Hissing sound

40

Asked by Jan 10, 2016 at 02:43 PM about the Jeep Cherokee

Question type: Maintenance & Repair

My 2000 Jeep Laredo is making a hissing sound
coming from the brake pedal. When brake pedal is
pushed hissing stops and engine idles at less than
normal. Patient continues with car started with no
pressing on the brake and even with the e brake off
engine in park. Anybody know what the problem is
and how I would fix it?

8 Answers

46,065

Sounds like the vacuum brake booster may be leaking and bad.

3 out of 3 people think this is helpful.
6,455

Sounds like the brake booster seal where the brake pedal rod goes into it is leaking vacuum into the cab of the truck. Likely that the booster needs replaced.

2 out of 2 people think this is helpful.
6,455

Great minds Bob, typing again at the same time.

2 out of 2 people think this is helpful.
46,065

Guy, beat you by 12 seconds. LOL

2 out of 2 people think this is helpful.
40

Thanks y'all

2 out of 2 people think this is helpful.
40

is it safe to drive tell Monday

1 out of 1 people think this is helpful.
6,455

Unless its loosing enough vacuum to make the pedal hard to press it's just annoying for now.

2 out of 2 people think this is helpful.
40

Awesome thanks man I appreciate it

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

  • Hissing sound 1 answer

    2000 Jeep Grand Cherokee Laredo is making a hissing sound coming from where the break is the hissing stops when the brake is fully pushed. Anybody know what I need to do?

    2000 Jeep Cherokee

    -

    Maintenance & Repair

  • After I turn motor off sound like egg frying 2 answers

    So after when k turn the engine off it sound like an egg is frying under the hood?

    2001 Jeep Cherokee 4 Dr Sport 4WD

    -

    Maintenance & Repair

  • Clicking sound

    After I start my jeep (auto start) and reg start I hear a slight clicking noise. Then it gets louder after it is driven a bit. What is this? I don't see any belts or anthing on that side.

    2015 Jeep Cherokee Latitude 4WD

    -

    Maintenance & Repair

  • Popping/grinding sound coming from rear end 1 answer

    Only noticeable from start and low speeds; turning or straight, there's usually not much difference. Had 3 brakes jobs and the last one didn't even keep it hidden before I left the garage's parking l...

    Jeep Cherokee

    -

    Maintenance & Repair

  • original sound equipment 1 answer

    I have a 1994 jeep Cherokee sport and was wondering if they had amps in them originally or power booster ?

    1994 Jeep Cherokee 4 Dr Sport 4WD

    -

    General

Cherokee

Looking for a Used Cherokee in your area?

CarGurus has 52,962 nationwide Cherokee listings starting at $1,800.

ZIP:

Search Jeep Cherokee Questions

Jeep Cherokee Experts

#1 swtcat13
swtcat13
Reputation 1,370
#1 Daniel Guillen-Pizzorni
Daniel Guillen-Pizzorni
Reputation 1,370
#3 Luis660399
Luis660399
Reputation 1,180
View All

Related Models For Sale

Used Jeep Grand Cherokee
1,030 Great Deals out of 74,159 listings starting at $800
Used Jeep Wrangler
277 Great Deals out of 18,090 listings starting at $2,950
Used Jeep Compass
250 Great Deals out of 23,884 listings starting at $1,999
Used Jeep Wrangler Unlimited
268 Great Deals out of 43,286 listings starting at $10,200
Used Jeep Patriot
307 Great Deals out of 25,609 listings starting at $2,500
Used Toyota 4Runner
236 Great Deals out of 20,492 listings starting at $1,800
Used Jeep Renegade
136 Great Deals out of 25,542 listings starting at $12,000
Used Jeep Liberty
240 Great Deals out of 7,250 listings starting at $995
Used Ford Escape
1,377 Great Deals out of 93,869 listings starting at $900
Used Ford Explorer
937 Great Deals out of 72,464 listings starting at $1,499
Used Ford F-150
2,240 Great Deals out of 205,781 listings starting at $1,499
Used Honda CR-V
899 Great Deals out of 61,768 listings starting at $988
Used Jeep Commander
65 Great Deals out of 1,703 listings starting at $968
Used Toyota RAV4
723 Great Deals out of 71,519 listings starting at $1,895
Used Toyota Tacoma
526 Great Deals out of 40,526 listings starting at $2,495

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.