I noticed a hissing noise coming from under the dash

Asked by Aug 28, 2014 at 07:23 PM about the 1999 Toyota Camry Solara 2 Dr SLE V6 Coupe

Question type: Maintenance & Repair

I noticed a hissing noise coming from under the dash while driving.  I turned off air and
radio and noticed it was only when I pressed the brake pedal (didn't matter if I was
stopped or moving).  When the car is stopped and its *Really* quiet I can hear it when I
am not pressing my brakes.  I know this sounds like a booster issue but here is the catch:  
My brakes are perfectly normal and have been for a week since this has happened.  The
mechanic I spoke with does not believe its the booster, and I hope it isn't because I don't
have that money.  The car is a 1999 Toyota Solara V6 SLE

10 Answers

48,265

Hmmmm. How dose the rubber hose from the block to the brake booster look?

1 people found this helpful.

BoholMark, It's as old as the car is. I tried running my hands up and down the hose to detect leaks but I couldn't find anything (granted there is a much more methodical way to do this). I suspect it could also be a the check valve. When I am in my car its easy to hear, left side under dash. But when I get under the hood, it is hard to pin-point the location of the noise with all the other moving parts creating noise.

48,265

If you leave it overnight is the brake peddle hard in the morning?

Mark, Yeah. Brake pedal gets pretty much hard when the car cuts off. Once car turns on, it operates normally and drops a couple inches.

48,265

Did the mechanic physically look at the booster or just give an opinion?

He gave an opinion. He said he'd worked on Toyota for 20 years and has only ever had to replace a few boosters and said he very highly doubted it given my symptoms.

48,265

All the symptoms are there. Hissing noise. The brake peddle gets hard. There's a vacuum leak somewhere.

2 people found this helpful.
Best Answer Mark helpful

I completely agree but I've read through so many posts that talk about bad boosters and I just struggle to think that's my issue... I have no trouble braking, no trouble idling, etc. It sounds like someone is going to have to take a look to diagnose... Thanks for your help!

I have the exact same problem on the same model/year car. Although the brakes seem to work normally, on a panic stop you can tell they are not providing enough braking power. At 40MPH and standing on the brake with both feet, ABS never engages and stopping distance too long. I took this to Toyota, and they did a full diagnostic on the brake system, including vacuum check of the brake booster. They found no problems. Funny thing is, the problem disappeared for a few weeks. No noise, and panic braking performance was restored, with ABS functioning as expected. But now it has returned. I am at a loss.

With the car running you can pinch off the brake booster hose and stop the vacuum to the booster. If the nose stops it is a booster it may be in the early stages of failure with a small pin hole in the diaphram.

Your Answer:

Camry Solara

Looking for a Used Camry Solara in your area?

CarGurus has 27 nationwide Camry Solara listings starting at $1,495.

Postal Code:

Toyota Camry Solara Experts

  • #1
    Mike Bonnell
    Reputation
    560
  • #2
    FXX_7851
    Reputation
    440
  • #3
    F_O_R
    Reputation
    410
View All

Find great deals from top-rated dealersTM

Search

Related Models For Sale

Used Toyota Camry
46 Great Deals out of 1,436 listings starting at $2,500
Used Toyota Corolla
107 Great Deals out of 6,846 listings starting at $2,575
Used Toyota Avalon
7 Great Deals out of 146 listings starting at $4,955
Used Ford Mustang
43 Great Deals out of 1,782 listings starting at $4,995
Used Honda Accord
53 Great Deals out of 1,903 listings starting at $2,800
Used BMW 3 Series
122 Great Deals out of 2,452 listings starting at $2,985
Used Toyota RAV4
82 Great Deals out of 4,599 listings starting at $3,888
Used Chrysler Sebring
3 Great Deals out of 141 listings starting at $2,995
Used Honda Civic
149 Great Deals out of 6,139 listings starting at $1,700
Used Honda Accord Coupe
17 Great Deals out of 230 listings starting at $3,900
Used Toyota Sienna
36 Great Deals out of 1,027 listings starting at $2,600
Used Toyota 4Runner
22 Great Deals out of 715 listings starting at $5,999
Used Nissan Altima
54 Great Deals out of 1,531 listings starting at $1,995

Used Cars for Sale

2007 Toyota Camry Solara For Sale
6 listings starting at $8,984
2006 Toyota Camry Solara For Sale
6 listings starting at $7,495
2005 Toyota Camry Solara For Sale
3 listings starting at $4,500
2004 Toyota Camry Solara For Sale
7 listings starting at $3,450

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.