Pair Valve

Start engine, and bring it to full operating temperature. With engine at idle, PAIR should operate. Raise engine speed to greater than 2000 RPM, and then allow it to return to idle. PAIR should not operate during acceleration and should operate on deceleration. If PAIR does not operate as specified, check vacuum hoses and PAIRC-solenoid valve. See PAIRC-SOLENOID VALVE. If hoses and solenoid are okay, replace PAIR valve.