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. After removing the old IAC Valve, clean the mounting flange surface with a plastic scraper; place the included gasket onto the flange, align the bolt holes, hand-start the screws, then tighten the Idle Speed Control Valve in a diagonal sequence to the torque value shown on the housing. 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