1997 Honda Prelude IDLE

1997 HONDA PRELUDE
10,000 MILES • 4 CYL • 2WD • MANUAL
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978JDM
  • MEMBER
  • 1 POST
When i start my car it has a unstable idle about 20 25min the idle jus jumps up n down....???? How can i fix this problem
Apr 7, 2010 at 7:43 AM
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KHLOW2008
  • ✓ASE Certified Mechanic
  • 41,814 POSTS
  • ASE Certified Mechanic
Hi 978jdm,

Check for
1. Vacumn leakages,
2. Clogged IAC coolant hoses.
3. Loose idle adjust screw.
4. Faulty Fast Idle Thermo valve.
Apr 8, 2010 at 3:04 PM
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