Belt Squeal - BMW Forum -

3-Series (E21, E30) Chat relating to the BMW 3-Series from 1975-1983 and 1984-1991 line. Specific models: BMW 315, BMW 316, BMW 318, BMW 318i, BMW 320/4, BMW 320i, BMW 320/6, BMW 323i, BMW 320i. E30 Family models include: BMW 325e, BMW 325i, BMW 325is, BMW 325ix.

LinkBack Thread Tools Display Modes
post #1 of 2 (permalink) Old 03-02-2006, 07:14 PM Thread Starter
3rd Gear Member
Join Date: Jul 2004
Location: Poquoson, VA
Posts: 591
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Bear is an unknown quantity at this point
(Thread Starter)
Belt Squeal

I have a belt squeal at at start up on my 1990 325ic and I thought it was the alternator so I tightened that belt but it appears to be coming from the AC compressor belt. If the AC clutch is bad will it momentyarully seize and allow the belt to slip (I need to do AC work to replace receiver/dryer so I am not concerened if my compressor clutch is bad after all it is 16 years old).
Bear is offline  
Sponsored Links
post #2 of 2 (permalink) Old 03-09-2006, 01:03 PM
77th Gear Member
325eXTATIC's Avatar
Join Date: Mar 2005
Location: See at ell! aka HOME!
Posts: 553
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
325eXTATIC is a glorious beacon of light 325eXTATIC is a glorious beacon of light 325eXTATIC is a glorious beacon of light 325eXTATIC is a glorious beacon of light 325eXTATIC is a glorious beacon of light
a faulty clutch could do a number of things.... On various cars I have owned or worked on, the Compressor clutch has failed engaged (on all the time) on one of my first gen. RX7's, failed disengaged (off all the time) on a friend of mine's Buick somethingorother, and failed intermittently (on and off without any real pattern) which turned out to be an electrical connection issue and easier to fix, on another friends Miata. So some further investigation is probably warranted to determine if your compressor clutch is failing or not. But a way to quiet your belts if they squeal for this or that reason, is this stuff you should be able to find at any auto parts store called "Belt Dressing" and it basically just sprays on your belts while you have the engine running, and it creates a sticky film on the belt, making it grip to the pulley's more firmly, therefor no squeal!
If it turns out that your compressor clutch is fine, your belts are most likely out of line, which could be the result any number of things, but if that is the case, Belt Dressing (made by STP maybe?) will help a LOT

Josh W.

Not currently on the Bimmer kick. Drivin' a 2003 Silver Civic at the moment, but I am STILL the Founding Member of the "325eXTATIC You're my hero" club.
Originally Posted by <b>superdeadman</b><br>Josh W. IS my hero!

Originally Posted by <b>JoeMadoo</b><br>325eXTATIC, you're my hero...
Originally Posted by <b>Moosepuck</b><br>Oh yeah...'re my hero...
Originally Posted by <b>e30dream</b><br>325eXTATIC....youre my hero.
325eXTATIC is offline  
Sponsored Links

  BMW Forum - > BMW Model Specific Forums > 3-Series (E21, E30)

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
User Tag List

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Similar Threads
Thread Thread Starter Forum Replies Last Post
Cam belt Timmo 3-Series (E21, E30) 2 10-04-2005 04:08 PM
timing belt change and mechanics in miami träumer 3-Series (E21, E30) 6 10-03-2005 04:44 PM
Broken Timing Belt?? jaymz 3-Series (E21, E30) 12 10-17-2004 09:22 PM
Passenger Side Seat Belt Install YoungExec728 3-Series (E36) 1 10-13-2004 01:34 AM
Seat belt warning Yellanugen 5-Series (E12,E28, E34, E39, E60) 0 09-16-2004 10:36 AM

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 On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome