Question about 1999 Chrysler Town & Country

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Brake pedal pressure "whistling" whether totally stopped or braki

Depending on how hard youre pushing on the pedal there is a whistle noise that happens and the noise is coming from the engine bay around the firewall. The car has to be running. Still have good brakes and pressure, I think. the whistling sound would be described as an air leak. Is the booster bad?

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  • Collins Sep 06, 2013

    I will try this; thanks

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There is a seal where the rod from the booster connects to the foot pedal that is probably leaking

Posted on Jul 26, 2009

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1 Answer

Making whistle noise on off on run and stopping.


There are basically two types of whistle noises.

* Whistle when you get more gas (increase RPM, put gas pedal, sometimes just idling but louder when you put more gas)
This usually intake-side leak.
Intake manifold itself, intake manifold gasket (most likely), even airfilter housing, Airflow meter housing (connector), anything where air goes to engine.
usually engine get rough or unstable idle when intake leak occur.
Engine knocking or pinging may feel.

* Whistle when you decrease RPM (engine brake, reduce speed, sometimes just idling but louder when it dropping RPM)
This usually Vacuum-side leak.
There are many vacuum hoses in engine room. even inside of cabin (heater control, etc)
Try to spot where it coming from.
Vacuum also connected to Brake servo, heater control and spark timing.

Put metal or plastic pipe (small PVC pipe will work fine) to one of your ear then isolate source of noise and find where it come from.

Feb 26, 2016 | Cars & Trucks

1 Answer

I have a whistling noise coming from my car, this is only when moving. If I apply the brakes or am at a standstill, even if I rev the engine there is no noise. When I had service I was told my front...


Whistling noise is pretty vague. There are several possibilities. The brakes could be the source of the noise. If they're 85% gone they should be replaced anyhow regardless of whether they are the source of the noise. Otherwise the noise will no longer be your biggest problem. Disc brakes do have what is called a worn pad indicator. This is simply a metal tab that scrapes the brake rotor, making an annoying, scraping noise until the brake pads are replaced.
Other than this, there are several possibilities. Where is the noise originating? Could it be wind noise coming from an ill fitted window seal? Vacuum hoses are another noise source, although they usually only whistle when decelerating or at idle.
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Nov 01, 2014 | Cars & Trucks

2 Answers

How do you know that a brake booster is bad?


Booster problems are rare but they do go bad sometimes.
A bad booster generally causes the brake pedal to feel hard to push down, and a lot of pressure on the brake pedal is required to make the car stop.
Rarely, a vacuum brake booster will develop a vacuum leak, which can cause engine performance problems, hissing or whistling noise, as well as requiring increased pressure on the brake pedal to stop.

The first test:
With the vehicle parked, turned OFF, and the parking brake set, pump the brake pedal 5 to 6 times. If the pedal gets harder to push after several times, your booster is probably good.

The second test (To make sure):
After the test above, without making any changes, press and hold the brake pedal with light to moderate pressure.
Now with your foot still on the brake pedal, start the vehicle.
If the booster is good, you will feel the pedal go down when the engine starts.

Hope this helps!

Jun 21, 2014 | 1993 Cadillac DeVille

1 Answer

Whistling noise under slight acceleration


check for a manifold gasket / pipe leak

Apr 04, 2014 | Ford F-150 Cars & Trucks

2 Answers

4runner


What kind of problem?

Jun 11, 2013 | Cars & Trucks

1 Answer

1995 jeep wrangler whistling noise when accelerator pedal not down


Sounds like a vac leak, could be the power brake booster or a hose.

Jul 29, 2012 | 1995 Jeep Wrangler

1 Answer

Whistling sound while applying brakes.


this could be an air leak in a hose,,,have a friend hold the brakes on and stick your head under the hood,,with the engine running press the brake on,,you may here the whistling and fine were its coming from i its a leaky hose fix it fast before you loos your brakes

Jul 31, 2010 | 2006 Chevrolet Malibu

3 Answers

2004 honda odyssey making whistle noise


Could be the squeler on the brakes. Does that to let you know it's time for brake job. Have your brakes checked

Mar 28, 2010 | 2004 Honda Odyssey

1 Answer

Makes a whistling sound when I drive that stops when I brake


whistling could be your brake sensors telling you to change brake pads..if its coming from brakes noise does stop when depressing brakes

Feb 07, 2010 | 2004 Jeep Grand Cherokee

2 Answers

2001 Monte Carlo - brakes squeal "whistle"


Actually - I had the same problem and replaced my brakes 4 times in a year. YES 4 TIMES because of the whistling. I switched from metallic to ceramic pads and works like a charm! Ceramic will not allow the noise, plus I have found to have much better control over braking and short distances.

Jan 14, 2009 | 2001 Chevrolet Monte Carlo

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