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Heating Question

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by MudFrog, Dec 13, 2000.

  1. MudFrog

    MudFrog 1/2 ton status

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    Well my Heat works awesome, It's Nice and Hot. The question is it takes about 10 minutes to kick in, I know the engine has to warm up, but is there anything I can do to get the heat working quicker, by the time it kicks in I'm over half way home from work. And I'm not gonna start my engine earlier, too many people I don't trust hanging around my work.

    89 K5 Silverado
    http://mudfrog.coloradok5.com
     
  2. Emmettology 101

    Emmettology 101 3/4 ton status

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    You could try a trick that the truckers use by covering part of your radiator with something to restrict airflow through it.

    Mike [​IMG]
    See <font color=green>EMMETT</font color=green> -&gt; http://emmett.coloradok5.com
     
  3. HarryH3

    HarryH3 1 ton status Author

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    Yep. Cover that radiator. You'll be amazed at the difference it makes. I just cover it with a large piece of cardboard. Leave a 6-8 inch hole in the center so the fan isn't sucking against a vacuum. I've never had overheating problems with this setup and the heat comes on WAY faster without all that cold air blasting through the radiator and across the engine.

    <font color=black>HarryH3 - '75 K5</font color=black>
    http://ThunderTruck.ColoradoK5.com
     
  4. Zepplin

    Zepplin 1/2 ton status

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    I am having similiar problems with my heat. I have brand new heater hoses, heater core, thermostat (195) and a two year old 3 core radiator. It takes forever to heat up. The blower works good also. I also have a piece of cardboard in front of the radiator. I even have it run for 15 minutes every morning. Is there a way to route the entrance to where the air is pulled in by the blower motor to get it near the engine. So, that it is already getting semi-warm air before it blows over the heater core. I can't seem to think of any more ideas. I changed the thermostat twice to eliminate that also.

    Communication Breakdown
    74 Blazer
    Zeppelin
     
  5. HarryH3

    HarryH3 1 ton status Author

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    Zepplin, with a rig as old as yours, I'd bet that the foam seals around the edge of the temp control door are worn out. That would let lots of cold air get mixed in with the heated air. [​IMG]

    Look under the right side of the dash while moving the temp control lever back and forth, to find the part that's moving under there. Then you'll need to take apart the plenum to take a look at what should be happening in there. I'll bet you'll find the door isn't closing tightly enough. Put a new foam seal on there and you should get warmer air in the cab.

    <font color=black>HarryH3 - '75 K5</font color=black>
    http://ThunderTruck.ColoradoK5.com
     
  6. Cmoe

    Cmoe 1/2 ton status

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    If your running an electric fan make sure it isn't turning on to early. Also some people run a heated blanket over the radiator to keep it warm longer

    C'moe

    <font color=black>the blazer is "Back in Black"
     

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