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Old 05-14-2012, 06:55 PM   #1
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Black tank always reads 2/3 full

My black tank reads 2/3 when empty. I'm assuming that it may be the sensor? We've really have put up with it for 2 years now. You all think I have a bad sensor? Does anyone make a universal sensor or should I try to get it from the dealer? If I replace the sensor do they typicaly screw out of the black tank or would I just have to disconnect it and re-drill a new hole in the same area for a replacemnt sensor?
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Old 05-14-2012, 07:03 PM   #2
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These black tank sensors are pretty much worthless IMO. "Stuff" gets on the sensor and you get false readings, and this is a constant battle even if you clean the tank and get them working again. Mine is reading 2/3 full right now as well with an empty tank. There are more high end level indicators which are available for purchase, some on this forum have done this mod..
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Old 05-14-2012, 07:43 PM   #3
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If you have the chance fill your black tank half full of water add a couple of those solid dishwasher tablets and drive to your camping area and dump when you get there or along the way, that may help clean it
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Old 05-14-2012, 08:35 PM   #4
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You may also try sending a couple bags of ice into the black tank, after filling it with water. Then tow the camper a ways. The ice and water will kind of "scrub" stuff off of the sensor. Has worked for me before, but sooner or later the sensor will "stick" again.
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Old 05-14-2012, 09:12 PM   #5
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My suggestion - use the eyeball method. When you flush look down the hole and see how full it is. They make a sensor that attached to the outside of the tank, but I just can't get myself to pay that much for it.
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Old 05-14-2012, 09:49 PM   #6
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Quote:
Originally Posted by Crabman View Post
These black tank sensors are pretty much worthless IMO. "Stuff" gets on the sensor and you get false readings, and this is a constant battle even if you clean the tank and get them working again. Mine is reading 2/3 full right now as well with an empty tank. There are more high end level indicators which are available for purchase, some on this forum have done this mod..
Yours reads 2/3 full right now empty, but when it's full does it read full or just always at 2/3?
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Old 05-14-2012, 10:35 PM   #7
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How about just pulling the sensor out and sticking my pinkie finger in there to tell.. Yep it's full!
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Old 05-14-2012, 10:37 PM   #8
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Anyone make an aftermarket sensor?
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Old 05-14-2012, 10:40 PM   #9
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Quote:
Originally Posted by wb2nco View Post
Anyone make an aftermarket sensor?

Pinkies are free though!!
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Old 05-14-2012, 10:43 PM   #10
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...and apparently more accurate!
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