EGR Thermostatic Valve

Disconnect thermostatic valve hoses. Blow through valve. Valve should be closed when temperature is less than 110°F (43°C) with on-off and two-port systems, 68°F (20°C) on 900 models, and 86°F (30°C) on 9000 models with proportional systems. Valve should be open when temperature is greater than that listed. Replace EGR thermostatic valve if it does not operate as described.