop look at it. Made them start the one in the show room and was smooth. Said they had to order parts for it and will call when they come in.
Ok, on to another issue of concern another problem have a question on is anyone notice a backfire or pop from the After mark mufflers from Gm, 3 inch tips. Is this from the motor being off balance or something else? back pressure maybe? That has been going on since the car was picked up but not all the time but does do it.

Thank you

2010 2-Tone · 03-26-2010, 04:15 PM

That should be a popping when you decel. That is normal. You can have it tuned out if it bothers you.

siriusdish · 03-26-2010, 04:22 PM

Quote:

Originally Posted by 2010 2-Tone

That should be a popping when you decel. That is normal. You can have it tuned out if it bothers you.

thanx.

siriusdish · 03-26-2010, 04:37 PM

Quote:

Originally Posted by ColdCamaroSS

My wobbles too...did the same thing, went to the dealer and started up another SS...it also wobbles (I think mine wobbles a little worse).

I searched this forum and the other "LS3" vehicle forums and it seems pretty common for a little bit of wobble on LS series engines. (Or shall I say V8 GM engines). I guess the GM balancer isn't that great to begin with but shouldn't give you any reliability problems even with the wobble. (some also say they are straight and true and your eyes are playing tricks on you.

Please keep us posted on the new pulley and if it solves your problem (my understanding is aftermarket pulleys eliminate the wobbling effect but would be cool to know if a GM part fixes it as well)

Thank you, will keep you posted!

camarorick · 03-26-2010, 06:09 PM

I noticed the same wobble on mine last summer..... Went to the dealer, and looked at 2 other LS3's. They were all the same.

I don't think this is actually a harmonic balancer, from what I can see, it looks like a regular pulley. I was told that the LS3 was internally balanced

, can someone confirm ?

HeavyD · 03-26-2010, 07:20 PM

Mine has some wobble. Seems to be kinda common. I made a video.

siriusdish · 03-26-2010, 08:04 PM

Quote:

Originally Posted by HeavyD

Mine has some wobble. Seems to be kinda common. I made a video.

No its way worse then that.

ColdCamaroSS · 03-26-2010, 08:28 PM

Quote:

Originally Posted by HeavyD

Mine has some wobble. Seems to be kinda common. I made a video.

I would say mine is on par with yours (maybe just a little worse though)

siriusdish · 03-27-2010, 10:18 PM

Still waiting for the call from dealer. Will post what the outcome was.

siriusdish · 04-08-2010, 11:48 AM

Took car to dealer today. They called back and said that they do not have the part to fix! They ordered a new balancer and they found out it was not the balancer but the bolt is bad! WTF! So they have to order the bolt now geeeeeeeeeeeeeeeee. They said to come pick it up b/c they can not get the bolt till next week. Then called back and said just to leave it there b/c they can fix it tommorrow.

ColdCamaroSS · 04-08-2010, 11:51 AM

Quote:

Originally Posted by siriusdish

Took car to dealer today. They called back and said that they do not have th part to fix! They ordered a new balancer and they found out it was not the balancer but the bolt is bad! WTF! So they have to order the bolt now geeeeeeeeeeeeeeeee. They said to come pick it up b/c they can not get the bolt till next week. Then called back and said just to leave it there b/c they can fix it tommorrow.

Bad bolt huh? Interesting. Let us know how it turns out.

siriusdish · 04-08-2010, 12:10 PM

Quote:

Originally Posted by ColdCamaroSS

Bad bolt huh? Interesting. Let us know how it turns out.

No problem

HeavyD · 04-08-2010, 04:30 PM

I have heard the bolt is bent, loose or broken before. I did grab mine, seemed tight at least.

Texhawk · 04-08-2010, 06:00 PM

This is a well known problem on Corvette engines. In some cases the bolt backs out and the pulley tries to walk off the shaft, and in other cases the webbing between the pulley and the hub deteriorates causing it to wobble.

http://forums.corvetteforum.com/c6-t...lley-help.html

03-26-2010, 04:07 PM	#1
siriusdish Drives: 2010 Camaro L99 Join Date: Oct 2009 Location: Erie PA Posts: 1,226	Harmonic Balancer wobble Had the Camaro 2ss at a buddy's shop and he noticed that the harmonic balancer was wobbling and not smooth. Started his 6.1 Hemi up and it was smooth. Took it to the deal and they looked it over said it was fine, had everyone in the shop look at it. Made them start the one in the show room and was smooth. Said they had to order parts for it and will call when they come in. Ok, on to another issue of concern another problem have a question on is anyone notice a backfire or pop from the After mark mufflers from Gm, 3 inch tips. Is this from the motor being off balance or something else? back pressure maybe? That has been going on since the car was picked up but not all the time but does do it. Thank you Last edited by siriusdish; 04-08-2010 at 01:00 PM.

04-08-2010, 11:48 AM	#10
siriusdish Drives: 2010 Camaro L99 Join Date: Oct 2009 Location: Erie PA Posts: 1,226	Took car to dealer today. They called back and said that they do not have the part to fix! They ordered a new balancer and they found out it was not the balancer but the bolt is bad! WTF! So they have to order the bolt now geeeeeeeeeeeeeeeee. They said to come pick it up b/c they can not get the bolt till next week. Then called back and said just to leave it there b/c they can fix it tommorrow. Last edited by siriusdish; 04-08-2010 at 12:15 PM.

04-08-2010, 06:00 PM	#14
Texhawk Drives: 69Camaro,87IROC,96 SS,Z06&Stingray Join Date: Apr 2010 Location: Longview, Tx Posts: 275	This is a well known problem on Corvette engines. In some cases the bolt backs out and the pulley tries to walk off the shaft, and in other cases the webbing between the pulley and the hub deteriorates causing it to wobble. http://forums.corvetteforum.com/c6-t...lley-help.html Last edited by Texhawk; 04-08-2010 at 06:36 PM.

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03-26-2010, 04:15 PM	#2
2010 2-Tone Drives: 2010 RY 2SS with Custom Stripes Join Date: Mar 2009 Location: Jennings, La. Posts: 2,220 View My Garage	That should be a popping when you decel. That is normal. You can have it tuned out if it bothers you.

03-26-2010, 06:09 PM	#5
camarorick Drives: . Join Date: Jan 2008 Location: . Posts: 2,166	I noticed the same wobble on mine last summer..... Went to the dealer, and looked at 2 other LS3's. They were all the same. I don't think this is actually a harmonic balancer, from what I can see, it looks like a regular pulley. I was told that the LS3 was internally balanced , can someone confirm ?

03-27-2010, 10:18 PM	#9
siriusdish Drives: 2010 Camaro L99 Join Date: Oct 2009 Location: Erie PA Posts: 1,226	Still waiting for the call from dealer. Will post what the outcome was.

04-08-2010, 04:30 PM	#13
HeavyD Drives: 1SSRS RY L99 Join Date: Aug 2009 Location: Ontario Posts: 1,323	I have heard the bolt is bent, loose or broken before. I did grab mine, seemed tight at least.