Question about Cars & Trucks
Vacume leak in brake booster or hose.
Posted on Aug 12, 2017
Whistling can be the brake pad wear onto the metal, could mean the pads have worn down uneven, or there is a problem with the disc or drum depending what is fitted. either way you need to have a look at the brakes to find the problem, can cause poor braking or no braking in the event you need to brake fast.
Posted on Aug 12, 2017
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Posted on Jan 02, 2017
From your description this appears to be a Brake servo issue.
The brakes are assisted by a vacuum created from the draw off the inlet manifold, it gives assistance too the brake pedal pressure by a large tank/cylinder mounted on the Bulkhead/firewall.
I feel that the sound you a hearing is air being draw into the Brake Servo from the foot pedal seal and the reason for fluctuation in the engine is the vacuum from the inlet manifold is being upset.
Attention I suspect should be addressed to the Brake servo/pedal seal or gaitor.
I hope this clarifies your thoughts?
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Posted on Jan 22, 2009
The last poster is absolutely correct. The Brake Booster is leaking engine vaccuum into the vehicle through the firewall. This is a fairly common issue on older Tributes. There is an updated Brake Booster and Gasket available from Mazda. I do suggest replacing both the booster and gasket but just a gasket may do. Good luck.
Posted on Jun 30, 2009
That sound you hear is coming from the Vauum Brake Booster...Sooner or later the Brake Pedal will get hard, because the seal inside of the Brake Booster is leaking..And the only way to repair it, is , to replace the Brake Booster...But also check your Vacuum Hose that is instaaled on your Brake Booster..It goes from the Brake Booster, which is behind the Master Cylinder...From there to the Intake Manifold...Just make sure that there are no cracks in that hose, and make sure it is on all the way...because if the hose is bad, then thats all you will have to replace....Goodluck...
Posted on Dec 07, 2009
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