Bad New thermostats - Ford Powerstroke Diesel Forum
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post #1 of 17 Old 02-03-2011, 08:44 AM Thread Starter
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Bad New thermostats

Just wondering how often it happens. The frequency of installing a new Motorcraft poor performing thermostat.

When regular driving (in cool or cold weather it runs up to 194) but, My truck wont maintain 194 ECT when towing in cool weather. Dont think its a air lock cause all the hoses (that I checked), and degas tank are heatin up. I was Towing about 5-6 thousand pound gooseneck and favorited furry hooved riding pal, and EOT got up highest around 212, EOT got highest aroun 224.

2006 F-250 XLT, SCT x3, Insight CTS w/EGT, OEM down pipe-4" exhuast, Flo-Pro 4" performance muffler, Diesel Site Coolant filter, Final Charge ELC coolant. Update Fuel regulator spring, B&W Turnover Gooseneck hitch. Ranch Hand Front Bumper/brushguard.

98 Dodge/cummins 12 valve, 06 Jeep Liberty Diesel
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post #2 of 17 Old 02-03-2011, 08:46 AM
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How cold is the weather

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2011 F150 Ecoboost Crew cab lariat. Custom tunes from KEM and 5Star, and Unleashed
2012 F150 Crew Cab Ecoboost stock for now-Totaled March 12 2015
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post #3 of 17 Old 02-03-2011, 09:06 AM
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Since I remember monitoring my 06, it runs right around 180. Too cold?

Adam
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post #4 of 17 Old 02-03-2011, 09:47 AM Thread Starter
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Quote:
Originally Posted by Dave View Post
How cold is the weather
It was the nicest day for sometime, outside temp about 50 degrees.

2006 F-250 XLT, SCT x3, Insight CTS w/EGT, OEM down pipe-4" exhuast, Flo-Pro 4" performance muffler, Diesel Site Coolant filter, Final Charge ELC coolant. Update Fuel regulator spring, B&W Turnover Gooseneck hitch. Ranch Hand Front Bumper/brushguard.

98 Dodge/cummins 12 valve, 06 Jeep Liberty Diesel
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post #5 of 17 Old 02-03-2011, 09:49 AM Thread Starter
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Quote:
Originally Posted by 89MustangGX View Post
Since I remember monitoring my 06, it runs right around 180. Too cold?

Adam
Adam,

From what I know, I'd have to say your thermostat is opening alittle soon, but it's not too far off. Most seem to have thermostats that operate between 185-194 degrees

2006 F-250 XLT, SCT x3, Insight CTS w/EGT, OEM down pipe-4" exhuast, Flo-Pro 4" performance muffler, Diesel Site Coolant filter, Final Charge ELC coolant. Update Fuel regulator spring, B&W Turnover Gooseneck hitch. Ranch Hand Front Bumper/brushguard.

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post #6 of 17 Old 02-03-2011, 10:13 AM
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The 6.0 Tstat partially opens at 182 degrees.

Email: Dave@powerstroke.org
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2006 F250 ECSB Lariat 4x4

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ARP studs and OEM gaskets done by Renegade Diesel
ECM and Atlas 40 FICM tuned by Bill at PHP SCT tunes by Truck Source Diesel. Gearhead, Innovative, Wildman and Tyrant diesel
Flowmaster/MBRP Hybrid Exhaust
Edge Insight CTS
Coolant filter
Bulletproof diesel FICM EGR Delete, Oil Cooler and Water Pump, and Light bar.
Dually LED lights from Stealth Automotive/Xpedition Outfitters
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post #7 of 17 Old 02-03-2011, 02:46 PM
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I got a "new" bad one. Wouldn't get over 183-186 when cold out. Now with a "new" replacment it runs at 192-196 in the same outside temps. I also got a "new" bad block heater in the same shot. At least I only had to drain the coolant once.

06 F-250 4X4
08 rear bumper and taillights,
Shaeffers 9000 5w40 don't use in your 6.0
GOGO direct solenoid, 08 tranny pan and filter
Edge CTS w/EGT probe.ARP 4" silverline,
fuel pressure reg upgrade, coolant filter, pre-pump spin on fuel filter, ELC,Oil bypass
SCT custom tunes by Vivian@QT and Matt @GH
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post #8 of 17 Old 02-03-2011, 05:14 PM
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I'm planning on changing over to ELC, so I suppose I'll change the t-stat at the same time. See what I end up with then.

Thanks,

Adam
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post #9 of 17 Old 02-03-2011, 06:39 PM
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Quote:
Originally Posted by worldwide73 View Post
I got a "new" bad one. Wouldn't get over 183-186 when cold out. Now with a "new" replacment it runs at 192-196 in the same outside temps. I also got a "new" bad block heater in the same shot. At least I only had to drain the coolant once.
Just out of curiousity what where the ambient temps?

Email: Dave@powerstroke.org
2011 F150 Ecoboost Crew cab lariat. Custom tunes from KEM and 5Star, and Unleashed
2012 F150 Crew Cab Ecoboost stock for now-Totaled March 12 2015
2006 F250 ECSB Lariat 4x4

Leveling kit, 315/70/17 Kelly TSRs on Method race wheels
ARP studs and OEM gaskets done by Renegade Diesel
ECM and Atlas 40 FICM tuned by Bill at PHP SCT tunes by Truck Source Diesel. Gearhead, Innovative, Wildman and Tyrant diesel
Flowmaster/MBRP Hybrid Exhaust
Edge Insight CTS
Coolant filter
Bulletproof diesel FICM EGR Delete, Oil Cooler and Water Pump, and Light bar.
Dually LED lights from Stealth Automotive/Xpedition Outfitters
No Limit Fab 6.0 Cold Air Intake
http://www.bulletproofdiesel.com/default.asp
http://nolimitfabrication.com/
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post #10 of 17 Old 02-03-2011, 06:42 PM
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I'm running anywhere from the teens to 30s right now and before i changed... just changed it a week ago or so

06 F-250 4X4
08 rear bumper and taillights,
Shaeffers 9000 5w40 don't use in your 6.0
GOGO direct solenoid, 08 tranny pan and filter
Edge CTS w/EGT probe.ARP 4" silverline,
fuel pressure reg upgrade, coolant filter, pre-pump spin on fuel filter, ELC,Oil bypass
SCT custom tunes by Vivian@QT and Matt @GH
4440 Front, 3040 rear, 7480 gross. VXCF4
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