Question about 1987 Ford Ranger

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Engine accelerates when brake is applied

Engine accelerates when applying brake. What can this be?

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  • Master
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Check for air leaks in the vacuum lines first.Try cleaning your Exhaust Gas Recycling valve (EGR valve). This can cause uncontrolled idle speed. If that does not stop the acceleration, try replacing the IACV valve (idle air control valve) if these stick it will raise your idle also.

Posted on Feb 11, 2012

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Its a vacuum issue.The vacuum hose or line is cracked and there is a vacuum leak.Click the link below and see the troubleshooting for this problem:----http://technoanswers.blogspot.in/2012/02/engine-accelerates-when-brake-is.html
---------This will help.Thanks.

Posted on Feb 10, 2012

  • Jason Feb 11, 2012

    Very insightful, and almost too easy. Wish this would have solved the problem but this vehicle is not equipped with a power booster. Any other thoughts on what this could be? Keep in mind it only happens when the brake is applied.

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