Variable Dynamic Effect Intake-Air (VDI) Actuator Inspection
WARNING: This page is about a different car, the 2005 Mazda RX-8. However, it is still accessible from the selected car via links, so may be relevant.
- Disconnect the VDI actuator vacuum hose.
- Install the vacuum pump to the VDI actuator.
- Verify that the rod moves as indicated in the table below when gradually applying a vacuum to the VDI actuator.
- If it fails, replace the VDI actuator. (See INTAKE MANIFOLD REMOVAL/INSTALLATION .)
ROD MOVEMENT REFERENCEVacuum (kPa {mmHg, inHg}) Rod movement -3.6 {-27.0, -1.1} or more Starts to move -27.9 {-209.2, -8.2} or less Fully pulled 1.2 {9.0, 0.4} or more Fully returned