Soft Brake Vac. Line - 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 03-02-2011, 04:59 PM   #1
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Jan 2010
Location: Charleston, SC
Posts: 61
Thanks: 0
Thanked 0 Times in 0 Posts
D88RIII is on a distinguished road
Question Soft Brake Vac. Line

OK, so I am finally doing some 'housecleaning' under the hood of my '94 Olds LSS w 3800.

My brake fluid was low, so I filled it to the seam with DOT3- I am assuming that the seam is the fill line??? Also, the fluid in there was pretty dirty-looking.

I was giving the brake vac lines a once over and I noticed that there are 3 short lines that need immediate replacement - they are dry-rotting/cracking. 2 of the 3 are U-shaped and stacked atop each other.

I had the car idling in park (while checking AT fluid). The top U-shape vac line was 'collapsed'; the bottom one felt like it had air coursing through it. Is this normal for idling in park, or is the collapsed line indicative of a bigger problem?

Thanks!
D88RIII is offline   Reply With Quote
Old 03-02-2011, 05:01 PM   #2
Retired Senior Admin

Expert Gearhead
 
Danthurs's Avatar
 
Join Date: May 2006
Location: Sheboygan Wisconsin
Posts: 29,661
Thanks: 0
Thanked 16 Times in 13 Posts
Danthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to all
Default

If the hose has collapsed then it'* shot, just replace it.
Danthurs is offline   Reply With Quote
Old 03-02-2011, 09:37 PM   #3
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Jan 2010
Location: Charleston, SC
Posts: 61
Thanks: 0
Thanked 0 Times in 0 Posts
D88RIII is on a distinguished road
Default

The more I looked, the more rotten, gummy hoses. Plus the heater bypass valve is toast, getting a new one tomorrow. Will replacing these hoses help the performance any, or are these lines only put in use when the heater is on?
D88RIII is offline   Reply With Quote
Old 03-02-2011, 09:44 PM   #4
Senior Member
True Car Nut
 
rjolly87's Avatar
 
Join Date: Jun 2003
Location: Las Cruces, NM
Posts: 6,855
Thanked 298 Times in 246 Posts
rjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant future
Default

The only improvement you will notice would be any vacuum leaks that were caused by these hoses. That is not counting the effects of proper vacuum getting to the equipment now.
rjolly87 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
vapor canister purge valve vac line 01 Bonny krank 2000-2005 1 09-02-2011 08:06 AM
AC/Heater Tank Vac Line... broke... help tlsheff 1992-1999 6 02-06-2009 12:51 AM
BCA and BCS Vac line connections...? fdh01bonneville Forced Induction 1 04-01-2007 07:10 PM
Looking for Vac line information MooseGundr 1992-1999 4 05-30-2006 05:00 PM
Broke a vac line or? Chinski 1992-1999 9 01-02-2005 03:44 PM


Tags
brake vacuum

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 09:23 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.