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Old 09-10-2019, 09:41 AM   #1
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Location: SW FLORIDA
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Coolant gage failed

The dash engine coolant gage failed on out 2003 Monaco Diplomat. Anyone know a source for a replacement gage. It is the dash gage reading 0 to 250 degrees.

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Old 09-10-2019, 10:30 AM   #2
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Good morning SNAIL1; OK, not 100% sure, but I think the gauges are made by Bedee. Again, not sure of the manufacture. Go to Visone RV salvage and they have quite an assortment of gauges out of Monaco and Holiday Rambler coaches. Have looked at them many times. See if one on their web site matches yours. Just asking, is the gauge itself bad or is the sending unit not working correctly. Had the sending unit go south on my previous 2000 Monaco Windsor. I had the sending unit replaced when the coach was in for a coolant change and everything worked correctly. Hope this information helps and good luck! Also grounding of the dash gauges is critical for then to work correctly.

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Old 09-11-2019, 06:36 AM   #3
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Location: Mesa, AZ
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Monaco dasy changed all the grounds on their gages so you may see other gages not reading correctly. I went with a Scanned D gage and I love it. More accurate than anything else in panel. Amazon and many other places sell them and I think you can choose to show four gages at a time from a total of 24.
TimAZ Full Time from 12-15-18 - Still Working :-(
2000 Dynasty, Banks Turbo & McCabe 5" dia Exhaust
430 HP 1296 T...11+ MPG 2005 Pilot TOAD + 2 E-Bikes
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