heater problemal
#1
heater problem
alright everyone, my heater in my truck isnt really working. once it gets to operating temp (180-190*F) the heater blows barely even warm at all. my wifes tahoe runs at 190 and her heater blows us out of the car.
ever since i did the cummins conversion its been like this. i dont see why the motor would matter as long as the water temp through the heater core is hot. and i bought the truck with no engine so i cant tell you if it did it before this engine.
i have a brand new heater core. heater core gets really hot to the touch when at operating temp, thermostat is working well, it just doesnt blow all that well. it blows hard just not hot.
its a 1995 year so i dont think it needs one of those vacuum line operating valves. i have had the dash out and back in i dont know if something got knocked loose, but ive replaced probably 100 of these dashes (literally) and never had a problem. and i am sure the **** is functioning correctly because when i put it on cold it blows COLD.
any ideas? thanks
ever since i did the cummins conversion its been like this. i dont see why the motor would matter as long as the water temp through the heater core is hot. and i bought the truck with no engine so i cant tell you if it did it before this engine.
i have a brand new heater core. heater core gets really hot to the touch when at operating temp, thermostat is working well, it just doesnt blow all that well. it blows hard just not hot.
its a 1995 year so i dont think it needs one of those vacuum line operating valves. i have had the dash out and back in i dont know if something got knocked loose, but ive replaced probably 100 of these dashes (literally) and never had a problem. and i am sure the **** is functioning correctly because when i put it on cold it blows COLD.
any ideas? thanks
Last edited by tltruckparts; 03-18-2010 at 12:56 AM.
#2
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#6
#7
ill have the dash out in a couple weeks when it gets back from the body shop. the airflow seems like its good, i mean when it blows it blows hard it definitely doesnt lack airflow. it just lacks heat. is there a valve or something i can manually turn to see if its not letting it go all the way hot and maybe stopping at like 50% heat/50% cold
#9
here is a good thread to look at. isnt it wierd this guy has a similar problem at the same time as you with the same year of truck!
Heater Flapper - The Truck Stop
Heater Flapper - The Truck Stop
Last edited by Woody35; 03-18-2010 at 10:45 PM.