Cold Engine: Carbureted
- Ensure coolant temperature is less than 131°F (55°C) on Legend models or less than 145°F (63°C) on rest of models. Disconnect vacuum hose from EGR valve and connect vacuum gauge to hose. Start engine and increase engine speed to 3000 RPM. EGR valve should not receive vacuum. If vacuum is not available to EGR valve, proceed to HOT ENGINE test.
- If vacuum is present on Legend models, replace thermovalve A and retest. If vacuum is present on rest of models, proceed to EGR CUT-OFF SOLENOID test.