It is currently Fri Nov 24, 2017 10:43 am

All times are UTC - 5 hours [ DST ]




Post new topic Reply to topic  [ 8 posts ] 
Author Message
 Post subject: A/C Compressor Grinding
PostPosted: Wed Oct 25, 2017 1:17 pm 
Offline
SLE Member
SLE Member
User avatar

Joined: Tue May 10, 2011 3:47 pm
Posts: 25
Year and Trim: 2000 Pontiac Bonneville SLE
Hey, All:

Got a 2000 SLE with the 3800 series F/I no S/C. My A/C compressor started grinding a few miles back, and from all appearances the bearing is shot (grinding noise and clutch plate continually engaged and clutch plate turning SLOWWWWWWLY). Since it's October I don't need the A/C for quite a while, but that grinding is driving me batsh*t crazy.

I saw in an older post that someone bypassed the A/C motor by installing a shorter serpentine belt until he could get the A/C motor fixed. Can you really do this? If you can, does anyone know the size of belt (or part number) that I'd need to accomplish this?

Or am I misdiagnosing the problem incorrectly to begin with? Any help you can offer is appreciated.

Thanks in advance.

E.


Top
 Profile  
 
PostPosted: Thu Oct 26, 2017 10:10 am 
Offline
Posts like an L67
Posts like an L67

Joined: Sun Aug 22, 2010 11:11 pm
Posts: 1235
Location: Ontario, Canada
Year and Trim: 2000 Bonniville SSEi L67
hi, so your saying the grinding is there when the compressor clutch engages? and when you unplug the compressor to disable it, the grinding stops?

your going to have to repair it sooner or later so I wouldnt mess with shorter belts.

_________________
poverty forces one to do unorthodox things

2000 SSEi
past rides:
1996 SSEi
1992 GTP
1987 Grand Am


Top
 Profile  
 
PostPosted: Fri Oct 27, 2017 3:28 pm 
Offline
SLE Member
SLE Member
User avatar

Joined: Tue May 10, 2011 3:47 pm
Posts: 25
Year and Trim: 2000 Pontiac Bonneville SLE
Thanks for the shout-back, 96SSEi:

Yeah, that clutch stays engaged, even after I pulled the power to the compressor (and I pulled the clutch fuse #26 under the hood as a second test, too.)

Regardless

(A) The clutch plate stays in the engaged position and rotates about once per second
(B) The ridged pulley spins as it should both with and without the belt.
(C) The compressor ass'y makes that offending noise and throws shavings any which-way I go.

Since I am going to replace the entire compressor after the winter thaw, (gotta save up for Christmas!) is it OK for me to back off the nut holding the clutch plate in place and fix it in an "un-engaged" position with something like spacers or (in a fit of pique) thread-lock?

As you can see, I'm a cheap SOB. I'd rather do it myself than come up with cash now ("I would rather pay you Tuesday for a Hamburger today.")

Your advice is welcome. Thanks in advance.

E.


Top
 Profile  
 
PostPosted: Fri Oct 27, 2017 5:02 pm 
Offline
GXP Member
GXP Member
User avatar

Joined: Tue Oct 19, 2010 7:45 am
Posts: 293
Location: New York
Year and Trim: 2004 Bonneville SE
You may want to consider a A/C Compressor By-Pass Pulley. It's sold on Rockauto (DORMAN 34196).

_________________
2004 Bonneville SE 151,xxx- 20% tint all around, 5% tint bar on windshield | 4500k DDM HID low | De-badged | Hardwired Passport 9500ix | FWI(inter-cooler piping) | FE2 Rear Sway Bar | Solid Motor Mount | 180* Stat | Firm Shift Kit

My old car(now brother's car) 1998 Bonneville SE 230,xxx- 20% tint all around
Other cars in family(only the Pontiacs)
- '92 Bonneville SE - '85 Grand Am - '73 Catalina - '67 Catalina
- '87 Bonneville SE - '82 6000 - '78 Catalina


Top
 Profile  
 
PostPosted: Fri Oct 27, 2017 9:04 pm 
Offline
Posts like an L67
Posts like an L67

Joined: Sun Aug 22, 2010 11:11 pm
Posts: 1235
Location: Ontario, Canada
Year and Trim: 2000 Bonniville SSEi L67
ok, sure, as long as the pulley stays secure, I would think that spacers are fine

_________________
poverty forces one to do unorthodox things

2000 SSEi
past rides:
1996 SSEi
1992 GTP
1987 Grand Am


Top
 Profile  
 
PostPosted: Tue Nov 14, 2017 8:29 pm 
Offline
SLE Member
SLE Member
User avatar

Joined: Tue May 10, 2011 3:47 pm
Posts: 25
Year and Trim: 2000 Pontiac Bonneville SLE
Hey 96 SSei and AJT2004:

Thanks for all of the help. I went the spacer route, since I'm gonna have to redo the A/C this spring. So far they're holding up just fine. There's no grinding or shaving.

AJT2004: Your suggestion for a bypass pulley is really going to help a friend of mine in Montana who has the same problem I had, but who never uses his A/C anyway. Thanks for the heads-up. You made me look like a genius.

Anyway, Thanks again.

E.


Top
 Profile  
 
PostPosted: Wed Nov 15, 2017 12:51 am 
Offline
Certified Bonneville Nut
Certified Bonneville Nut
User avatar

Joined: Tue May 27, 2008 8:53 am
Posts: 5230
Location: Las Cruces, NM
Year and Trim: 1993 Buick Park Avenue
1994 Buick Regal Custom
Sorry i didn't see this sooner. It's usually caused by corrosion in the clutch, and you should be able to adjust the airgap on the compressor to compensate

_________________
~Randall~
ImageImage

1993 Buick Park Avenue - 197k - Some odds and ends done - Simply won't die
1994 Buick Regal - 78k - Bone stock - Always ready for a good kicking
1990 Oldsmobile 88 - Gone to a better place


Top
 Profile  
 
 Post subject: A/C Compressor Grinding
PostPosted: Fri Nov 17, 2017 8:34 pm 
Offline
SLE Member
SLE Member
User avatar

Joined: Tue May 10, 2011 3:47 pm
Posts: 25
Year and Trim: 2000 Pontiac Bonneville SLE
Thanks again for all the help 96 SSei, AJT2004, and even RJolly87. Look for my next post under "transmission problem."


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 8 posts ] 

All times are UTC - 5 hours [ DST ]


Related topics
 Topics   Author   Replies   Views   Last post 
There are no new unread posts for this topic. the a/c compressor clutch is grinding.

mrrcom

2

467

Tue Jun 03, 2014 2:42 am

mrrcom View the latest post

There are no new unread posts for this topic. Horribly grinding rotor

TrueWildMan

8

1838

Tue Jun 10, 2008 12:23 am

TrueWildMan View the latest post

There are no new unread posts for this topic. Drivers window grinding

jedwards83

2

516

Wed Jul 27, 2011 9:26 pm

jedwards83 View the latest post

There are no new unread posts for this topic. Grinding Noise After Starting

jmusser218

0

402

Wed May 28, 2014 11:12 am

jmusser218 View the latest post

There are no new unread posts for this topic. Front wheel grinding sound + brake light

GerGa

12

468

Wed Dec 14, 2016 2:46 pm

jradke61 View the latest post

 


Who is online

Users browsing this forum: No registered users and 14 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Group


phpBB SEO