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Home >> Plymouth >> 1978 >> Arrow Base, Automatic Trans >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Auto. A/C Systems >> Testing >> System Check Valves >> Check Valve No. 1 Installed Backwards

Check Valve No. 1 Installed Backwards

Same as with leaking valve. Also, with a cold engine, blower will not come on when "DEFROST" or "HI-DEFROST" button is pushed.

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