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High temperatures on the DII... Bad thermostat?

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5 replies to this topic

#1
lilcrawler

lilcrawler

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I noticed my factory gauge start to climb towards the read as I was driving on the highway at 55mph. The outdoor temperature was 116°F, so I did t think too much of it, I just turned on the heat, and the gauge returned to normal rather quickly. Today I was cruising at the speed limit of 75 when it was 101°F, and my water temperature went up to 231(measured on the new Scanguage). That seems quite high to me. I have noticed a pinhole leak in my lower radiator hose, so would it be worth doing the thermostat with the hoses? Around town the water temperature stuck to around 215°F.
Thanks,
Tyler
Tyler
2004 DII- Not modified heavily enough

I get below 15 mpg on Fuelly!
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#2
lutz

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if your going to do it put a 180 degrees thermostat. Btw have a good time in college


Edited by lutz, 15 August 2015 - 07:18 PM.

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KK6QGU
04 Discovery 2-Trail truck- RTE 3in with fox 2.0 shocks, $g rear cones ,$G front bumper with Warn XD9000i custom rear,ARB's air lockers F&R with Ashcroft 4.12 w/reverse cut front , Ashcroft HD axles/CV's, RTE diff guards F&R , Max Yedor HD tie rod and track rod,custom watts, 255/85-16 MAXXIS MT-762 BIGHORN

99 Discovery 2 -Parts truck

2008 lr3

http://www.pacificadventuretours.com/


#3
lilcrawler

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Thanks! I'm not sure if it has one in it already, but I'm pretty sure it doesn't. It just strikes we as odd that it is warmer on the freeway than idling around town.
Tyler
2004 DII- Not modified heavily enough

I get below 15 mpg on Fuelly!
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#4
lilcrawler

lilcrawler

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I sprayed out the radiator a little bit, and it was sitting around 225instead of the 232 yesterday. Exact same drive, still 101°F out. Based upon the fact that it's cooler around town, I don't think it's the thermostat. I guess it's time to pull the rad out for a cleaning, and do a chemical flush along with the all the hoses. We'll see what it does them.
Tyler
2004 DII- Not modified heavily enough

I get below 15 mpg on Fuelly!
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#5
GraemeWare

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Tyler,

 

Cow Mountain dust ... good for at least 10 degrees on Katrina .... I couldn't even see the radiator fins .... that'll happen when you run 30 miles or so at high speed tailgating another vehicle.

 

Graeme


Graeme Ware -- San Carlos, CA

1990 Range Rover Classic - LT230 Transfer box, Warn winch, 2" lift, 235/85-16 Dunlop MUD Rovers, "Blue Submarine"
1996 Discovery 1 (R380 Manual Transmission, Ashcroft under-drive, RoverWare rear bumper, 33x12.5-15 BFG ATs) -- we call her "Katrina" -- Fordyce 7.5 mile survivor
1999 Discovery 2 (D1 CDL Linkage, 265/75-16 BFG A/T KO, RoverWare front and rear bumper)
1993 Jaguar XJS convertible; 1971 Triumph GT6; 1959 Morris Minor convertible
other assorted British pot metal ...


#6
willie101abn502

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Use the thermostat for a d2 diesel, lower temperature for summer, not good for winter

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