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Old 07-26-2008, 08:46 PM   #1
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Our 2003 KSDP (Cat engine) has been parked for five days but the radiator is still warm. This was true even this morning after temps reached the mid-50's overnight. The only heater in the engine bay I know of is the air inlet heater. Is there something else that would be causing the radiator to stay warm?
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Old 07-26-2008, 08:46 PM   #2
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Our 2003 KSDP (Cat engine) has been parked for five days but the radiator is still warm. This was true even this morning after temps reached the mid-50's overnight. The only heater in the engine bay I know of is the air inlet heater. Is there something else that would be causing the radiator to stay warm?
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Old 07-27-2008, 03:14 AM   #3
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If it is plugged into shore power, the block heat may be on.

Peter
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Old 07-27-2008, 05:07 AM   #4
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My 2004 DSDP has a rocker switch, inside the MH, to turn on the engine block heater. It would be pretty easy to engage it and not realize it is on. There is also a cord for the heater in the electrical bay that needs to be plugged in for the heater to work. I make sure it is not plugged in.
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Old 07-27-2008, 05:30 AM   #5
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Ah, so that's what that cord in the electrical bay is. Not being labeled and being plugged in when I bought the coach, I've been afraid to unplug it.

But, the switch in the coach says it's off. I'll have to break out the multimeter and see if maybe the switch is faulty (very carefully, as I assume it's switching 110V).

Sometimes I feel like I'm missing a manual of some kind. I can find nothing anywhere that references the block heater. "Air inlet heater," yes; "Block heater," no.

Thanks!
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Old 07-27-2008, 05:33 AM   #6
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The block heater is 120 volts and unfortunately, there are many things not in the manuals.
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Old 07-27-2008, 06:27 AM   #7
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<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by ViperDriver:
I'll have to break out the multimeter and see if maybe the switch is faulty (very carefully, as I assume it's switching 110V). </div></BLOCKQUOTE>

Why not just test the outlet in the electrical bay to see if it's hot. My block heater switch is in the upper cabinet above the passenger seat, just a typical wall switch & plate that also wasn't marked. I also leave it unplugged.
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Old 07-27-2008, 06:53 AM   #8
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On the KGDB, the plug in is the engine compartment. I keep in unplugged on the advise of the PDI tech. The cover plate for the outlet is only waterproof when it's not plugged in.

joe
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Old 07-27-2008, 05:55 PM   #9
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As ET suggested, I plugged a tester into the outlet and found that the switch is intermittent. After playing with the switch some more, I realize that it is defective--there are no solid on/off positions. My solution for now (warm weather) is to just leave it unplugged.

Thanks to everyone for your help.
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Old 07-27-2008, 06:31 PM   #10
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ViperDriver

I would make sure that switch is changed before you Re-Plug your block heater back in. Arcing could occur under a load at the switch and of course we all know that could be a big No-No. I might even look to see if the Block Heater outlet is on it's own Circuit Breaker and close it down as well until the switch is changed out. Obviously if you're not on shore power and the generator and inverter are off it would be safe to change it out. What ever you decide be safe and enjoy your RV
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