Which is the idle air control solenoid valve?
See below. What Is The IACV? The IACV is the “Idle Air Control Valve,” or more fully, the “Idle Air Control Solenoid Valve.” The IACV directly affects idle conditions, RPM in particular. On cold starts, the IACV sends rpm’s higher than on a warm start. Irregular idle conditions may be the result of a dirty IACV sensor.
What to do when fast idle valve fails to close?
Whenever a Honda fast-idle valve fails to close, be sure the cooling system is clean, full and air-free. When the engine is at operating temperature, both hoses on the bottom of the fast-idle valve should feel the same–hot. When in doubt, safely drain the system and visually inspect these hoses for clogging or collapsing.
What to use to clean idle air control valve?
After cleaning, I let the IACV air dry before reattaching. Other board members have substituted alcohol with WD-40, carb cleaner and throttle body cleaner with success. WRX03 cleaned his IACV by inverting it and filling the cavity with gasoline, and letting the gasoline sit in the cavity for a time.
How does the Honda fast idle thermo valve work?
Dan explains how Honda’s fast-idle valve works, the symptoms you’ll encounter when it doesn’t and how you can home in on diagnosing a leaker. A customer’s Honda runs perfectly fine when the engine is cold, but then develops a weird surge condition after it’s warmed up. For no obvious reason, the idle speed fluctuates steadily up and down.
See below. What Is The IACV? The IACV is the “Idle Air Control Valve,” or more fully, the “Idle Air Control Solenoid Valve.” The IACV directly affects idle conditions, RPM in particular. On cold starts, the IACV sends rpm’s higher than on a warm start. Irregular idle conditions may be the result of a dirty IACV sensor.
After cleaning, I let the IACV air dry before reattaching. Other board members have substituted alcohol with WD-40, carb cleaner and throttle body cleaner with success. WRX03 cleaned his IACV by inverting it and filling the cavity with gasoline, and letting the gasoline sit in the cavity for a time.
What causes idle rates to drop when stopped?
The IACV is exposed to the intake charge, and grime can build up from both (these are my assumptions) a. oil blow-by and b. any impurities that manage to escape the air filter. A dirty IACV appears to cause both too high idle rates and too low idle rates. In my case, RPMs dropped immediately to zero (car stalled) when stopped.
When did my idle air control valve disappear?
My idle problem took some time to manifest, and first appeared and disappeared after one day in January 2005 (bought the car in March 2002). By April 2005 it had returned, and was dramatically worse.