What makes it idle up and down
car idle high and low
Jan 5, 2013 at 5:56 PM
Advertisement
ASEMASTER6371
✓ASE Certified Mechanic
52,796 POSTS
idle air control valve is the most common failure for this. also, look for vacuum leaks
Roy
Jan 6, 2013 at 3:09 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.