Car going up to 1,500 revs on idle

2009 PEUGEOT 308
110,000 MILES • 2.0L • TURBO • 2WD • MANUAL
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MIKE5584
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  • 1 POST
My vehicle listed above diesel keep going up to 1,500 revs on idle but when I apply the foot brake it decreases to normal idle, when I remove my foot it goes back up to 1,500 revs. any help would be appreciated. Thanks
Mar 4, 2020 at 8:22 AM
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STRAILER
  • ✓ASE Certified Mechanic
  • 54,837 POSTS
  • ASE Certified Mechanic
Hello,

This sounds like you have a vacuum leak or a dirty through bore. these guides should help us fix the problem:

https://www.2carpros.com/articles/throttle-actuator-service

and

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

Please run down these guides and report back.

Mar 7, 2020 at 12:56 PM
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STRAILER
  • ✓ASE Certified Mechanic
  • 54,837 POSTS
  • ASE Certified Mechanic
Also we should try to get the codes.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Please run down this guide and report back.
Mar 9, 2020 at 1:29 PM
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