Question about Cars & Trucks

1 Answer

1996 Buick Park Avenue Ultra making a hissing noise when I press Brake Pedal. Have to Press super hard to stop or slow down.

My Buick is making a hissing noise under dash when I push the brake pedal. I have to push SUPER hard to get it to stop. It's sucking at the brake pedal plunger under the dash, going into the firewall (when I push the pedal/when it makes the hissing noise). I run the vehicle for a minute and turn it off and crack open the 90 degree fitting coming out of the brake booster and it sucks in there too. ???

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Greenhorn:

    A rookie expert who has answered 20 questions on their first day.

    Cheetah:

    An expert who has answered 20 or more questions within one hour.

  • Expert
  • 37 Answers

Sounds like a possible air pocket in the braking system. Do you know how the bleed the brakes? They may need to be bled. Also, if you've added brake fluid recently, and didn't put the cap back on, it could create a suction. Another note is to check the cap to the brake fluid reservoir. It's rare, but, it could be bad.

Posted on Jul 10, 2013

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

  • 231 Answers

SOURCE: Bad Brakes

I would be looking at the ABS valve. one way to test the booster is to start the vehicle while you ae depressing the brake pedal, you should feel the brake pedal drop a little bit, this is a sign that the boostr is working properely. you may want to check to see if there is any air in your system as well.
hope that this helps.

Posted on Oct 16, 2008

  • 123 Answers

SOURCE: Slight air hiss or sucking sound near brake pedal and no

It maybe, I don`t know the vehicle personally but on Trucks and Buses, when this occurs, it usually points to the master cylinder piston seals which moves in and out as the foot pedal is operated. Does the hiss alter as the pedal is pushed down?? Does the hiss reduce or increase as the pedal is pushed down?? If it does, I think you`ll find that it`s this air seal between the piston and cylinder that`s failing and not the servo. Whether you car works the same way, I don`t know but I presume it must. Ian

Posted on Aug 06, 2009

Gort007
  • 1187 Answers

SOURCE: I have excessive brake travel, and a hard time 98 chevy blazer

Two issues...
The brake booster has a ruptured diaphragm. Replace the booster.
It is located under the hood between the brake master cylinder and the firewall.

Your master cylinder may be leaking fluid internally past the plunger.
Have it examined when you change the booster.

Posted on Oct 12, 2009

SOURCE: my brakes are making a hissing noise when i let

you mean you hear air in the cab down by the pedal. If thats the case your power steering assist is leaking. Its the big black unit behind the brake master cylinder. It may set a check engine light at times for lean condition.

Posted on Nov 19, 2009

  • 326 Answers

SOURCE: My 2003 ford expedition just started a hissing

most likely have a bad diaphram in the brake booster that hisssing sound is vacuum leaking under hood there will be hose going to brake booster unhook hose and pinch off hose start car does hissing sound disappear if so bad booster

Posted on Sep 03, 2010

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

My brake pedal will not budge, and a hissing noise present when running


The stop lights won't go out until the pedal is depressed, as there is a switch which is activated by the pedal.

A hard brake pedal is probably caused by a defective servo. The hissing noise is probably an air leak in the servo.

Switch the engine on, open the bonnet (the hood..) and see if you can locate the hissing - that'll probably be in the brake servo area.

If you don't know what a brake servo looks like here is a generic image:



26071617-5gult0ot5kkhyupfos0rfps2-1-0.jpeg

Jan 27, 2016 | 1989 GMC Sierra

1 Answer

Engine rattle while stopped in drive with foot on brake


Chack for vacum pipe that leeks... it sound like the rpm buster is diconnected .
injoy

Dec 16, 2013 | 1998 Buick Park Avenue

1 Answer

Engine Noise


chack for vacum pipe that leeks... it sound like the rpm buster is diconnected .
injoy

Dec 16, 2013 | Cars & Trucks

1 Answer

I have a 2000 Buick Park Avenue Ultra. Making a purring sound on the front driverside that gets louder when I accelerate & contines till I brake


Check your drivers side front CV joints and make sure the dust covers aren't ripped or broken. You;ll also want to check to make sure part of your splash guard isn't rubbing against your tire.

Nov 11, 2011 | 2000 Buick Park Avenue

1 Answer

Brake pedal has alot of back pressure and car moves in gear.Have to press real hard to stop.How to check abs pump if has one where or brake booster or master cylinder?Don't know how to trouble shoot or...


The air seeping is a dead giveaway. Your power brakes are now manual brakes, but stiffer. The diaphram in the brake booster has torn and the hissing noise is the engine vacuum escaping (you hear it louder when you depress the pedal right?). Replace the booster and you will be fine. The brake lights probably don't work because you can't push the pedal down far enought to release the switch. Please rate. Thanks.

Sep 03, 2011 | 1995 Mercury Cougar

1 Answer

I need the serpentine belt route on the supercharged model


Click on the following free, direct Link. It has several Belt Diagrams including the Belt Diagrams for your 1996 Buick Park Avenue Ultra with the 3.8L V6 Super Charger.

Scroll Down the Link Page about 2/3rd down for your Diagram (G00005648).

Let me know if this helped, or if you have additional information or questions. Feel Free to contact me at FixYa.com!

http://www.2carpros.com/car_repair_information/year/1996/make/buick/model/park_avenue/1996_buick_park_avenue_drive_belt_routing_diagram.htm

Apr 17, 2010 | 1996 Buick Park Avenue

1 Answer

Super charger noisy


If the s/c is making a knocking noise that goes away when the throttle is pushed, you could have a coupling problem. Remove the s/c belt, grab the pulley and quickly twist the pulley back and forth from the 10 to 2 positions. There should not be a clunking noise and slowly moving the pulley you should feel a drag while the rotors move, no drag immediately means the coupling is bad.


Nov 03, 2009 | 1998 Buick Park Avenue

1 Answer

1993 buick park avenue ultra car shuts off


Check the fuel pump and also the catalytic converter, if the car is running or idling o,k. then it is not the fuel pump but it could very well be a stopped up catalytic converter (a tell tale sign of this is balking or hesitation when this vehicle is on the highway in overdrive).

Apr 05, 2009 | 1993 Buick Park Avenue

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

204 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cars & Trucks Experts

yadayada
yadayada

Level 3 Expert

75797 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22114 Answers

Randy Ohler

Level 3 Expert

14585 Answers

Are you a Car and Truck Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...