Edmunds Answers

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  • avatar MrShift@Edmunds 08/01/09 1:06 pm PST

    If you mean that the brake pedal goes very hard and is extremely difficult to push, then yes, you probably have a large vacuum leak in the power brake booster system. A vacuum leak will also affect engine idle, especially as you push or release the brake. a vacuum leak causes extra air to enter the engine and it screws up the fuel/air mixture.

    By all means, have the power brake system checked for a leaking hose or internal leak in the booster unit itself, which is vacuum operated to assist you in braking.





Answers

  • MrShift@Edmunds 08/01/09 1:06 pm PST

    If you mean that the brake pedal goes very hard and is extremely difficult to push, then yes, you probably have a large vacuum leak in the power brake booster system. A vacuum leak will also affect engine idle, especially as you push or release the brake. a vacuum leak causes extra air to enter the engine and it screws up the fuel/air mixture.

    By all means, have the power brake system checked for a leaking hose or internal leak in the booster unit itself, which is vacuum operated to assist you in braking.





  • dragonfly6 04/27/14 11:14 am PST

    I had the same thing happen. The vaccumn hose from the power brake booster to intake manifold was disconnected at the manifold. Put it back on all troubles went away.

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