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Problem after changing plastic surge tank to metal


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2008 Monaco Camelot. Replaced the plastic surge tank with a metal tank. About 10 mins after starting the Warning light came on. Continued to idle to get pressure up.  No leaks and not running hot. Warning light still on. Any suggestions. TIA

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obviously check fluid level and then low coolant sensor and connector. We have 07 Knight and installed Talon tank which came with new sensor and had no issues. To test sensor unplug and check light, then jump the wires and check the light. One of those 2 modes should put out the light if the sensor is the cause.

 

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I installed a new sensor with the new tank. I will unplug the sensor and check the warning light. Fluids are good. Knightmovesrv suggested jumping the wires. Can you explain that more. Which wires to jump.  Thanks for comments

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Do you know what sensor you installed.

When I replaced my tank I used the plastic type, similar to the original.  I used Ford sensor which is a 2 wire sensor.  I just put the two wires together and then attached to the original sensor wire. 

I believe the system uses a Kysor low coolant alarm modual which actually senses  ground through the coolant system.   If the coolant level falls in the tank the Kysor module not sense ground it sends coolant alarm.  Here's a link to info on it  https://www.wanderlodgeownersgroup.com/downloads/KYSOR ALARMS SERVICE AND INSTALLATION.pdf

So for the system to work correctly the coolant level has to be above the coolant sensor. 

 

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On 6/9/2021 at 7:06 AM, Rlwitt said:

2008 Monaco Camelot. Replaced the plastic surge tank with a metal tank. About 10 mins after starting the Warning light came on. Continued to idle to get pressure up.  No leaks and not running hot. Warning light still on. Any suggestions. TIA

Who did you purchase the replacement tank from?

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Vuerink in MI

Update:  apparently the sensor was the wrong one even though it was a 3 prong. Vuerink said it was right according to computer. Took coach to trucking center today. Code is for that sensor. It seems to always read low and set Warning. They found what appears to be the right one at Cummings in San Antonio.  We’ll know tomorrow if it works 

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56 minutes ago, Rlwitt said:

Vuerink in MI

Update:  apparently the sensor was the wrong one even though it was a 3 prong. Vuerink said it was right according to computer. Took coach to trucking center today. Code is for that sensor. It seems to always read low and set Warning. They found what appears to be the right one at Cummings in San Antonio.  We’ll know tomorrow if it works 

Sweet! They sent the wrong part out for mine as well. I bought the sensor from Ford, but Veurinks sent the wrong pigtail. They sent right one and took other one back no issues. Mine was only 1 wire pigtail in coach and new sensor was 2 wire. Simple crimp and she works great 

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On 6/9/2021 at 8:25 AM, Rlwitt said:

I installed a new sensor with the new tank. I will unplug the sensor and check the warning light. Fluids are good. Knightmovesrv suggested jumping the wires. Can you explain that more. Which wires to jump.  Thanks for comments

Who did you purchase the new tank from?

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When I first bought my coach it had a slight leak developing and I successfully repaired with Gorilla poly glue, which held for +5 years.  I then decided to go ahead and replace.  In ~2014 I just replaced my with the same style but the new version is a better version of plastic/nylon.  Mine still looks like new.  One advantage is you can see the coolant level versus just having a sight glass.  I bought mine from Guaranty RV who had the best price at the time.  Bought the fittings at Lowes and the Ford sensor off Ebay.   https://www.guaranty.com

The original sensor on mine was a long probe that fit down through the top.  The sensor I replaced it with was a FordXC4Z-10D968-AA   https://www.ebay.com/itm/363303882231?epid=1311200436&hash=item5496994df7:g:Sd8AAOSwSUBgNthP

The origianl sensor was a one wire, and as stated earlier, it sensed ground through the coolant.  To test the sensor just disconnect the wires, which should break the ground and the alarm goes off.  Take a wire from ground the the sensor wire and it should shut the alarm off.  The Ford Sensor is a 2 prong type, the sell a wiring harness but I just used 2 small spad connectors and connected 2 wires and then connected to the original 1 wire.  I used silicone to seal the where the wires go into the senor.  The change was not hard. 

 

Veurinks shows they have both the metal and plastic tanks.  https://shop.findmyrvparts.com/searchresults.asp?Search=tank&Submit=

Source engineering may sell them but not listed on their website there is a video of at the bottom showing the tank, but there have been reports of poor welding on these tanks. http://sourcerv.com/ 

Talin use to make them but it won't bring up the link, you can give them a call http://talinman.com/talin-vector-coolant-surge-tank/

 

 

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