Mike "Wuzzy121". Rest in peace, brother

Go Back   Tacoma World Forums > Tacoma Discussion > Tacoma Videos

Notices

Whistle from Power Brake Booster?

Reply
 
Thread Tools Search this Thread
Old 08-30-2010, 01:19 AM   #1
"I Brake for Tailgaters"
prerunnerSD is one of the sharper tools in the shedprerunnerSD is one of the sharper tools in the shedprerunnerSD is one of the sharper tools in the shedprerunnerSD is one of the sharper tools in the shedprerunnerSD is one of the sharper tools in the shedprerunnerSD is one of the sharper tools in the shedprerunnerSD is one of the sharper tools in the shedprerunnerSD is one of the sharper tools in the shedprerunnerSD is one of the sharper tools in the shedprerunnerSD is one of the sharper tools in the shedprerunnerSD is one of the sharper tools in the shed
 
prerunnerSD's Avatar
Name: Jonathan
Joined: Sep 2009, #22428
Location: Northeast USA
Age: 32
Gender: Male
Posts: 226
prerunnerSD's Tacoma Gallery
Whistle from Power Brake Booster?

I hear a high pinched humming sound coming from under hood of car, started when I depressed the brake and now happens nearly all the time, goes away when I accelerate/ have gas peddle depressed. Brakes seem to be working fine otherwise. What should I do?

http://www.youtube.com/watch?v=y5jBPvqtk_s
  Reply With Quote
Old 08-31-2010, 12:11 PM   #2
Senior Member
Hiatt1991 is one of the sharper tools in the shedHiatt1991 is one of the sharper tools in the shedHiatt1991 is one of the sharper tools in the shedHiatt1991 is one of the sharper tools in the shedHiatt1991 is one of the sharper tools in the shedHiatt1991 is one of the sharper tools in the shedHiatt1991 is one of the sharper tools in the shedHiatt1991 is one of the sharper tools in the shedHiatt1991 is one of the sharper tools in the shedHiatt1991 is one of the sharper tools in the shedHiatt1991 is one of the sharper tools in the shed
 
Hiatt1991's Avatar
Name: Hiatt
Joined: Aug 2010, #41917
Location: Flagstaff, AZ
Age: 23
Gender: Male
Posts: 8,135
Hiatt1991's Tacoma Gallery
Send a message via MSN to Hiatt1991
How interesting. It sounds like air rushing. Sorta like a jet. Maybe there is a loose connection somewhere or a rip?
  Reply With Quote
Old 08-31-2010, 12:28 PM   #3
Living vicariously through myself
mjp2 is one of the sharper tools in the shedmjp2 is one of the sharper tools in the shedmjp2 is one of the sharper tools in the shedmjp2 is one of the sharper tools in the shedmjp2 is one of the sharper tools in the shedmjp2 is one of the sharper tools in the shedmjp2 is one of the sharper tools in the shedmjp2 is one of the sharper tools in the shedmjp2 is one of the sharper tools in the shedmjp2 is one of the sharper tools in the shedmjp2 is one of the sharper tools in the shed
 
mjp2's Avatar
Name: Milton Juevos Portimous II
Joined: Feb 2007, #924
Location: NJ
Gender: Dude
Posts: 17,034
mjp2's Tacoma Gallery
Simplified for the sake of explanation, the brake booster contains a rubber diaphragm. On one side is a vacuum, and on the other it's normal ambient pressure. When you press on the brakes, that vacuum helps pull the brake linkage so you don't have to step as hard on the pedal.

You may have a leak inside the brake booster. Small enough to not completely lose the vacuum, but big enough to make noise. Might just be time for a new booster.
  Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
brake booster shortage Armyfocus 2nd Gen. Tacomas 0 11-19-2011 08:21 AM
seafoam brake booster or vacuum line? x2468 1st Gen. Tacomas 4 06-25-2011 08:53 AM
Brake booster? malander Performance and Tuning 3 05-07-2011 08:04 PM
Master Cylinder and Brake Booster jarvis210 2nd Gen. Tacomas 0 10-12-2010 09:51 PM
Brake Booster Line mws4ua 2nd Gen. Tacomas 2 04-30-2009 11:21 AM


Copyright © 2014 Tacoma Forum. Tacoma World is not owned by, or affiliated with Toyota Motor Corporation.