Source for 160* thermostat DT466E
#11
08-21-2007, 02:25 AM
YA I know thats a thing of the past and whats ticks me off some engineer says it has to run this way to make EPA happy but neither has to drive a truck that sounds like a 747 at take off. I just want a truck that is half way pleasent to drive and that won't require ear plugs to keep from gettin a headache. Thanks for you alls help I guess there is a way to make it right. I just wondered if you all could help me fined aT-stat that just might fix my problem. Oh well back to the jet plane tomorrow.
Jed 
#12
08-21-2007, 03:01 AM
A few questions:
- Do you guys have bug screens on? They're notorious for cutting down flow - Are the trucks well maintained? The t-stat is fully open past 190. Since the temp goes all the way up to 215, either there is a problem, or the cooling system is undersized.
#13
08-21-2007, 10:10 AM
I know on cars the thermostat rated temp is the temp at which it starts to open, fully open is twenty degrees later so I can beleive he runs at 205. Seems to me the newer trucks have pretty skimpy radiators for aerodynamics reasons. If you have room in front of the radiator you could buy a 16 inch electric "radiator fan" off of ebay for under $50 and wire it up to a switch so you can leave it on when needed - it would probably cool things enough to keep the main fan off. My cooling system is so oversized on this FLD120 that I'm tempted to pull the fan and go electric - my fan clutch is leaking air quite a bit anyways and in trying to get to that I'll proibably destroy the fan getting it off as one of the studs it mounts on is loose and spinning freely. :sad:
#14
08-21-2007, 01:58 PM
Take your truck to a mechanic that knows DT466's and find out if there is a pressure diaphgram switch mounted to the AC compressor. If this goes bad the fan will run almost all the time. I had this switch go bad on my DDS60 and the fan ran all the time.
On the DDS60 operating temps, I have never driven one even at -5 degrees that ran below 185 degress after it was hooked up to a load and warmed up. In the summer 188/192 @ 85 degress. Hard heavy pull fan comes on at 205/207
#15
08-23-2007, 02:02 PM
Originally Posted by roadranger
Originally Posted by allan5oh
Changing the t-stat won't do a thing.
that's too cold
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