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Old 09-23-2013, 09:23 PM   #1
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Abclipper's Avatar
Join Date: Sep 2011
Posts: 845
Cool heater on diesel pusher

Just wondering our dash heater only puts out any decent heater when engine works like climbing a hill, on the flat it is just warm. The engine temp gauge is in the normal position on the flat and when climbing a hill the temp does rise and the cooling fan cut in and out as it should and then dash heat is okay I have seen this concern posted before.
So I was thinking if the engine temp is normal on flat hwy if any one has installed a 12 volt heater coolant booster pump in the heater supply line to increase flow to dash heater to get the hot engine coolant there faster and not cool down on the way to the dash heater.
I know on coaches and school buses they use these booster pumps but I have never seen them on a motorhome would like input on this please.

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Old 09-24-2013, 12:09 AM   #2
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Join Date: Apr 2011
Location: Powell River, B.C.
Posts: 11,949
I'd say go for it , and post pictures of the install.
Also for others who ; like myself ; might be interested in doing the same , part numbers would be nice.

99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.
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Old 09-24-2013, 12:30 AM   #3
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Join Date: May 2011
Location: Vancouver, WA
Posts: 22,344
Had that problem yesterday. Temps if the low 60°'s, only time the heater put out much was when climbing a ¾ mile hill. Should have started the gen and used one of the 1500w cube heaters up front.
2009 45' Magna 630 w/Cummins ISX 650 HP/1950 Lbs Ft
Charter Good Sam Lifetime Member, FMCA, SKP
RV'ing since 1957, NRA Benefactor Life, towing '05 Odyssey
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