Idle Air Control Valve Compatible with Mercury for Cougar 1999-2002 for Mystique 1997-2000 Idle Air Control Valve IAC Valve Auto Replacement Parts 978F9F715AB F7RZ9F715AB

Idle Air Control Valve Compatible with Mercury for Cougar 1999-2002 for Mystique 1997-2000 Idle Air Control Valve IAC Valve Auto Replacement Parts 978F9F715AB F7RZ9F715AB

TUDEXX

When the engine experiences a sudden idle drop when the air conditioning compressor clutch engages, the additional load from AC can pull engine speed below normal; this component senses the load increase and adds bypass air before the compressor fully engages, preventing the rpm dip that causes noticeable hesitation. The precision-ground valve seat and plunger tip geometry are matched to create a metal-to-metal line seal when fully closed; this design keeps leakage within a very small range while still allowing fine air metering through the gap between tapered surfaces at small openings. After removing the old unit, use a clean cloth to temporarily cover the open intake port to prevent debris from falling into the intake manifold; remove the cover just before installing the replacement part, ensuring no fibers remain on the sealing surface. Precise idle speed control avoids unnecessary fuel consumption, helps reduce idling fuel consumption, and enhances your driving experience; Friendly reminder: To ensure this product is suitable for your vehicle, please carefully review our product details images and descriptions before purchasing;, Manufacturer: TUDEXX

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