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Old 02-06-2009, 07:27 AM   eBay Motors  #1 (permalink)
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poor cab heat

My duramax doesn't seem to heat that well even with a cold winter front installed. It looks like everyone I see must be having the same issue as they all have winter fronts. Is there a magic bullet to solve this?
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Old 02-06-2009, 07:31 AM   eBay Motors  #2 (permalink)
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floor it! i know it sounds childish but sometimes you got to make it want to make heat. whats your temp gauage say? it was 8* here this am and after a 15min warm up my gauge barely moved off the stop, once you put a lil heat in her shes fine, untill you park it to get b-fast then its cold again. the cooling system is so massaive that all it takes is a few min at idle to bring the temp back down then the t-stat closes and there is not as much hot water going through the heater core.
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Old 02-06-2009, 07:32 AM   eBay Motors  #3 (permalink)
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welcome to the DF..fill out your signature of what year truck you have and any modifications you have done

How cold is it where you live?
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Old 02-06-2009, 07:45 AM   eBay Motors  #4 (permalink)
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I'm in Wisconsin. Not uncommon to be zero or below, but that really isn't the issue. I have an edge monitor in the cab and the engine is running about 190, so it should be heating better. I have had 4 powerstrokes and never had an issue even without a winter front. I kind of had just wrote it off to the aluminum block and the issues it can create, but have heard from others in this area with the same complaints and thought there should be an answer.
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Old 02-06-2009, 07:49 AM   eBay Motors  #5 (permalink)
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if its an LB7 you got to ge a high idle kit. the Dmax is the wort heat building machine at idle out there. cold in winter. high indle my pick will sit aroung 185 temp at idle, with out it it baily made it above 160
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Old 02-06-2009, 07:51 AM   eBay Motors  #6 (permalink)
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Quote:
Originally Posted by shade tree mechanic View Post
I'm in Wisconsin. Not uncommon to be zero or below, but that really isn't the issue. I have an edge monitor in the cab and the engine is running about 190, so it should be heating better. I have had 4 powerstrokes and never had an issue even without a winter front. I kind of had just wrote it off to the aluminum block and the issues it can create, but have heard from others in this area with the same complaints and thought there should be an answer.
If you are at 190 you should have no problem with lots of heat. Sounds like your heater core is plugged up. I'd get the cooling system flushed out real good.
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Old 02-06-2009, 12:33 PM   eBay Motors  #7 (permalink)
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ya if your at 190 its the heater core.
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Tires & Wheels 285/75/R16 Load Range E BFG A/T's on Stock Rims
Suspension Cognito UCA kit with Bilsteins all around from Nick at Nor-Cal Truck
Drivetrain LMM Duramax, Allsion 1000 Transmssion
Performance Mods EFI Live and DSP 5 By MMLMM, RBP downpipe back exhaust (no CAT or DPF), TransGo Jr, Mag Hytec transmssion and rear end covers, PPE Air Box Mod, Resonator Blocked, Auto Meter GS Boost, EGT, and Transmission gauges, Auto Meter triple pillar with speaker cutout. all from Tyler at Meyer Performance & Fabrication, LLC
Other Mods B&W Turn Over Ball, Air Lift Bags, Titan 52gal fuel tank, Wether Tech FloorLiners, SpeedLiner spray in bedliner, debadged whole truck except bow ties and D-Max/Allsion logo
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Old 02-06-2009, 12:40 PM   eBay Motors  #8 (permalink)
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duramaxes are not aluminum blocks they are cast. The heads are aluminum.

If your temps are ay 190* you should get it checked out, at that temp with the heater cranked youll see me driving around with my windows down like a flaming idiot. Usually on my way to school in madison, its chilly at first but by the time i get there im sweating.
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Old 02-06-2009, 01:09 PM   eBay Motors  #9 (permalink)
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plugged heater core
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