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05-20-2017, 12:09 AM
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#1
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Member
Join Date: Sep 2016
Location: Monticello, MN
Posts: 91
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Low Coolant Light on but Coolant is not low
Hey guys,
My Low coolant light is on and I have checked the coolant and it is not in fact low, and the engine never runs hot. Any Ideas? Thanks
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05-20-2017, 12:11 AM
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#2
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Member
Join Date: Sep 2016
Location: Monticello, MN
Posts: 91
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Basement Latches
Hey guys,
Does anyone have a resource for basement latches? I have one that needs to be replaced and ordered one off the internet to find out it is not the right one. Thanks
2000 Diplomat
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05-20-2017, 03:12 AM
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#3
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Senior Member
Monaco Owners Club
Join Date: Nov 2016
Posts: 225
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Quote:
Originally Posted by Jfreeman
Hey guys,
My Low coolant light is on and I have checked the coolant and it is not in fact low, and the engine never runs hot. Any Ideas? Thanks
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I just had the same problem. I removed the sensor ( located on top of the expansion tank) and cleaned it with an Emory cloth. I also cleaned up the wire connection to it. Have had no issues since.
__________________
Scotia, Tricia, Mia, (the Labradoodle)
1999 Monaco Dynasty
330hp Cummins, Allison 6 speed
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05-20-2017, 03:17 AM
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#4
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Senior Member
Join Date: Mar 2017
Posts: 528
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Quote:
Originally Posted by Jfreeman
Hey guys,
My Low coolant light is on and I have checked the coolant and it is not in fact low, and the engine never runs hot. Any Ideas? Thanks
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Bad sensor comes to mind. Or damaged wiring to sensor
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05-20-2017, 11:49 AM
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#5
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Member
Join Date: Sep 2016
Location: Monticello, MN
Posts: 91
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Great Guys, Thanks! I will take the sensor out and try cleaning it and check the wiring and report back thanks and sorry about the double post in this thread. (Must have been late)
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05-21-2017, 06:56 PM
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#6
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Member
Join Date: Sep 2016
Location: Monticello, MN
Posts: 91
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So I took the probe out of the tank and cleaned it up but no dice......Does anyone know if:
1. You can ground the switch out to test and make sure it's the switch or test it with an Ohm Meter?
2. Is this a common part available at any truck or auto parts store? Or a part number if anyone knows it?
Thanks!
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05-21-2017, 08:48 PM
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#7
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Senior Member
Join Date: Mar 2013
Posts: 168
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Had the same issue but only when the headlights were on. Monaco service tech installed a heaver gauge ground wire. Fixed the problem,
__________________
2000 HR Imperial 38 WDS
350 Cummins, Aero Muffler & AFE Filter
980 watt solar, 600 amp/hr LiFePo4, Victron
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05-21-2017, 09:25 PM
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#8
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Member
Join Date: Sep 2016
Location: Monticello, MN
Posts: 91
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Interesting, Mine is on all of the time and only has one wire going to it. I can't find a replacement part anywhere, everything I have researched has everyone switching tanks and having the sensor mounted on the side of the tank and not the top.
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05-22-2017, 04:55 AM
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#9
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Senior Member
Monaco Owners Club
Join Date: Sep 2014
Location: UK
Posts: 542
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Mine comes on when the engine is first turned on then goes off about 5 minutes later, interesting about the earth I might investigate that.
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05-22-2017, 06:51 AM
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#10
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Senior Member
Monaco Owners Club
Join Date: Nov 2016
Posts: 225
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Try a "jumper" wire from the probe connection to a good solid ground location. See if light/alarm goes off.
A good ground is critical.
__________________
Scotia, Tricia, Mia, (the Labradoodle)
1999 Monaco Dynasty
330hp Cummins, Allison 6 speed
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05-30-2017, 04:23 PM
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#11
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Member
Join Date: Sep 2016
Location: Monticello, MN
Posts: 91
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Quote:
Originally Posted by Scotialaddie
Try a "jumper" wire from the probe connection to a good solid ground location. See if light/alarm goes off.
A good ground is critical.
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It does not go off when Grounded, does that mean bad wiring some where? Where do I start? 
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05-30-2017, 05:49 PM
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#12
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Senior Member
Monaco Owners Club
Join Date: Nov 2016
Posts: 225
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Possibly a break in the wire. Do you have a wiring diagram for your coach? I'll check mine tomorrow when I get where I'm going. Maybe I can help shed some light. I'm a retired electrician and can't help trying to solve a good mystery!
__________________
Scotia, Tricia, Mia, (the Labradoodle)
1999 Monaco Dynasty
330hp Cummins, Allison 6 speed
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05-30-2017, 08:29 PM
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#13
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Member
Join Date: Sep 2016
Location: Monticello, MN
Posts: 91
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That'd be great, Thanks!
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05-31-2017, 05:46 AM
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#14
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Senior Member
Monaco Owners Club
Join Date: Apr 2010
Location: Saint Leonard,MD
Posts: 750
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You probably have the kysor module floating behind the dash. This was in my 99 Windsor. This schematic might help. Very poor design all around.
__________________
2005 Safari Panther Diamond IV Cat C13
2013 Avalanche Toad
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