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Home >> Saab >> 1987 >> 900 S, 2D Hatchback, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> EGR System >> Testing >> Thermostatic Valve
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Thermostatic Valve

Disconnect thermostatic valve hoses. Blow through valve. Valve should be closed when temperature is below 110°F (43°C) on on-off and two-port and 68°F (20°C) on proportional systems. Valve should be open when engine temperature is above that listed. Replace thermostatic valve if defective.

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