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Water Temp Gage
07-09-2015, 00:17
Post: #1
Water Temp Gage
My water temperature gage has gone haywire. It never gets over 160*f. I use a Silverleaf engine monitor to watch my coolant temps so I don't depend on the analog gage. But I need to fix it as a backup coolant monitor. One never knows when the computer screen may go blank.

So, I've looked for the water temp sending unit on the engine and the only one I have found is plugged in to the side of the coolant tank above the engine.

Does anyone know if this is the water temp sending unit or is it just the coolant level monitor (CLLVL)? If this ain't it, where is it?

Chuck & Tela Millsap
2003 Prevost Marathon XLII
2000 LXi #2 S/S (Sold)
2004 M380 D/S (Sold)
2000 LXi #1 N/S (Sold
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07-09-2015, 00:43 (This post was last modified: 07-09-2015 00:44 by davidbrady.)
Post: #2
RE: Water Temp Gage
My LXi had two coolant temp sensors mounted on the head behind the turbo. İmage

The shiny one is the DDEC ECM sensor; the one to the right is the dash gauge sensor. The DDEC ECM sensor is shiny because I replaced it.

On the way home from Kamloops CN, my H3's dash coolant gauge started to go whacky. I stopped in at Prevost in Goodlettsville, TN to have them replace the sensor. My H3's S60 has only one coolant temp sensor. The dash gauge uses the same sensor as the DDEC ECM. They do go bad. It's worked flawlessly since.

david brady,
'02 Wanderlodge LXi 'Smokey' (Sold),
'04 Prevost H3 Vantare 'SpongeBob'

"I don't like being wrong, but I really hate being right"
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07-09-2015, 00:50
Post: #3
RE: Water Temp Gage
Thanks, David. I knew you knew Big Grin

Chuck & Tela Millsap
2003 Prevost Marathon XLII
2000 LXi #2 S/S (Sold)
2004 M380 D/S (Sold)
2000 LXi #1 N/S (Sold
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