OEM Idle Air Control Valve for 1999-2002 Nissan Pathfinder models equipped with the VG33E powertrain.

The Idle Air Control (IAC) valve is a component of the engine's air intake system that helps regulate the engine idle speed. It works by adjusting the amount of air that bypasses the throttle plate when the throttle is closed. The IAC valve is typically located on the throttle body and is controlled by the engine control module (ECM).

There are several signs that the IAC valve may need to be replaced:

• Unstable or high idle speed: If the IAC valve becomes dirty or fails, it may not be able to regulate the engine idle speed properly. This can cause the engine to idle too high or too low, or to surge.
• Engine stalling: A malfunctioning IAC valve can cause the engine to stall when coming to a stop or when the throttle is released suddenly.
• Check engine light: A faulty IAC valve can trigger the engine's check engine light.
• Rough idle: A dirty or malfunctioning IAC valve can cause the engine to idle roughly or vibrate excessively.
• Poor fuel economy: If the IAC valve is not working properly, it can cause the engine to consume more fuel than necessary, leading to poor fuel economy.

Additionally, it is recommended to clean the throttle body and intake manifold when replacing the IAC valve to ensure optimal performance. If the IAC valve is not replaced in a timely manner, it can lead to other engine problems, such as increased emissions, reduced engine performance, and damage to other engine components.

Please refer to the diagram provided to verify part placement.

Fits:

• 1999-2002 Nissan Pathfinder
  • VG33E equipped