overheating - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 6 (permalink) Old 02-09-2010, 02:53 AM Thread Starter
 
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overheating

Hi all, Im new here and am looking for help to stop my 03 dully from getting hot! I tow heavy and when pulling steep hills she starts creeping up and ofcourse i downshift and do all i can to keep it as cool as posible.
My Question is would mounting a seperate electric cooling fan help? and any advise would be of great help!
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post #2 of 6 (permalink) Old 02-10-2010, 01:00 AM
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the engine is getting hot? Im not sure if you could mount a separate fan anywhere, a Cold air intake, better exhaust, Water injection could be a few places to start.. hard to say, put some info in your Signature so we know what you have done to the truck to begin with, thanks

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post #3 of 6 (permalink) Old 02-10-2010, 04:27 AM
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I've pulled quite a bit of weight with my Silverado and never had an overheat problem. Is it actually overheating? Or just getting hot? The LB7 has a huge cooling system, so I would lean towards a component problem VS. needing another fan.

Hows the cooling systems condition? Fan clutch working? Coolant flushed recently? Radiator not blocked by leaves or trash?

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post #4 of 6 (permalink) Old 02-10-2010, 03:08 PM
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Originally Posted by rverrcer View Post
Hi all, Im new here and am looking for help to stop my 03 dully from getting hot! I tow heavy and when pulling steep hills she starts creeping up and ofcourse i downshift and do all i can to keep it as cool as posible.
My Question is would mounting a seperate electric cooling fan help? and any advise would be of great help!
You going by pyro or engine temp gauge in the truck cluster? could be a thermostat..

Nate

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post #5 of 6 (permalink) Old 02-15-2010, 03:57 PM
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i have had a 97 r3500 cummings and currently have a 2000 r3500 cummings not impressed with either one both are completely stock and when pulling a heavy load say 15000 lbs up a hill they have plenty of power but you cant use it because you have to drive by the temp gauge. i have to drop down to about 40 mph tokeep the temp gauge from climbing to the top the have never over heated but get to close for comfort.i also have a 2003 f650 with a 5.9 cummings it ways 15600 empty i can put a 4door 4wd dually on top and a 32 foot trailer behind it and you cant make it get hot .sure would like to know whats with the other 2 trucks other than the ford has a huge radiator
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post #6 of 6 (permalink) Old 02-15-2010, 04:24 PM
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the larger radiator would probably be the reason, the more cooling capacity the better the cooling, engine heat it derived from combustion heat, intake heat, egts, its a vicious cycle, the hotter the engine gets, the higher underhood temps get, the higher underhood temps get the hotter intake temps get, the hotter intake temps get the hotter the air entering the turbo gets, and hot air being compressed into the engine only gets hotter with combustion, which exhausts into the turbo creating high turbo and EGT's which also feed higher underhood temps.... it spirals out of control, the best thing to do is open the exhaust, open the intake, and make sure your coolant system is in good working order, engine fan clutch, water pump, thermostats, even your radiator, make sure that its not full of gunk, i would even flush the cooling system, and start with fresh coolant, because coolant does break down over time

Aaron the Crazy Canuck
2006 Chevrolet Silverado LT 2500: LBZ - Allison, Greystone Metallic, 4x4,PPE airbox mod, missing muffler/cat, EFILive tuned by Nick at duramaxtuner, MA tie-rod sleeves and Grade C headgaskets
Totalled!! May 2nd 2008-2005 Dodge Ram 3500 laramie: Cummins auto, plain white, rebuilt tranny
1986 Mercury Capri - 5.0L, AOD, shorty headers, acell ignition, Holly street dominator intake, Holly 625 vacuum secondaries carb, Dual glass packs "my little yellow terror"

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