A stepper motor is controlled by the onboard computer. The computer moves the pintle in and out of an opening that bypasses the throttle blade. This allows the computer to precisely control idle speed when varying loads are placed on the engine. Symptoms of failure include engine stalling, surging, poor idle conditions, and or a check engine light. Check for proper operation with each tune-up. Replace when trouble codes indicate failure. Walker Products began supplying the fuel system needs of the automotive industry in 1946. Today Walker is one of the largest, privately owned manufacturers of fuel system components and engine sensors, and has served the needs of the worldwide automotive aftermarket.

Product Features:

• Controlled by the onboard computer
• The computer moves the pintle in and out of an opening that bypasses the throttle blade
• Allows the computer to precisely control idle speed when varying loads are placed on the engine
• Symptoms of failure include engine stalling, surging, poor idle conditions, and or a check engine light
• Check for proper operation with each tune-up and replace when trouble codes indicate failure