heat getting into car

sd88supra · 10-24-2006, 06:10 PM

when i drive fast (as on the highway), i feel heat coming in from the air vents even if theyre closed. Seems like either my heater is always on or heat from the engine is getting through the firewall. But, my guess is that the main problem is the heater (feels like heat from a heater, smells like it too). I think im gonna get another A/C control unit (some of the functions dont work anyway), but is there anything else I should look out for? I mean I only feel the heat when I drive fast, as the A/C control unit works independently of the movement of the car, so how are these related?

h8z2luze · 10-25-2006, 02:34 AM

I did the same thing then I realized even when the fan is all the way off the temp is still the same of the air comming through the vents so before you turn your fan off turn the temp down and it should be cooler.

burton51m · 10-25-2006, 03:06 AM

mine does it too

it can get annoying when its hot out

sd88supra · 10-27-2006, 10:46 PM

its still hot in san diego so its still annoying. hell i dont even use a heater when im somewhere real cold. anyone know how to fix this?

ZauggIt1 · 10-28-2006, 11:15 PM

Quote:

Originally Posted by h8z2luze

I did the same thing then I realized even when the fan is all the way off the temp is still the same of the air comming through the vents so before you turn your fan off turn the temp down and it should be cooler.

Hes very right, Your heater pulls fresh air from outside, so when you drive fast, the air is forced through everything, then through the heater core and out comes hot air, just like LUZE said, turn the temp down before you turn off the fan, it will close the heater control valve and not let hot coolant into the heater core. that should fix your problem!!!

twurbo.oggy · 10-28-2006, 11:30 PM

+1

and i dont think it has anything to do with your a/c unit

sd88supra · 10-30-2006, 06:08 PM

well that seems to have fixed the hot air problem, but the air problem remains. where does the incoming air leak from? I can feel it through the vents but I cant see where it flows in through the firewall.

sd88supra · 11-03-2006, 12:47 AM

that seems to be working only sometimes. ill turn the temp down before turning the fan off but sometimes the air still comes in hot. of course that has to do with the air outside (which is still pretty damn hot here), but it will come in hotter than the outside temp. my a/c unit has a bunch of issues so im gonna change it anyway. until then ill have to keep riding with my windows down

10-24-2006, 06:10 PM	#1
sd88supra 3" Exhaust Join Date: Oct 2005 Location: San Diego, Ca Posts: 190	heat getting into car when i drive fast (as on the highway), i feel heat coming in from the air vents even if theyre closed. Seems like either my heater is always on or heat from the engine is getting through the firewall. But, my guess is that the main problem is the heater (feels like heat from a heater, smells like it too). I think im gonna get another A/C control unit (some of the functions dont work anyway), but is there anything else I should look out for? I mean I only feel the heat when I drive fast, as the A/C control unit works independently of the movement of the car, so how are these related?

10-25-2006, 02:34 AM	#2
h8z2luze 12psi boost Join Date: May 2006 Location: Nor*Cal Posts: 338	I did the same thing then I realized even when the fan is all the way off the temp is still the same of the air comming through the vents so before you turn your fan off turn the temp down and it should be cooler. __________________ 1989 Supra 7MGE MK3 5-speed project... http://www.cardomain.com/ride/2385505

10-25-2006, 03:06 AM	#3
burton51m Lexus & 550's Join Date: Feb 2006 Location: Canton, OH Posts: 536	mine does it too it can get annoying when its hot out __________________

11-03-2006, 12:47 AM	#8
sd88supra 3" Exhaust Join Date: Oct 2005 Location: San Diego, Ca Posts: 190	maybe not that seems to be working only sometimes. ill turn the temp down before turning the fan off but sometimes the air still comes in hot. of course that has to do with the air outside (which is still pretty damn hot here), but it will come in hotter than the outside temp. my a/c unit has a bunch of issues so im gonna change it anyway. until then ill have to keep riding with my windows down

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10-27-2006, 10:46 PM	#4
sd88supra 3" Exhaust Join Date: Oct 2005 Location: San Diego, Ca Posts: 190	its still hot in san diego so its still annoying. hell i dont even use a heater when im somewhere real cold. anyone know how to fix this?

10-28-2006, 11:30 PM	#6
twurbo.oggy Intake Join Date: Apr 2006 Location: santa barbara Posts: 42	+1 and i dont think it has anything to do with your a/c unit

10-30-2006, 06:08 PM	#7
sd88supra 3" Exhaust Join Date: Oct 2005 Location: San Diego, Ca Posts: 190	well that seems to have fixed the hot air problem, but the air problem remains. where does the incoming air leak from? I can feel it through the vents but I cant see where it flows in through the firewall.