S/C Gone BAD - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


2000-2005 Discuss your 2000-2005 Bonneville SE, SLE, and SSEi Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Reply
 
 
 
Thread Tools Search this Thread
Old 04-03-2005, 10:26 PM   #1
Junior Member
Posts like a Ricer Type-R
Thread Starter
 
Join Date: Jul 2004
Location: Bayamon and Mayaguez,Puerto Rico
Posts: 19
Thanks: 0
Thanked 0 Times in 0 Posts
Ricky5.0L is on a distinguished road
Default */C Gone BAD

Hi guys. long time since the last time I was arround here. Last night, the bonnie started making a noice in the engine, specially in idle. No shaking nor fisfireing. My dad and I removed the */C belt but the noise continued. It made a clank noise when the engine starts and then sounds like a loose piece of metal hitting something. Tonight, we put the belt back on, thinking the SC was OK, but the sound worsened. We removed it again and the sound almost went away, altough it was still there. And the sound comes from the top-front of the engine (right side of the car). Right now the car has the SC belt removed, because my mom needs the car to go to work tomorow, and my dad is going to call the technician to se what can he do. But I wanted to ask the experts first.

Any idea? The car have 76k or 78k miles (cant remember). Is it expensive to repair? Can be anithing else? It is the same of the Grand Prix? I thanks in advance for the help.
Ricky5.0L is offline   Reply With Quote
Old 04-03-2005, 11:19 PM   #2
Senior Member
True Car Nut
 
Join Date: May 2003
Location: Holt, MI & Lima, OH
Posts: 3,022
Thanks: 0
Thanked 0 Times in 0 Posts
dbtk2 is on a distinguished road
Default

It makes sense that it would be the coupler, but that doesn't explain the noise it makes with the belt off. If it is the coupler, then it would actually be just fine to drive with the belt on, it will just be noisy. The coupler is fairly easy to replace and I think a new one costs like $79 or so from ZZP. (GM doesn't sell one IIRC)

Shawn
dbtk2 is offline   Reply With Quote
Old 04-03-2005, 11:32 PM   #3
Senior Member
Certified Car Nut
 
Join Date: Mar 2003
Posts: 12,432
Thanks: 0
Thanked 0 Times in 0 Posts
J Wikoff is on a distinguished road
Default

With the SC belt off, the SC will make absolutely no noise at all because it is not moving. I suspect a bad balancer pulley (mine sounded higher on the engine, just because the noise carries through the engine) or maybe the tensioner.
J Wikoff is offline   Reply With Quote
Old 04-04-2005, 12:12 AM   #4
Senior Member
True Car Nut
 
Join Date: Sep 2004
Location: Farmington, Minnesota =MWBF '05 SURVIVOR= =CEBF '06 SURVIVOR= =August '06 COTM=
Posts: 9,130
Thanks: 0
Thanked 0 Times in 0 Posts
LakevilleSSEi is on a distinguished road
Default

Quote:
Originally Posted by dbtk2
It makes sense that it would be the coupler, but that doesn't explain the noise it makes with the belt off. If it is the coupler, then it would actually be just fine to drive with the belt on, it will just be noisy. The coupler is fairly easy to replace and I think a new one costs like $79 or so from ZZP. (GM doesn't sell one IIRC)

Shawn

ZZP couplers are $36. FYI

With the belt off the */C take and turn the pulley by hand and see if it'* making the same noise......Otherwise if it still makes the noise with the belt off and the car running I am with Jwiloff....check your harmonic balancer (crank pulley)
LakevilleSSEi is offline   Reply With Quote
Old 04-04-2005, 01:21 AM   #5
Junior Member
Posts like a Ricer Type-R
Thread Starter
 
Join Date: Jul 2004
Location: Bayamon and Mayaguez,Puerto Rico
Posts: 19
Thanks: 0
Thanked 0 Times in 0 Posts
Ricky5.0L is on a distinguished road
Default

Quote:
Originally Posted by jwikoff99
With the SC belt off, the SC will make absolutely no noise at all because it is not moving.
We thought the same thing. Thats the reason we removed the SC belt. But the noise continued. It is really loud to be the tensioner. We thought maybe something loose inside the SC. Maybe a bad bearing, shaft or something. Our knowledge about these cars isn't very extense. But anyway, your opinions give me more hope than I thought

PD. What exactly is the coupler?
Ricky5.0L is offline   Reply With Quote
Old 04-04-2005, 01:26 AM   #6
Senior Member
Certified Car Nut
 
Join Date: Mar 2003
Posts: 12,432
Thanks: 0
Thanked 0 Times in 0 Posts
J Wikoff is on a distinguished road
Default

The coupler mates the drive shaft with the rotor shaft. It kinda looks like a hockey puck with 6 holes. The drive shaft has three prongs on the end, as does the aligning rotor shaft.
J Wikoff is offline   Reply With Quote
Old 04-04-2005, 05:16 PM   #7
Junior Member
Posts like a Ricer Type-R
Thread Starter
 
Join Date: Jul 2004
Location: Bayamon and Mayaguez,Puerto Rico
Posts: 19
Thanks: 0
Thanked 0 Times in 0 Posts
Ricky5.0L is on a distinguished road
Default

Quote:
Originally Posted by LakevilleSSEi
Quote:
Originally Posted by dbtk2
It makes sense that it would be the coupler, but that doesn't explain the noise it makes with the belt off. If it is the coupler, then it would actually be just fine to drive with the belt on, it will just be noisy. The coupler is fairly easy to replace and I think a new one costs like $79 or so from ZZP. (GM doesn't sell one IIRC)

Shawn
ZZP couplers are $36. FYI

With the belt off the */C take and turn the pulley by hand and see if it'* making the same noise......Otherwise if it still makes the noise with the belt off and the car running I am with Jwiloff....check your harmonic balancer (crank pulley)
A broken balancer is not supposed to make vibrate the engine? At least that'* how I knew the one on my mustang was shot. The whole car was vibrating. .With the bonneville, the sound is kind of inconsistent. Some times if you turn on the A/C it stops for a moment, sometimes it doesn't. With the SC belt it was loud and continuous, but without it is less continous. I'ts really an enigma.
But anyway, I'll keep you posted about anything that happens. Thanks.
Ricky5.0L is offline   Reply With Quote
Old 04-04-2005, 06:37 PM   #8
Senior Member
True Car Nut
 
Join Date: Sep 2004
Location: Farmington, Minnesota =MWBF '05 SURVIVOR= =CEBF '06 SURVIVOR= =August '06 COTM=
Posts: 9,130
Thanks: 0
Thanked 0 Times in 0 Posts
LakevilleSSEi is on a distinguished road
Default

Quote:
Originally Posted by Ricky5.0L
Quote:
Originally Posted by LakevilleSSEi
Quote:
Originally Posted by dbtk2
It makes sense that it would be the coupler, but that doesn't explain the noise it makes with the belt off. If it is the coupler, then it would actually be just fine to drive with the belt on, it will just be noisy. The coupler is fairly easy to replace and I think a new one costs like $79 or so from ZZP. (GM doesn't sell one IIRC)

Shawn
ZZP couplers are $36. FYI

With the belt off the */C take and turn the pulley by hand and see if it'* making the same noise......Otherwise if it still makes the noise with the belt off and the car running I am with Jwiloff....check your harmonic balancer (crank pulley)
A broken balancer is not supposed to make vibrate the engine? At least that'* how I knew the one on my mustang was shot. The whole car was vibrating. .With the bonneville, the sound is kind of inconsistent. Some times if you turn on the A/C it stops for a moment, sometimes it doesn't. With the SC belt it was loud and continuous, but without it is less continous. I'ts really an enigma.
But anyway, I'll keep you posted about anything that happens. Thanks.
Hrmmmm Well seeing how having the A/C on or off or the */C belt on or off is imposing different loads on the engine, if it was the balancer I would definantly expect the symptoms to be different in each case.

But a balancer should make your car vibrate if it'* way bad....seeing how that'* what keep your crankshaft in balance. Your'* could just be in the begining stages?
LakevilleSSEi is offline   Reply With Quote
Old 04-08-2005, 11:59 AM   #9
Junior Member
Posts like a Ricer Type-R
Thread Starter
 
Join Date: Jul 2004
Location: Bayamon and Mayaguez,Puerto Rico
Posts: 19
Thanks: 0
Thanked 0 Times in 0 Posts
Ricky5.0L is on a distinguished road
Default

Hey guys. UPDATE:

I arrived to my home today, so I haven't checked the car yet, but my dad tooked it to the shop and the guy told him that in fact it wasn't the supercharger. He inspected the balancer, the water pump and the tensioners and they all looked OK. He thinks that it could be the timing chain tensioner or something related, as the sound depends on the load on the engine. He told us to keep checking if we found the problem, but if not, he is going to take it on monday.

Does it sound like something reasonable? Any options?
Ricky5.0L is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Bad, bad, bad, bad vibrations.... SilverSleeper8704 2000-2005 11 07-30-2010 06:42 AM
Reuters gone mad! Passports ablaze! Quotes gone wrong! radomirthegreat Lounge 2 03-24-2008 08:05 AM
Here Yesterday....Gone Today - Pontiac Dealership is GONE!!! Ol' Timer Lounge 5 04-06-2007 05:48 PM
BAD one liners. Bad, really really bad, but still funny. BonnieBrougham Lounge 3 12-16-2004 06:38 PM
SC Cover MOD, Great IDEA gone bad kinda... with pic Nytro67 Performance, Brainstorming & Tuning 10 05-07-2003 08:02 AM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 04:18 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.