high idle speed

2004 TOYOTA TACOMA
30,000 MILES • 2.4L • 4 CYL • RWD • AUTOMATIC
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WILIAM
  • MEMBER
  • 1 POST
idle speed too high and did not gos dwon after engine warm up
Jan 22, 2016 at 1:46 PM
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CARADIODOC
  • ✓ASE Certified Mechanic
  • 34,321 POSTS
  • ASE Certified Mechanic
Most common cause is a vacuum leak. Check for loose or cracked vacuum hoses first. You can narrow down the cause by pinching various hoses to see if one affects idle speed, then follow that hose to its branches and do that again on each branch.
Jan 22, 2016 at 1:49 PM
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