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  #1  
Old 01-14-13, 06:04 PM
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Real stupid question

Cold outside and been bugging me for a while, with heater running.

How come, every time I turn sharp left, I get whiff of very hot air out the vents, and turning right - whiff of lukewarm? And same goes for all cars we own, as in - Toyota, Lexus, and Chevy.

Ideas? Got me real curious.
 
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  #2  
Old 01-14-13, 07:11 PM
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Perhaps it could be the fresh air intake and where it is located or orientated on your car.
As you turn one way it could be just increasing the angle of attack and simply forcing more
air in through the system....which then gets heated per normal.

One way to test this would be to select "recirculate" on the climate control.....it may be an oval arrow symbol. Then go do a test drive and see if the source of the "whiff" was indeed coming from outside.


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Old 01-15-13, 03:33 AM
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Igor, I mentioned in another post, that happens in my Ram 3500 Cummins. But mine had to do with coolant level being low and apparently when I made a certain turn the water was evacuated from the heater core for a second or two causing cool or lukewarm air to emerge. Is yours the "temperature" or the force of air increasing/decreasing?
 
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Old 01-15-13, 05:31 PM
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Temperature. It's getting hotter to the left, and colder to the right.
But same is for all 3 cars we own, and they are different make, and I do not allow coolant levels fall low. Not in my stable.
Bizarre.
 
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Old 01-15-13, 05:33 PM
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I actually thought, that it has something to do with inertia and the way air blows due to sharp turn. I have side vents set to blow on the windows.
Maybe I'll set then straight and see what happens. Just don't like air blowing in my face and even arms, as I drive short sleeved always.
 
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Old 01-15-13, 06:03 PM
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Unless you are doing a 9G pull, I doubt you are outrunning the air in the ducts Could be the blood rushing from one side of your body giving a cooler feeling. Just kidding, you know that!!

Keep us posted on your findings.
 
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Old 01-15-13, 06:58 PM
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this might be the worst guess in the would but maybe you have leaves/rodent nest in your heater box. and its moving around in curves.changing air flow directions making the air is hit less traveled slots in the heater core making it hotter/cooler.
 
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Old 01-15-13, 07:41 PM
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It's weird, isn't it? What kills me, as I rotate Silverado and Camry daily, they have same habit. Truck is more pronounced.
I'll move vents away from windows tomorrow morning.
iceman, it's not just one car.
Ha-ha, 9G would have been something in Silverado.
 
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Old 01-15-13, 08:27 PM
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i know its not just one car, but all sit in same area right?
 
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Old 01-16-13, 05:10 AM
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Maybe you are taking the right hand turns so fast that your wife is sliding
over to your side.....giving you that lukewarm feeling......lol.....


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Old 01-16-13, 06:36 AM
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I have noticed this when running the AC. As someone mentioned above, "inertia". I'm sure it's just the stream of air staying in the same place while you are moving to left or right.
 
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Old 01-16-13, 08:25 AM
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Got it figured. Very simple reason but cause is unknown.
Not sure why both GM and Toyota products do this, but I always believed that they have been in same bed for long time, so some ideas might have been "borrowed".

OK, so everyone has 3 guesses.

No, it's not where I sit or where vents are directed. Both vehicles have coolant levels fine and no known mechanical issues.
 
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Old 01-16-13, 09:12 AM
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1. Weak springs on the blend doors.
2. Because we buy cheap foreign parts from unknown sources.
3. Because the inertial drag coeficient is less than the force of air being supplied, causing an imbalance in the vortex produced in the inadequate ducting system.
 
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Old 01-16-13, 12:42 PM
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ha ha ha

for some unknown cause, blower rpm-s increase when I do sharp Left turn and de-crease, when doing right. Resulting in more heat or less heat.

Yours might be doing same, except that you drive in jackets and long sleeves, and I am always short sleeved, so I feel it.
 
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Old 01-16-13, 01:14 PM
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Did you try it with the system set on "recirculate" ???


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Old 01-16-13, 01:45 PM
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Igor, I'm in short sleeves until 32 degrees, then long sleeves. Coat at about 25. My guys are all bundled up like a blizzard hit or something. Now, wet and cold is different.
 
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Old 01-16-13, 01:51 PM
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Always told that recirculate is prohibitive and should be used only as a last measure. Why would I?

But after I figured it and started paying attention, it's pretty obvious. Sharp right turn, like a 90 deg turn - blower blows more air=more heat incoming. Opposite during right hand turn.
Kinda feels like someone popped furnace door open for a moment...
 
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Old 01-16-13, 01:52 PM
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OK, chandler, you in long sleeves then. It's in 20s here.
 
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Old 01-16-13, 02:00 PM
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One thing with recirculating air I have a problem with is if you have the heat on, and have been driving a while, you can become lethargic due to same stale air being swirled in the cabin. Open a window and you'll wake up in a hurry, especially if it's 20 outside!!
 
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Old 01-16-13, 02:19 PM
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Always told that recirculate is prohibitive and should be used only as a last measure. Why would I?

I never suggested to leave it on recirculate. You asked why is this happening.....and have no explanation. My idea was simply to answer the question and solve the mystery as to your statement of "for some unknown cause, blower rpm-s increase"


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  #21  
Old 01-16-13, 03:43 PM
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Oh, no, no, recirc is valid suggestion.

I simply never drive with it on.

chandler, I am like guys from South Park - I enjoy my toxins. THAT will never put me lethargic.:NO NO NO:
 
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