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Old 01-19-2007, 01:15 AM   #1
chuckywang
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Default No heat while engine is cold.

My car is a 2002 WRX Wagon.

I always have my heat on external circulation (you know that knob in your car you turn to select circulation from the inside vs. the outside). However, my car only heats up when the engine runs and becomes warm. This is all fine and well for the most part.

As a test, I turned the knob for internal circulation and set the temperature to the highest possible setting. I did this while idle with the engine cold. There was no heat. Any ideas on what the problem might be?

(Sorry, I'm a newb and don't know exact terminology.)
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Old 01-19-2007, 01:53 AM   #2
Uncle Scotty
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....if this is a joke....what is the punchline


...if this is NOT a joke......O M F G
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Old 01-19-2007, 01:59 AM   #3
06grayrex
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This is because 1- the air in the cabin is still cold so your just recirculating cold air. 2- The engine coolant is pump through the heater core and when the coolant is warm and air blows though the heater core, is when you get warm air. Now while the car is warming, you want turn to recirculate cabin air because you will be taking slightly warmer air (from the cabin) compared to outside the outside air temp back through the heater core and the cabin air will be heated faster. Once you are moving say down the highway you can switch to fresh air and turn off the fan and the air from outside will be forced through the heater core w/o any extra electrical load on the alternator. Hope this helps. If this is a Joke then God help you.
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Old 01-19-2007, 02:07 AM   #4
06grayrex
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By chance do you think that cars have an electric heater???????? DO you know anything about heating and cooling? God I hope this isn't a joke.
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Old 01-19-2007, 02:42 AM   #5
Sushiplate
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[quote][By chance do you think that cars have an electric heater???????? DO you know anything about heating and cooling? God I hope this isn't a joke./QUOTE]

I could almost understand this not being a joke. I didn't know that the heat came from the engine until I was about 13 and watched a History channel special on the history of Cadillac. (God, I can't belive I remeber that and not how to divide fractions)
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Old 01-19-2007, 03:24 AM   #6
chuckywang
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*goes into a corner and hides*

Ok, I had no idea how it worked.
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Old 01-19-2007, 03:39 AM   #7
06grayrex
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I appologize if I sounded sarcastic but I know there are some people that post things of this nature just to get a rise out people and screw with them. Sorry......If you have any other questions just ask.

Last edited by 06grayrex; 01-19-2007 at 04:18 AM.
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Old 01-19-2007, 09:01 AM   #8
orndog
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Ok ok...

My student worker, who was 18 at the time, didn't know how to release a set of vise grips. True story. Maybe that will make you feel a bit better....
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Old 01-19-2007, 09:05 AM   #9
Jakes02
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^^duh, keep squeezing the handles together, lol
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Old 01-19-2007, 09:10 AM   #10
rkramer
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some cars ARE coming with electrical heating systems now! (nothing suby makes, yet, at least...)

hybrid... no running engine=no heat, so early hybrids had to run the engine constantly for heat. some newer ones have electrical systems to at least supplement the heating.
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Old 01-19-2007, 09:56 AM   #11
littlewhitewagon
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Quote:
Originally Posted by Jakes02 View Post
^^duh, keep squeezing the handles together, lol
you're kidding right? there is a small release handle on the inside of the pliers...
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Old 01-19-2007, 10:41 AM   #12
leecea
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Quote:
there is a small release handle on the inside of the pliers
Actually, not on mine. You just pull the handles apart.
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Old 01-19-2007, 04:54 PM   #13
crampfan
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Quote:
Originally Posted by Uncle Scotty View Post
....if this is a joke....what is the punchline


...if this is NOT a joke......O M F G
um......
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Old 01-19-2007, 05:00 PM   #14
norexyet
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Quote:
Originally Posted by littlewhitewagon View Post
you're kidding right? there is a small release handle on the inside of the pliers...
that one went right over your head.
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Old 01-19-2007, 06:15 PM   #15
JTJ 2.5
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Wow, thanks for the laugh.
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Old 01-19-2007, 11:39 PM   #16
Feign
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Quote:
Originally Posted by rkramer View Post
some cars ARE coming with electrical heating systems now! (nothing suby makes, yet, at least...)

hybrid... no running engine=no heat, so early hybrids had to run the engine constantly for heat. some newer ones have electrical systems to at least supplement the heating.
My buddy's Prius does that. Insta-heat!
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Old 01-19-2007, 11:56 PM   #17
George71
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The drawback of electrical heating systems is that it's a much less efficent way to heat the cabin. I suppose the cars that do have them only use them for a short time until the coolant temperature is hot enough.
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