Motor gettin HOT.

[Danderson]

Originally Posted by Bigrok

I would go get a new thermostat to start. Then if that doesn't fix it, take a look at the water pump.

x2 on that. When I first got my '07 the temps would vary all over the place. Within a few weeks,it settled down. I suspect the block had been sitting around for awhile prior to installation. I'd get a new thermostat from Cummins.

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'07 2500 SLT,5.9,reg.cab.,G-56, 4wd,8' Northstar popup 24/7. Carli,Defiant,Kore,Lorenz and MADS.

[cumminator]

lowest thermostat i can find is a 190, anyone know of a lower one?

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2006 2500 auto, tranny-everything but the shafts, Banks Intercooler, CAI, Ram Air, and Dual Exhaust, Smarty TNT, EZ, HTT 64/71, Performax Gauges, AD 150, Arson 3, Flux 2.0s
For Sale: HTT SuperDave(s480), Source Automotive Twin Piping
"Thanks to Chuck @ New Era Diesel"

[cumminator]

so should i get one straight from the dealer/cummins or will an autozone unit work?

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2006 2500 auto, tranny-everything but the shafts, Banks Intercooler, CAI, Ram Air, and Dual Exhaust, Smarty TNT, EZ, HTT 64/71, Performax Gauges, AD 150, Arson 3, Flux 2.0s
For Sale: HTT SuperDave(s480), Source Automotive Twin Piping
"Thanks to Chuck @ New Era Diesel"

[gassernomore]

I went to the local big rig shop in utah and got it from cummins the part #is 3967195. Trust me its worth it go with the 180

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99 2500 4x4 / Edge EZ / Isspro Fuel Gauge / Turbo Timer / Raptor 150 / Scan Gauge II

06 2500 4X4 / Edge Attitude / Straight Piped

[CumminsSoldier04]

i'll have to try this mine does the same thing cumminator. i replace my thermostat when i left texas and has been doing this all the time. i never really thought about it until now that maybe i need a lower t-stat.

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2004 Dodge Ram 2500 QC LB H.O. (305 HP) CFM + intake manifold, 4inch Silverline Turbo Back Exhaust, AEM Brute Force HD Intake system, ISSPRO Gauges (Boost, Pyro, Trans), Custom grill inserts, Recon smoked cab lights, Predator Power Puck

[cumminator]

well i think im goin to flush the whole system and put in a lower thermostat if i can find one, if not ill just put a 190 back in and go from there. i know the fluctuation of the temperatures cant be right, im reading a thread right now in the 98.5-02 sec. that suggest that air could be in the system causing the thermostat to open and close late. also mentioned to check the head gasket for leaks as it may be letting air in also.

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2006 2500 auto, tranny-everything but the shafts, Banks Intercooler, CAI, Ram Air, and Dual Exhaust, Smarty TNT, EZ, HTT 64/71, Performax Gauges, AD 150, Arson 3, Flux 2.0s
For Sale: HTT SuperDave(s480), Source Automotive Twin Piping
"Thanks to Chuck @ New Era Diesel"

[LR11]

? do you know what the temps actually are. I ask because you are putting a lot a faith in that guage. Try the old meat themometer(sp?) trick before you get to tearing into the engine. It sounds like everthing is working right, it is opening up closing off and opening up again just that the guage actually reads high.

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05 hd 25 laramie 6sp and still stock

[gettyupgo]

I have a 03 and mine runs 195 to 205. Shouldnt these trucks run in that area for a good burn? Its been 100+ the last 2 weeks here in Texas. I feel pretty comfortable running 200 temp. Any thoughts? Anybody else running 200+-?

[cumminator]

see it wouldnt be that bad if the temps were 100+, but it was like 71. i dunno maybe the truck is just a totally different breed than my 03

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2006 2500 auto, tranny-everything but the shafts, Banks Intercooler, CAI, Ram Air, and Dual Exhaust, Smarty TNT, EZ, HTT 64/71, Performax Gauges, AD 150, Arson 3, Flux 2.0s
For Sale: HTT SuperDave(s480), Source Automotive Twin Piping
"Thanks to Chuck @ New Era Diesel"

[NickBeek]

My '06 has been doing that since brand new! From cold it will go above 200 about 1-2 needle widths and then settle back down once the thermostat opens up. It usually runs right around 200 plus or minus 2 needle widths. I now have 103K miles on it. This weekend I flushed and refilled my coolant system and the coolant came out virgin clean after 103K miles. No oil, no scale, no dirt, just clean coolant.

Some things that I have learned over the years.....Use the manufacturers suggested thermostat rating, don't second guess them. Use good quality specified coolant at the proper mix rate with distilled water, keep the radiator fins clean, and drive it and smile. BTW, I have read a LOT of threads that say not to use any other thermostat then the one supplied by Cummins. After market versions seem to have issues in our engines. Oh and here is a little trick if you are gonna flush your cooling system. When I went to refill the system it did not want to take more than 1.5 gallons. I removed the heater core hose where it comes out of the head and the venting allowed me to put 5 gallons back in, which is what came out when I drain it the first time.

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2006 Dodge, 2500, CTD, 4x4, 6 Speed, SLT, Thunder Road Package, Mineral Grey, MBRP Muffler Replacement Kit, Fast Idle Enabled.

[jfranklin]

this is normal for a third gen, 2nd gens run a bit cooler. the 600 series run right at 200 it is for a cleaner burn.

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04.5 quadcab 4x4 - mostly stock

[upinsmoke01]

I have a password to get on Cummins quick serve and to test the coolant sensor it says at 203degrees the sensor should have 700 to 800ohms of resistance if you think it your gauge may off