The Idle Air Control Valve (IACV) in a 2007 Toyota RAV4 is a crucial component for maintaining proper engine idle speed. Located on the throttle body, this valve regulates the amount of air bypassing the throttle plate when the engine is idling.

IACV Location

The IACV is situated on the throttle body of the 2007 Toyota RAV4. To access it:

1. Open the hood and locate the air intake assembly.

2. Follow the air intake hose to the throttle body.

3. The IACV is attached to the side or bottom of the throttle body.

It's important to note that the exact position may vary slightly depending on the specific engine configuration of your RAV4.

Identifying the IACV

The Idle Air Control Valve can be identified by its distinctive features:

  • Cylindrical shape
  • Electrical connector attached
  • Two coolant hoses connected to it
  • Mounted directly on the throttle body

Accessing the IACV

To reach the IACV for inspection or replacement:

1. Remove the engine cover (if present).

2. Disconnect the air intake hose from the throttle body.

3. Unplug the electrical connector from the IACV.

4. Disconnect the two coolant hoses (be prepared for some coolant spillage).

5. Remove the mounting bolts securing the IACV to the throttle body.

Caution: Always disconnect the negative battery terminal before working on electrical components.

IACV Function

The IACV plays a critical role in engine operation by:

  • Regulating idle speed
  • Compensating for engine load changes
  • Assisting in cold start conditions

A malfunctioning IACV can cause irregular idle, stalling, or high idle speed.

Maintenance Tips

To ensure proper IACV function:

  • Regularly clean the throttle body and IACV passages
  • Check for carbon buildup that may restrict valve movement
  • Inspect coolant hoses for leaks or deterioration
  • Ensure the electrical connector is secure and free from corrosion

Remember, a well-maintained IACV contributes to smooth engine operation and improved fuel efficiency.