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  #1  
Old January 27th, 2013, 12:16 PM
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Brett
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Cool Runnings

Got a problem with heat, or lack there of, in my 110. Engine is a 300Tdi. I noticed over the last couple months the temp gauge has been reading lower and lower. Now is barely rises off the cold mark and there is next to no heat from the heater. Coolant level is fine. WTF? It has been fine in past winters temp and heat wise. Only thing I can figure is maybe the thermostat is sticking in the open position. Would this cause over cooling? Makes the morning commute in -20c a chilly affair. I have noticed that if I have the block heater plugged in for a couple hours, the temp gauge actually comes up a little bit higher but not a lot of extra warm out of the heater.

Any other ideas or thoughts?

Brett
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  #2  
Old January 27th, 2013, 12:35 PM
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Arran Thomson
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Sounds like your thermostat is blocked open
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  #3  
Old January 27th, 2013, 01:49 PM
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Steve Maietta
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is there a viscous fan coupling like on the v8's? could be stuck "on"..
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  #4  
Old January 27th, 2013, 05:15 PM
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Brett
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Quote:
Originally Posted by revtor View Post
is there a viscous fan coupling like on the v8's? could be stuck "on"..
Fan spins freely. There is some resistance but it is not seized or anything. Looks like I need to scare up a new thermostat. Hope somebody has them in stock.

Brett
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  #5  
Old January 27th, 2013, 05:57 PM
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Jason England
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Thermostat failed open. Some are designed to do that. No big deal.
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  #6  
Old January 27th, 2013, 08:58 PM
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Neill Thornton
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I didn't have any problem getting one from Rovers North when I replaced mine.
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  #7  
Old January 27th, 2013, 09:00 PM
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Change thermostat. Block radiator with a muff or cardboard.
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  #8  
Old March 9th, 2013, 07:37 PM
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Do you guys use a 74 or 82 degree thermostat on your diesel?
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  #9  
Old March 9th, 2013, 11:28 PM
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Your problem is almost 100% assured a stuck open thermostat. 192 degrees is what you want. Other modern diesels out run as high as 205*F. I myself built a 198*F by combining 2 Mororad thermostats. Look up threads on "300tdi thermostat" on this forum.

------ Follow up post added March 9th, 2013 09:30 PM ------

Quote:
Originally Posted by javelinadave View Post
Do you guys use a 74 or 82 degree thermostat on your diesel?
Factory calls out 192*F
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