Mr.Mark wrote:
Holstein13, are you sure you don't have an electric auxiliary pump? I recall our previous Dynasty had one as I would hear it click on occasionally to keep the air bags up for leveling.
I know we have one on our current coach as 'air' is very important to our coach. We have air valves for everything.
-air operated tilt/telescope steering wheel
-air operated step cover floor slide
-air operated driver's seat
-2 air doors (like in star trek).
-air valves for sewer, fresh water release
-air flush toilets
etc.
Also, our engines have a heat grid to heat the cylinders. I have a coil icon that comes up on the dash if the engine is cold. I hold the start until the light goes out, then I'll start. Sometimes after the light goes out, it will come back on after starting for a few seconds as needed.
Yep, I'm 100% sure I don't have an electric auxiliary pump. The steering wheel, step cover, drivers seat and toilets are all electric. I don't have air doors and my sewer valves are manually operated.
Here's how my startup procedure works. When I turn the key to the on position, the electric fuel pump engages and the fuel rail begins to heat up. The system runs through all of its diagnostics as well. Once the fuel is hot enough and the diagnostics are complete, the engine light will extinguish and I turn the key on. (I can turn it on earlier if I wish). I then hit the high idle immediately but the engine warmup protection will not allow the engine to increase RPMs until the oil pressure is achieved. The engine maintenance light stays lit during this period (less than 10 seconds). I can proceed immediately after the light goes off.
There is no more warm up period for the ISX15 engine and probably all their engines. It's turn on the engine and go. I just got off the phone with Cummins and they confirmed no warm up and no idling. Just go as soon as the engine lets you go.
