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1993 Lumina

Tiny
GRIMMY523
  • MEMBER
  • 1993 ALL OTHER MAKES ALL OTHER MODELS
While the brakeis depressed at idle speeds the car wants to stop and sometimes does also sometimes when you accelerate after a stop it boggs down. I have replaced the plugs and wires. The rpm gauge also fluctuates when at idle with the brake depressed.
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Sunday, April 16th, 2006 AT 6:37 PM

3 Replies

Tiny
LOSONE
  • MECHANIC
  • 1,616 POSTS
Simple, you have a bad brake booster that is leaking vacuum when you depress the pedal causing all sorts of wierd problems. Good Luck
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Sunday, April 16th, 2006 AT 6:41 PM
Tiny
GRIMMY523
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How can it be a bad brake booster when the rpm fluctuates even when I n park.
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Monday, April 17th, 2006 AT 5:09 PM
Tiny
LOSONE
  • MECHANIC
  • 1,616 POSTS
A vacuum leak is a vacuum leak regardless. It is greater when you depress the brakes. In the past 40 odd years of garage ownership I have replaced hundreds of brake boosters. Good luck
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Monday, April 17th, 2006 AT 5:36 PM

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