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5280vvti
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5280vvti Apr 22, 2:10am - #161560 

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2002 Toyota Celica GT

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Does heater affect performance?

I notice that everytime I turn on my heater, my car feels like it looses power. If I'm at a stop and turn on the heater the car will immediately start idling higher. Is this to keep the engine at a certain temperature?
Shouldn't the heater not affect Performance in anyway? (The A/C is obviously not on...)

Is this normal?
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My Sixth Gear
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My Sixth Gear Apr 22, 2:11am - #161561 
2003 Spectra Blue Mica Toyota Celica
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2003 Toyota Celica

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yes it is normal, you have ABSOLUTELY nothing to worry about

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eric_h
2low2slow
eric_h Apr 22, 2:16am - #161562 

2low2slow
2002 Toyota Celica GT

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St.George, UT
yup hes right^^^ the a/c is another story, THAT will reduce your power because it runs off the engines crank

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CeLlYgT04
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CeLlYgT04 Apr 22, 2:17am - #161563 

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VSGTS14
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VSGTS14 Apr 22, 2:23am - #161564 

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Milford, NJ
when the a/c is not on the OFF position, you lose power.

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eric_h
2low2slow
eric_h Apr 22, 2:28am - #161565 

2low2slow
2002 Toyota Celica GT

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St.George, UT
thats what i ment

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5280vvti
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5280vvti Apr 22, 2:31am - #161566 

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Thanks for the replys guys, but why does the heater cause a reduction in power?
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eric_h
2low2slow
eric_h Apr 22, 2:39am - #161567 

2low2slow
2002 Toyota Celica GT

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St.George, UT
the heater doesnt, it just spins the fans and takes hot air from your engine bay. the a/c does when its on causue that f-er spins off the crank shaft to get going, your rpms are just going up a little to compensate for the heat removefd from the engine

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ironracer4130
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ironracer4130 Apr 22, 3:57am - #161568 

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2002 Toyota Celica GT

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Long Beach / Irvine CA
how about when you turn the front defroster on? I notice that the air is a lot cooler than normal. Is the AC running? because i like to drive with it on to cool my feet.
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GTSbyTRD
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GTSbyTRD Apr 22, 4:04am - #161569 

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2000 Toyota Celica

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Ft. Wayne, Indiana
I seem to get better gas milage if i turn my heater off...

Maybe its all mental though confused thumbsup

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Krayze
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Krayze Apr 22, 11:05pm - #161570 

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yes your a/c is running with you defreoster.

also how can the defroster cool yoru feet

it blows on the dash unles syou ahve it on defrost and heat then it will blow top and bottom of dash

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5280vvti
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5280vvti Apr 22, 11:46pm - #161571 

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^ You mean the a/c runs even when the A/C light isn't on confused spineyes
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eric_h
2low2slow
eric_h Apr 23, 12:20am - #161572 

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2002 Toyota Celica GT

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St.George, UT
no the deforster is just a fan that blows air over the dash, not the a/c, the a/c is a separate unit in itself

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Krayze
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Krayze Apr 23, 3:41am - #161573 

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wrong as off a few years ago all new cars defrosters use the a/c not at full blkast but if you use your fornt defroesters your a/c is running.

it is because teh a/c helps take the misture out of the air thus defrosting ou windows.

yes it is even running when you have it on hot in the winter. go ask any mechanic who works on new cars,

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ragingpaseo
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ragingpaseo Apr 23, 4:24am - #161574 
2003 blue Toyota Celica
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2003 Toyota Celica

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towson, md
simply your engine is fighting for electricity...
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DaBigTickett
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DaBigTickett Apr 23, 4:50am - #161575 

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Chino Hills, CA
Originally Posted by My Sixth Gear
yes it is normal, you have ABSOLUTELY nothing to worry about
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Celicatastrophe
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Celicatastrophe Apr 23, 5:07am - #161576 
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2000 Toyota Celica GT

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Jacksonville, Florida
As someone said even if your A/C button is off and you use the defroster your a/c starts running. Its quite obvious when the air coming out is very cold yet the A/C button is off. I'm glad someone mentioned that because I wasn't sure if i was losing it.

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ironracer4130
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ironracer4130 Apr 23, 6:12pm - #161577 

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2002 Toyota Celica GT

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Long Beach / Irvine CA
yeah that's what i meant. i leave the knob on the second to last one on the right, where it shoots air from the top of the dash and the bottom so it cools my feet. im the type of person that does't wear shoes when i drive.Yeah, i always thought that the ac was running with the light off but wasn't sure either. now i know, thanks. thumbsup
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5280vvti
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5280vvti Apr 23, 7:27pm - #161578 

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Thanks for all the replys guys, it all makes sense now smile
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stefanoc
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stefanoc Apr 23, 7:46pm - #161579 

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CA
i know a lot of ppl turn on their heater when racing for some reason. is that just something stupid or do they do it for a reason?
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5280vvti
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5280vvti Apr 23, 7:48pm - #161580 

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2002 Toyota Celica GT

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Originally Posted by stefanoc
i know a lot of ppl turn on their heater when racing for some reason. is that just something stupid or do they do it for a reason?


I do it before a race. It lets out a lot of the hot air, since the car is producing so much more of it.
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CID498
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CID498 Apr 23, 10:24pm - #161581 

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2000 Toyota Celica GT

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So.Cal
OK now fer the truth about heaters...


You will not lose power while running it how it werks is by taking hot water from yer cooling system and runnin it through a heater core in the dash, cabin air is moved by a blower motor that is shared by the heater core and the evaporator for the a/c , The fans on the condensor and radiator only come on when the a/c is on or when the temp sensor on the radiator is tripped. the reason racers run the heater is it adds more engine cooling.


So the answer is NO it does not rob horsepower.

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eric_h
2low2slow
eric_h Apr 24, 4:47am - #161582 

2low2slow
2002 Toyota Celica GT

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St.George, UT
guess i learned something rice

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