Water Pump Bypass
WARNING: This page is about a different car, the 2013 RAM 3500 HD and 2013 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
| 1 - FROM HEATER AND DEGAS CONTAINER |
| 2 - FROM RADIATOR |
| 3 - TO WATER PUMP |
| 4- THERMOSTAT |
The 3.7L and 4.7L engine uses an internal water/coolant bypass system. The design uses galleries in the timing chain cover to circulate coolant during engine warm-up preventing the coolant from flowing through the radiator .