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Old 06-23-2015, 05:16 PM   #1
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Where is gray tank sensor located?

The gray tank sensor in my 2014 17B has been reading 2/3 full, even after fully emptying the tank. I've tried calgon in the tank which didn't do anything. I bought a 3.5' flexible wand and flushed up into the gray tank drain pipe. That also did nothing to change the reading. I'm wondering where the sensor is located and if a little more flushing in that spot would help. Any ideas would be appreciated.
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Old 06-23-2015, 05:21 PM   #2
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Reace told me to pour a few gallons of water into the tank along with some Dawn dish detergent and then drive. Empty at destination.
Haven't done it myself.
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Old 06-23-2015, 05:27 PM   #3
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This may have more info

Stuck grey tank sensor
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Old 06-23-2015, 05:57 PM   #4
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The sensors are well known to read as yours does, just the nature of the beast unless you opt for after market like Robert did, and I forgot http://www.rvprobes.com/home.html. I'm trying the dish detergent trick this year but not holding my breath. You get used to it being wrong after a while.
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Old 06-23-2015, 06:03 PM   #5
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Quote:
Originally Posted by sharonm3394 View Post
The gray tank sensor in my 2014 17B has been reading 2/3 full, even after fully emptying the tank. I've tried calgon in the tank which didn't do anything. I bought a 3.5' flexible wand and flushed up into the gray tank drain pipe. That also did nothing to change the reading. I'm wondering where the sensor is located and if a little more flushing in that spot would help. Any ideas would be appreciated.
The sensors (there are 3 on the tank) are located on the side. Easy to see because there are wires attached. If you don't want to go to the expense and trouble of installing Horst Probes, I second Reace's and others recommendations for tank cleaning with a stronger solution- like Dawn.
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Old 06-23-2015, 06:59 PM   #6
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grey tank sensor

I'm showing 2/3 full always now. On the way home I'll buy some dawn dish soap and pour some of it, probably the whole bottle in the tank with some water and dump it when I get home, 400 miles. This has worked in the past for us. Dawn is what people use to clean birds when caught in oil spills and it is in the mixture for cleaning windows.

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Old 06-23-2015, 07:14 PM   #7
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We use the soles of our feet as grey water sensors. Soon as we feel water on the floor of the bathroom, it's time to drain.
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Old 06-23-2015, 07:58 PM   #8
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Dawn is what people use to clean birds when caught in oil spills and it is in the mixture for cleaning windows.
And it's what I use to completely strip the wax off a vehicle before claying. My wife uses it to do the dishes. Go figure.
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Old 06-23-2015, 10:28 PM   #9
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I have spray-on insulation on the bottom of my Escape, so I can't see where anything is. Maybe I'll try the dawn dish detergent trick. If that doesn't work I'll just have to get over being annoyed at the false reading.
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Old 06-23-2015, 10:50 PM   #10
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I'll just have to get over being annoyed at the false reading.
Or you could get a voltmeter and a multi-meter and a hydrometer, and worry about your battery condition instead.
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