Question about 1999 Chevrolet Tahoe

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Hard brake pedal hear air leaking when pedal pushed

Replaced brake pads and now here air or vac when I push brake pedal and pedal is hard to push

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When you press on the brake? Have your brake vacuum assist checked. It,s that bigspaceship looking thing between the brake master cylinder an firewall. good luck and be safe.

Posted on May 25, 2009

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  • Master
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Booster blown? if you ever hit the brakes so hard it will produce a leak

Posted on May 25, 2009

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Maybe booster is OK but there is air in the power steering / booster
hydraulic lines. Check hoses to power steering pump and booster.
Replace if needed. Bleed system.

Posted on Aug 10, 2012

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4 Answers

Why is it hard to push on the brakes


The most obvious cause for a hard pedal is simply not enough vacuum. Check the brake power booster by pumping on the brake pedal while the car isn't running. Continue pumping until you've "bled off" the vacuum from the booster. Hold the pedal down while you start the car. The pedal should go down a bit more beneath your foot. If it doesn't, then you should examine the connection between the vacuum hose of the brake power and the engine's vacuum.
Replace the brake power booster if the connection's fine, which would fix the hard brake pedal problem.

It may be your calipers need replaced. Check them for signs of wear. Look at the metal spring where the brake pads sit.
Apply tension to the pad and see whether you hear a pop. If you do, the brake pad is moving too much on the bracket. Replace the caliper. This could help the hard brake pedal.

Jul 09, 2014 | 2000 Isuzu Rodeo

2 Answers

Hard brake pedal


My first guess would be the power brake booster is leaking vac.

Jan 25, 2014 | Subaru Impreza Cars & Trucks

1 Answer

Brake pedal hard but sitll braking


the brake booster will make the brake pedal hard to push. they get that way usualy when they loose there vacume. if you dont hear a vacume leak with engine running then i would start with replacing the booster

Jul 25, 2012 | 2000 Oldsmobile Alero

1 Answer

Hear air when i push down the brake pedal


If the pedal gets hard then you either have a vacuum leak from the hose coming off of the brake booster going to the intake manifold or the brake booster itself is faulty.

Jan 10, 2012 | 1994 Jeep Cherokee Country

1 Answer

Braking problem


If you hear an air sound when u push on the brake pedal then its usually the master cylinder. If u can't hear air then you either have a leak in one of your brake lines or there is still air in your brake lines. If that's the case then they need to be bleed out.

Nov 29, 2011 | Cars & Trucks

3 Answers

99 ford explorer brake pedal goes to floor. Booster or master cyl. ?


Not likely that the booster is an issue. The booster would not be able to overcome the brake fluid compression.
First open and inspect all brakes for leaks, adjustment, etc. Check all brake lines.
So if no leaks, did the fluid go low in the MC? If so, pad consumption would eat more than a MC reservoir of fluid, and not require MC replacement, but rebleeding and top up of fluid. If the pads are worn, and you replace them, often this will expel air back through the MC.

If you determine the MC is faulty, bench bleed the new one before install, or you will have lots of problems getting air out....

Mar 03, 2011 | 1999 Ford Explorer

2 Answers

Breaks will not work at random times?


YOU HAVE A BAD MASTER CYLINDER
HAVE IT REPLACED AHD YOU PROBLEM WILL GO AWAY

Mar 02, 2010 | 1995 Toyota Camry

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I have a 1998 chevy s10 it has a good brake pedal with the engine off but with it running the pedal go'es to the floor and you can hear air at brake booster


Check for fluid leaks and your brakes. If you see no leaks and your brakes are in good shape replace the brake master cylinder and bleed the system. The air you hear is because the pedal went to the floor. If the booster goes bad the pedal will get so hard you can hardly push it at all. I think you will find if this happened suddenly either you have a major leak or the master cylinder went bad.

Sep 29, 2009 | 1998 Chevrolet S-10 Pickup

1 Answer

Pistons in both front calipers stay out, both calipers replaced


You may have a leak in the booster or master cylinder. You can put a pressure tester on the system to test for leaks. It does sound like you have an air leak.
You can try to bleed the master cylinder, then slave cylinder, then brake lines.

Aug 24, 2009 | 1993 Oldsmobile Achieva

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