Posts: 130
Threads: 36
Joined: Aug 2024
I guess the title says everything… about to start a trip for Christmas and I am not sure if I have to have the engine preheat switch on in order to take advantage of the engine heating the aqua hot?
Gregg and Sue Miley
#639
Nampa / Caldwell Idaho area.
Posts: 296
Threads: 19
Joined: Sep 2024
Nope. The engine water pump will do its thing for you.
Carl Little
1996 Coach 435 Detroit 60
Posts: 130
Threads: 36
Joined: Aug 2024
Thx!!! I figured that was likely the case, but just wanted to be sure.
Gregg and Sue Miley
#639
Nampa / Caldwell Idaho area.
Posts: 5,908
Threads: 266
Joined: Jul 2012
Its a good question. On my 95, there was a booster pump in addition to the engine pump. It kept the coach toasty while driving. The 99’did not have the booster pump, and would not keep the AH system warm enough to keep the interior comfy. Using the engine preheat switch helped a good bit to keep it comfy. But in really cold weathe travel, I turned on the diesel burner.
Richard and Rhonda Entrekin
95 Newell, 390 Ex caretaker
99 Newell, 512 Ex caretaker
07 Prevost Marathon, 1025
Maverick Hybrid Toad
Inverness, FL (when we're home
)
Posts: 296
Threads: 19
Joined: Sep 2024
My 96 has the booster pump for dash heat as well. I did forget to turn of the Diesel burner one morning on the drive across the country and promptly overheated things. Engine temps wouldn't get below 210. I had to pull over and let things cool off. Thats when I heard the diesel burner kick on, shut it off and problem solved. Right back to 185 where it should be.
Carl Little
1996 Coach 435 Detroit 60
