Section 546 (5.7L Engine (Service Information)): Solenoid-MDS: Description
WARNING: This page is about a different car, the 2005 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
The Multi Displacement System selectively deactivates cylinders 1,4,6, and 7, to improve fuel economy. It has two modes of operation :
- 8 cylinders for acceleration and heavy loads.
- 4 cylinders for cruising and city traffic.
The main components of the Multi Displacement System are :
- Unique MDS camshaft.
- Deactivating roller tappets.
- 4 control valves/solenoids.
- control valve/solenoid wiring harness.
- oil temp sensor.