Brakes & RPM's

Discussion in 'SVT Forum' started by Beau, Sep 28, 2004.

  1. Beau Founding Member

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    When stopped, if I press down on the brake pedal pretty hard, the RPM's drop up to 200. I also hear a slight whine, and I hear a groan/squeal. The pads are fine, about 70% and the brakes haven't been touched since I bought the car in May. What could it be?
  2. COBRA90GT Moderator

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    The slight drop in RPMs is normal, it's just the electrical system (alternator, etc) adjusting to the voltage.

    The same thing happens when the A/C condenser kicks on, there will be that little "surge" before the RPMs come back up if you turn on the A/C while completely stopped.

    Where is the groan/squeal sound exactly coming from? Have you localized it to the both sides of the front brakes?
    :shrug:

    Have someone push down on the brake pedal while you listen closer for noises - that may help out.
  3. Beau Founding Member

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    i hear it mainly on the left front brake. and the reason i asked about the dip in RPM is because i had never noticed it before, either with my cobra or with my GT i used to have.
  4. 86/92stang Founding Member

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    Its the hydroboost. Youre Brakes are run off pressure from the power steering pump. Its normal. Hows it doing by the way?
  5. Beau Founding Member

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    thanks for the reassurance :) its goin good..car drives awesome..for the 3 minutes it took to get home :D what all did you guys do? PM me if you need to.
  6. 86/92stang Founding Member

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    LOL well the 3 minutes are assuring
  7. Beau Founding Member

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    LOL yea I'll have it out more tomorrow on the freeway going to and from school, so I'll open it up (safely and at a reasonable speed) and see what happens :D

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