heater questions

500hp2500 · 11-01-2009, 09:12 PM

well i turned the heat on in my truck this afternoon and the air coming out of the vents was not warm at all. the truck had been going down the interstate for at least an hour when i turned it on. i dont know what would make it do that unless the thermostat is not opening but the engine is not overheating. thank you for your help in advance

__________________

96 12vlv 4x4, 370 hp injectiors, industrail injection pump, 5in straight exhaust, coustom built tranny, hx 40, ats 3 piece exhaust manifold, coustom intake, spearco intercoller, o-ringed & studded, bhaf, i think that is all.

ykdave · 11-01-2009, 09:22 PM

Is the temperature gauge moving (is the engine actually warming up?)

If it is, you likely have a block in the heater core or the valve that controls coolant flow to the heater core is stuck closed (if these trucks have one)

__________________
97 Ram 2500 / 5.9ctd /NV4500/241DHD
Custom Intake Tube+ BHAF, Pump Tuning, Autometer Pyro and Boost gauges, Dual 4" stacks, 33x12.5 Mud terrains, posi-lok, One Hella sound system, tons more to come

500hp2500 · 11-01-2009, 10:49 PM

yea it moves the air is luke warm but i remember the cummins my dad had before he got killed it would run you out of the truck when you turned the heat on. one question while i was on the throne thinkin while ago if the truck did not have a thermostat in it that it would not warm up enough to get hot enough to make the heat work

__________________

96 12vlv 4x4, 370 hp injectiors, industrail injection pump, 5in straight exhaust, coustom built tranny, hx 40, ats 3 piece exhaust manifold, coustom intake, spearco intercoller, o-ringed & studded, bhaf, i think that is all.

500hp2500 · 11-04-2009, 01:22 PM

bump it up

__________________

96 12vlv 4x4, 370 hp injectiors, industrail injection pump, 5in straight exhaust, coustom built tranny, hx 40, ats 3 piece exhaust manifold, coustom intake, spearco intercoller, o-ringed & studded, bhaf, i think that is all.

calebmcclellan · 11-04-2009, 02:30 PM

low on coolant = no heater

__________________
86 C/20 w/94 12v 420k miles http://www.cumminsforum.com/forum/cu...chevy-2wd.html
92 W250 just got it

500hp2500 · 11-04-2009, 04:47 PM

she is filled up to the brim

__________________

96 12vlv 4x4, 370 hp injectiors, industrail injection pump, 5in straight exhaust, coustom built tranny, hx 40, ats 3 piece exhaust manifold, coustom intake, spearco intercoller, o-ringed & studded, bhaf, i think that is all.

H.R.D · 11-04-2009, 04:51 PM

My dad had a similar problem probally have a blocked core....you can try a flush and see if that works if not you will prob need to change core out...which is a huge pain in the arse!

__________________
2002 3/4 ton

X-cab SWB 4x4 5 speed, Volant CAI, Blue Chip VP44, Edge J/A*HOT*, PDR HX40, AD 100, CFM+, BD short shift, TRAIN HORNS, 4" 2 6" Black Mitre's!!! www.hotroddieselclub.com its the myspace for diesels!!!

coreisntlife · 11-04-2009, 10:17 PM

I have the same problem. I'm pretty sure the thermostat is the thing with a spring sitting in the passenger door. I bought it that way with it just sitting there. How hard is it to reinstall? The gauge never moves at all. And I get mediocre heat at best.

__________________
1994 2wd-415000-some tranny, still unsure of it's mods-ebay hx40-basic pump turn ups-2inch leveling kit-ghetto ricer intake-tc lockup switch-autometer ultra lites

Last edited by coreisntlife : 11-05-2009 at 09:06 AM.

BillyGoat2001 · 11-05-2009, 10:35 PM

It could be your actuator, the knob that adjusts your air temperature(the red n blue adjuster). After the truck is warm pop your hood and feel the black lines going into the fire wall on the passanger side, one should be warm. If its not it could be your heater core. If it is, you may need to replace your actuator. Thats what hapened to mine, I just open it and close it manually because its a pain in the butt to replace.

11-01-2009, 09:12 PM	#1 (permalink)
500hp2500 Cummins Fanatic Join Date: Aug 2009 Location: aquadale (akwa dale) nc Posts: 166 Thanks: 3 Thanked 3 Times in 3 Posts 500hp2500's Truck Pics	heater questions well i turned the heat on in my truck this afternoon and the air coming out of the vents was not warm at all. the truck had been going down the interstate for at least an hour when i turned it on. i dont know what would make it do that unless the thermostat is not opening but the engine is not overheating. thank you for your help in advance __________________ 96 12vlv 4x4, 370 hp injectiors, industrail injection pump, 5in straight exhaust, coustom built tranny, hx 40, ats 3 piece exhaust manifold, coustom intake, spearco intercoller, o-ringed & studded, bhaf, i think that is all.

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11-01-2009, 09:22 PM	#2 (permalink)
ykdave Diesel Head Join Date: Feb 2008 Location: Yellowknife, NT, Canada Posts: 3,853 Thanks: 0 Thanked 76 Times in 62 Posts ykdave's Truck Pics	Is the temperature gauge moving (is the engine actually warming up?) If it is, you likely have a block in the heater core or the valve that controls coolant flow to the heater core is stuck closed (if these trucks have one) __________________ 97 Ram 2500 / 5.9ctd /NV4500/241DHD Custom Intake Tube+ BHAF, Pump Tuning, Autometer Pyro and Boost gauges, Dual 4" stacks, 33x12.5 Mud terrains, posi-lok, One Hella sound system, tons more to come

11-01-2009, 10:49 PM	#3 (permalink)
500hp2500 Cummins Fanatic Join Date: Aug 2009 Location: aquadale (akwa dale) nc Posts: 166 Thanks: 3 Thanked 3 Times in 3 Posts 500hp2500's Truck Pics	yea it moves the air is luke warm but i remember the cummins my dad had before he got killed it would run you out of the truck when you turned the heat on. one question while i was on the throne thinkin while ago if the truck did not have a thermostat in it that it would not warm up enough to get hot enough to make the heat work __________________ 96 12vlv 4x4, 370 hp injectiors, industrail injection pump, 5in straight exhaust, coustom built tranny, hx 40, ats 3 piece exhaust manifold, coustom intake, spearco intercoller, o-ringed & studded, bhaf, i think that is all.

11-04-2009, 01:22 PM	#4 (permalink)
500hp2500 Cummins Fanatic Join Date: Aug 2009 Location: aquadale (akwa dale) nc Posts: 166 Thanks: 3 Thanked 3 Times in 3 Posts 500hp2500's Truck Pics	bump it up __________________ 96 12vlv 4x4, 370 hp injectiors, industrail injection pump, 5in straight exhaust, coustom built tranny, hx 40, ats 3 piece exhaust manifold, coustom intake, spearco intercoller, o-ringed & studded, bhaf, i think that is all.

11-04-2009, 02:30 PM	#5 (permalink)
calebmcclellan Cummins Nut Join Date: Nov 2008 Location: kc,mo Posts: 432 Thanks: 1 Thanked 31 Times in 30 Posts calebmcclellan's Truck Pics	low on coolant = no heater __________________ 86 C/20 w/94 12v 420k miles http://www.cumminsforum.com/forum/cu...chevy-2wd.html 92 W250 just got it

11-04-2009, 04:47 PM	#6 (permalink)
500hp2500 Cummins Fanatic Join Date: Aug 2009 Location: aquadale (akwa dale) nc Posts: 166 Thanks: 3 Thanked 3 Times in 3 Posts 500hp2500's Truck Pics	she is filled up to the brim __________________ 96 12vlv 4x4, 370 hp injectiors, industrail injection pump, 5in straight exhaust, coustom built tranny, hx 40, ats 3 piece exhaust manifold, coustom intake, spearco intercoller, o-ringed & studded, bhaf, i think that is all.

11-04-2009, 04:51 PM	#7 (permalink)
H.R.D Diesel Freak Join Date: Jul 2008 Location: Las Cruces New Mexico Posts: 921 Thanks: 11 Thanked 32 Times in 29 Posts H.R.D's Truck Pics	My dad had a similar problem probally have a blocked core....you can try a flush and see if that works if not you will prob need to change core out...which is a huge pain in the arse! __________________ 2002 3/4 ton X-cab SWB 4x4 5 speed, Volant CAI, Blue Chip VP44, Edge J/AHOT, PDR HX40, AD 100, CFM+, BD short shift, TRAIN HORNS, 4" 2 6" Black Mitre's!!! www.hotroddieselclub.com its the myspace for diesels!!!

11-04-2009, 10:17 PM	#8 (permalink)
coreisntlife Cummins Fan Join Date: Aug 2009 Posts: 79 Thanks: 0 Thanked 2 Times in 2 Posts coreisntlife's Truck Pics	I have the same problem. I'm pretty sure the thermostat is the thing with a spring sitting in the passenger door. I bought it that way with it just sitting there. How hard is it to reinstall? The gauge never moves at all. And I get mediocre heat at best. __________________ 1994 2wd-415000-some tranny, still unsure of it's mods-ebay hx40-basic pump turn ups-2inch leveling kit-ghetto ricer intake-tc lockup switch-autometer ultra lites Last edited by coreisntlife : 11-05-2009 at 09:06 AM.

11-05-2009, 10:35 PM	#9 (permalink)
BillyGoat2001 Newbie Join Date: Oct 2009 Posts: 21 Thanks: 0 Thanked 0 Times in 0 Posts BillyGoat2001's Truck Pics	It could be your actuator, the knob that adjusts your air temperature(the red n blue adjuster). After the truck is warm pop your hood and feel the black lines going into the fire wall on the passanger side, one should be warm. If its not it could be your heater core. If it is, you may need to replace your actuator. Thats what hapened to mine, I just open it and close it manually because its a pain in the butt to replace.