Brake proportioning valve - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Reply
 
 
 
Thread Tools Search this Thread
Old 11-02-2007, 08:37 AM   #11
DINOSAURUS BOOSTUS

Expert Gearhead
 
BillBoost37's Avatar
 
Join Date: Mar 2005
Location: Enfield, CT
Posts: 41,391
Thanks: 0
Thanked 0 Times in 0 Posts
BillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of light
Default

Badnit deleted his and hasn't seen any issues from it yet.

Sam... A check valve doesn't make sense because brake fluid would need to return when the brakes release.

It was always thought to be a proportioning valve, when Badnit deleted his w/o problems we found it odd. Makes one wonder..is this GM'* sick idea of a union?
BillBoost37 is offline   Reply With Quote
Old 11-02-2007, 08:46 AM   #12
Senior Member
Posts like a Northstar
Thread Starter
 
Join Date: Apr 2006
Location: Dimondale, MI
Posts: 549
Thanks: 0
Thanked 0 Times in 0 Posts
F14CRAZY is on a distinguished road
Default

Thanks guys. Bill'* got me convinced, that out it goes!
F14CRAZY is offline   Reply With Quote
Old 11-02-2007, 08:50 AM   #13
DINOSAURUS BOOSTUS

Expert Gearhead
 
BillBoost37's Avatar
 
Join Date: Mar 2005
Location: Enfield, CT
Posts: 41,391
Thanks: 0
Thanked 0 Times in 0 Posts
BillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of light
Default

Hang in there Crazy..

I mentioned...one member pulled it and hasn't had an issue. We know that rust is probably blocking the lines on Badnits car and creating it'* own proportion if that is what it is. I don't know for sure what it is and don't suggest deleting anything that might be necessary.

Anything brake related should be approached with a lot of caution before deleting. It doesn't matter if you can't get the car to move..but it sure is a big problem if the car won't stop.

It would be cruel if it was just a union..lol
BillBoost37 is offline   Reply With Quote
Old 11-02-2007, 11:36 AM   #14
Senior Member
True Car Nut
 
Join Date: Jul 2004
Location: Grand Rapids, Mi
Posts: 5,656
Thanks: 0
Thanked 0 Times in 0 Posts
Archon is on a distinguished road
Default

The newer GM cars have the proportioning valve as part of the master cylinder. The '93 Bonneville had the proportioning valves (those little cylinders) near the back wheels. They are there to equalize the pressure front to back. I think they cost me somewhere around $20. For proper brake operation, I'd suggest that you replace them.
Archon is offline   Reply With Quote
Old 11-02-2007, 11:40 AM   #15
Senior Member
True Car Nut
 
Join Date: Jan 2006
Location: NEBF:06,07 | NYBF:06,07 | ONBF:06,07 | CNBF:06 & more............
Posts: 8,029
Thanks: 0
Thanked 0 Times in 0 Posts
bandit is on a distinguished road
Default

Yes i have taken one out, Did not feel anything. then the other line went also, took out the other side.

So on my SE i have none in the rear...

I it does not feel any diffrent.

the only thing i know is, the rear breaks seem to get hotter and have taken out two sets of Drums so far. they start to warp.

If anyone can tell me where to get new ones and the part Number that will really be a big help. I have all ready tried two auto part stores and they dont have them.
bandit is offline   Reply With Quote
Old 11-02-2007, 12:36 PM   #16
Senior Member
True Car Nut
 
Join Date: Jul 2004
Location: Grand Rapids, Mi
Posts: 5,656
Thanks: 0
Thanked 0 Times in 0 Posts
Archon is on a distinguished road
Default

It was maybe 5 years back that I bought them, but I just went to my usual supplier (not a national chain) told him what I needed and he got them for me. If you run into problems, I can see if he can still get them, and I could mail them off to you.
Archon is offline   Reply With Quote
Old 11-02-2007, 05:03 PM   #17
Senior Member
Certified GM nut
 
Join Date: Oct 2006
Location: burb of detroit. 2 miles north of 8 mile Rd.
Posts: 2,028
Thanks: 0
Thanked 0 Times in 0 Posts
samueljackson is on a distinguished road
Default

[quote="BillBoost37"]Sam... A check valve doesn't make sense because brake fluid would need to return when the brakes release. quote]

yeah that wouldnt work, but when i had mine off, i used my blow gun and air only went thru one way. so from there i assumed it to be a check valve. hmmm. idk
samueljackson is offline   Reply With Quote
Old 11-02-2007, 09:17 PM   #18
Senior Member
Posts like a Northstar
Thread Starter
 
Join Date: Apr 2006
Location: Dimondale, MI
Posts: 549
Thanks: 0
Thanked 0 Times in 0 Posts
F14CRAZY is on a distinguished road
Default

Sorry to break the news to you guys, but I bought two of these earlier today (in stock at Glen Buege Buick/GMC)

F14CRAZY is offline   Reply With Quote
Old 11-03-2007, 12:51 AM   #19
Senior Member
Certified GM nut
 
Join Date: Oct 2006
Location: burb of detroit. 2 miles north of 8 mile Rd.
Posts: 2,028
Thanks: 0
Thanked 0 Times in 0 Posts
samueljackson is on a distinguished road
Default

thats good news. it ends my confusion. i thank you for the clarity. proportioning valve makes much more sense. how much were they?

i know i read something in the chiltons about the p.v being incorporated in the ms, that must have been for the newer years, as previously stated,

but hey, those chiltons only cover 20 years. much confusion can be made with that wide of coverage.
samueljackson is offline   Reply With Quote
Old 11-03-2007, 01:20 AM   #20
Senior Member
Posts like a Northstar
Thread Starter
 
Join Date: Apr 2006
Location: Dimondale, MI
Posts: 549
Thanks: 0
Thanked 0 Times in 0 Posts
F14CRAZY is on a distinguished road
Default

$47 something each
F14CRAZY is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Need a 2003 buick century brake system schematic, wondering about proportioning valve macdonaldtomw Buick 7 10-27-2014 07:44 PM
Purge valve solenoid or egr valve? SEXI SADI GMC/Chevrolet Truck/SUV 5 03-28-2012 12:18 PM
Break Line leaking at break modulator proportioning valve gigion 1992-1999 3 03-14-2007 01:58 PM
Brake line and proportioning Valve. Maymybonnieliveforevr 1992-1999 5 10-12-2006 02:34 PM
Brake Lines brake lines oh god brake lines disco_dotty 1987-1991 14 01-19-2005 08:38 PM


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 09:33 AM.


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.