engine brake while towing?
OK, so just getting a feel for towing my 5er with the 2013 Ram Cummins. When tow enabled (heavy tow used with appropriate tire pressure) and engine brake on, going downhill after taking foot off gas ...
Forum Discussion
wilber1 wrote:
You haven't increased pressure, you have just use the existing pressure to give a greater velocity to a smaller volume of water. The pressure drops as soon as the water leaves the nozzle.
"The solenoid is typically constructed so that when current is not applied, or lower current is applied to the solenoid, it will block an exhaust and cause line pressure to increase. As current flow increases, the magnetic field produced by the coil, moves the solenoids plunger further away from the exhaust port. Opening the exhaust port decreases the output fluid pressure, ultimately decreasing line pressure. The solenoid is typically wired so that voltage is provided anytime the ignition key is in the RUN or CRANK position. The processor energizes the solenoid by grounding a control circuit."
DELPHI Pressure Regulation-Electronic
You might want to call Delphi to tell them they got it wrong and that closing a solenoid does not cause a pressure increase. While you are at it, tell them how you think the pump rpm is what causes a delayed shift. They might get a good laugh out of that.
