When the engine experiences a sudden idle drop when the air conditioning compressor clutch engages, this Idle Speed Control Valve senses the load increase and adds bypass air before the compressor fully engages; the IAC Valve works with the ECU to prevent the rpm dip that causes noticeable hesitation. The Idle Control Valve uses a return spring made of selected spring steel wire with force treatment, and the Idle Air Control Valve ensures that after one hundred thousand cycles the spring constant change remains below five percent, keeping the plunger return reliable. Before removing the old IAC Valve, disconnect the battery negative terminal and let the engine cool; take a photo of the vacuum hose connections and component orientation for reference, then loosen the two mounting bolts and pull the Idle Speed Control Valve straight out without twisting; install the replacement part with the included gasket and tighten the screws diagonally. Friendly Reminder: To ensure accurate selection, please compare the product images and specifications before ordering to confirm that the parts match your vehicle model. If you have any questions before or after placing your order, please customer service. We will provide detailed answers and assist you in finding the appropriate solution., Manufacturer: SZYNBQ