cab heaters

[jarheadf350]

im not sure because its my first cab / block heater , but it doesnt seem to do sh*t.. and my fan seems to run alot. i can idle for more then 45 seconds and my idle kicks up and fan runs. is this normal

[yukondiesel]

Originally Posted by jarheadf350

im not sure because its my first cab / block heater , but it doesnt seem to do sh*t.. and my fan seems to run alot. i can idle for more then 45 seconds and my idle kicks up and fan runs. is this normal

Cab heater? Block Heater? Which is it? Do you have the "Rapid heat" option? I presume you mean the engine cooling fan as oppsoed to the cab heater fan?


If its the cooling fan, my truck does the same thing30-45 seconds of idling and th idle kicks up with the fan, even though the engine is cold. I think this high idle is a feature to protect the turbo or the EGR from "coking up" from the cold exhaust.

[jarheadf350]

im sorry , maybe i dont even know what i have ..lol. my window sticker says supliment cab heater / and on another line it says i have a block heater.. i have plugged her in she seems to start faster but still no cab heat right away .. and what is a supliment cab heater ???? also yes my engine cooling fan cycles like crazy warm or cold .. defrost on or off it doesnt seem to matter.. just wondering if it was normal?? its my first diesel ....thanks for the info

[ZeroOne]

The "block heater" is what you're plugging in, and warms the engine coolant. Helps with cold starts but does not preheat the truck to any temperature that would be considered "warm" when trying to use the heat. Turns a winter day's start into a 60F degree day start, if that makes any sense.

The supplemental cab heat is an electric element in the heating system (the air blowing out of your vents when you turn the heat on). It is not as obvious as you'd think it would be. When the truck is cold, it's barely noticeable. In my opinion, it just allows you to have heat before the truck is up to temp... but it does not seem to compensate for the first 5min when the engine coolant is overnight-cold.

[jarheadf350]

thanks thats what i was thinking / read in the manual... but thanks for informing me better... i would have to say its fine , with the info u just gave me.. i was expecting warm air at start up, because of these features but its seems to me it just wont happen.. thanks again