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High idle when I first start car and car jerks when applying brake slowly

Tiny
ROSE VANDERLEE
  • MEMBER
  • 1996 PONTIAC GRAND AM
  • 1.3L
  • V6
  • 2WD
  • AUTOMATIC
  • 115,000 MILES
I start my car in the morning to warm it up and I notice it idles fast, then it seems like it idles faster the longer it sit, then when I go to brake slowly it jerks. Is there an easy fix?
Sunday, January 14th, 2018 AT 12:13 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 43,404 POSTS
Hello, Rose can you please make these separate questions because they are two different problems.

The high idle sounds like and can be a vacuum leak but to be sure lets try this guide.

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

This guide can help as well.

https://www.2carpros.com/articles/engine-idles-too-high

Please let us know what you find. We are interested to see what it is.

Cheers, Ken
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Monday, January 15th, 2018 AT 3:24 PM

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