07-26-2011, 09:31 PM
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Registered User
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Join Date: Jun 2006
Location: Chandler, Arizona
Posts: 3,525
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Try this:
Quote:
Idle Control Valve
1. Check switch-off point of additional air valve. With coolant temperature below 70°F (20°C), engine should idle at 900-1200 RPM. Idle RPM should drop to normal when operating temperature reaches 160°F (70°C).
2. If cold start idle is too low, compress connecting hose between idle speed air distributor and additional air valve. If no RPM change occurs, additional air valve is seized and must be replaced.
3. If idle RPM is too high at operating temperature, pinch connecting hose between idle speed air distributor and auxiliary air valve. If idle speed changes, auxiliary air valve is sticking or is not electrically heated.
4. Check voltage and resistance of auxiliary air valve. Nominal voltage should be 12 volts and nominal resistance should be 40 ohms.
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