Car revs when brake depressed.

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Jul 11, 2001 | 11:53 AM

raene

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Joined: Oct 2000

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From: Surrey, BC, Canada

Car revs when brake depressed.

Is this normal? Happens both when it's warm and cold... sometimes it revs up 500 RPM when the brakes are touched, and then it revs again when the brakes are let off.

Jul 11, 2001 | 12:03 PM

bps2799

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Joined: May 2001

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From: USA

Re: Car revs when brake depressed. (raeneshadow)

I think it has something to do with the vacuum assist for the brakes.

Jul 11, 2001 | 01:47 PM

Honda-Tech Member

Joined: Feb 2001

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From: Motor City, MI, usa

Re: Car revs when brake depressed. (raeneshadow)

How wide are your shoes? hehe

Jul 11, 2001 | 02:09 PM

sgT

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From: WI

Re: Car revs when brake depressed. (raeneshadow)

If you pump the brakes at idle, you force air from the brake booster into
the intake manifold. This makes the idle ride for a moment.

Jul 11, 2001 | 02:32 PM

raene

Thread Starter

Joined: Oct 2000

Posts: 4,440

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From: Surrey, BC, Canada

Re: Car revs when brake depressed. (sgT)

That's what I figured, but I thought the MAP might be on the way out (mistaking it for an inlet of air, as caused by the throttle opening). Thanks guys