Whining noise when pressing the brakes hard

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danny04GT

New Member

Jun 10, 2004

50

0

0

Phoenix

Jun 23, 2006

#1

• Jun 23, 2006

• #1

Today I noticed that if i press on the brake hard, the car makes a strange whining noise. At first I thought the noise was my brakes squeaking, but I pressed the brakes in while I was idleing in neutral and the car makes the same sound. Also If I step on the brake hard, RPM's drop to about 6-700 until I let off the brake, I don't think thats normal either. Any ideas on what the noise might be? Fluid is fine by the way.

 

Superhereaux

chicks make me feel inadequate

Founding Member

Jul 30, 2002

538

3

59

South Texas

Jun 23, 2006

#2

• Jun 23, 2006

• #2

the noise sounds like it would be the power steering pump

the 'hydro-boost' system uses the p/s pump to provide vacuum assist to the brake system. when you hit the brakes you lose all the vacuum so the p/s pump has to provide more

if you can hear it sitting in traffic with the a/c and radio on you probably have a problem. take it to ford if it's under warranty

 

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Stang2003GT

Member

Jul 7, 2003

254

0

16

Jun 24, 2006

#3

• Jun 24, 2006

• #3

Mine does it too, from day one.

 

PlatinumDevil

Member

Jul 1, 2003

0

0

16

Regina, Saskatchewan, Canada

Jun 24, 2006

#4

• Jun 24, 2006

• #4

As does mine, i just dont press my brakes that hard, it feels kind of like your letting brake fluid out when you do it.

 

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danny04GT

New Member

Jun 10, 2004

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Phoenix

Jun 24, 2006

#5

• Jun 24, 2006

• #5

Stang2003GT said:

Mine does it too, from day one.

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Really? I wasn't sure about the RPM's dropping, but the noise was never as noticable today. Regular breaking is fine, but if I step on the brake pedal real hard, I can definitely hear the noise over the radio and exhaust noise.

 

PlatinumDevil

Member

Jul 1, 2003

0

0

16

Regina, Saskatchewan, Canada

Jun 24, 2006

#6

• Jun 24, 2006

• #6

Did ya check your fluids? Maybe top them up... other than that *shrugs* unless a vacuum line came off somewhere, but ya mines fairly loud, but i dont think its much (if at all) louder than the power steering pump when you turn the wheel at a stop.

 

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danny04GT

New Member

Jun 10, 2004

50

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0

Phoenix

Jun 24, 2006

#7

• Jun 24, 2006

• #7

The fluids are fine. But I guess thats what the noise sounds like, an old steering pump. You ever ride in an old bucket and the steering pump makes a really loud whining sound when you make a tight turn. Now here is the trickey part, I'm at like 34,900 miles. My wife is planning on driving the car to San Diego on Monday. By the time she gets back, my warranty will be expired. What do you guys think, normal "Mustang" noise that just got a little louder, or is it something I need to take the car into the dealership for?

 

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Yellow2002GT

New Member

Feb 20, 2006

148

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Raeford, NC/ FT Bragg

Jun 24, 2006

#8

• Jun 24, 2006

• #8

I would take it in immediately!!!! Also do you take corners pretty hard? I have had 3 stangs soo far and the first ones power steering pump went out because I always took the corners hard! I just drive my normal now on corners and never had any problems!

"ED"

 

K

Kilgore Trout

Fried or Broiled ?

10 Year Member

Mar 30, 2005

4,749

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134

Jun 24, 2006

#9

• Jun 24, 2006

• #9

Mine has always made that noise.

 

Pearl02

Member

Nov 27, 2004

496

0

16

Kansas City

Jun 24, 2006

#10

• Jun 24, 2006

• #10

McTeague said:

Mine has always made that noise.

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Mine to. I don't think it's the power steering. I believe the noise is could be coming from the ABS system/pump. Just a guess. Pearl02.