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post #1 of 21 (permalink) Old 02-11-2010, 08:13 AM Thread Starter
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Heat + Cold

Interesting question I have, didn't seem to find an answer did a quick search, starting your car in the cold and cranking the heat up as soon as you start your car while the engine is cold, any thoughts?

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post #2 of 21 (permalink) Old 02-11-2010, 08:26 AM
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The Heat won't work until the engine is warm, it uses Coolant to heat the inside of your car, Cold Coolant = Cold air... I always deal with the cold in the morning for about two to five minutes, check the Coolant temp on the DIC and when it reaches about 135, that is when I can start feeling the warm air...

Why have Cold air blowing around in your car making you colder when you can wait five minutes to be toasty???
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post #3 of 21 (permalink) Old 02-11-2010, 08:34 AM Thread Starter
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well i usually start it with the heat on and then leave my car on for about 5 - 7 minutes then go out to drive , and its toasty, i wanted to make sure thats ok 2 do

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post #4 of 21 (permalink) Old 02-11-2010, 08:39 AM
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Its alright, but your not getting any progress for at least three minutes of that idle time... Its better to just start the car up and go... It says in my owners manual at least to Not idle for extended periods of time, and to me, starting it up and letting it sit for almost ten minutes, that extended, it isn't a diesel. I'd say start it up, wait a couple minutes, get in the car and go, by time you are at the exit of your neighborhood you can turn the heat on full blast and it will warm you up quickly.

Also, if you haven't done already, switch to a higher quality engine oil so you don't risk damaging during cold starts. Lower quality oils don't protect in below freezing temps as well as a quality synthetic does.
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post #5 of 21 (permalink) Old 02-11-2010, 09:15 AM
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I use my car start in the morning (I leave the heat on 4 when I shut it off for the night), but I only like to do it for 3-5 minutes..

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post #6 of 21 (permalink) Old 02-11-2010, 10:32 AM
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funny this is brought up...i start my car for like 5-10 mins before i leave monday - friday. today i started it, shut it off. went out and pulled it in the garage. 10 mins later i went out to start it, and it turned but wouldnt ignite. did it twice. the third time i just held it and it slooowly started.. anything?

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post #7 of 21 (permalink) Old 02-11-2010, 10:38 AM
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not sure, but these things ain't diesels... They can idle, but not for extended periods of time, and anything near ten minutes is boardering the extended period of time in most mechanics books...

In the old Iron block engine days where everything from the block to the valves were iron, it was good to warm them up, but now with everything being aluminum, just turning them on and idling for a warm up is potentially a problem... 3-5 minutes is all it takes for the Heater to start working in these cars, and about 2 minutes is all it takes for the thing to warm up to an efficient operating temp...
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post #8 of 21 (permalink) Old 02-11-2010, 11:36 AM
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as everyone else said, i'd imagine its fine. careful if its too cold. my front window cracked that way
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post #9 of 21 (permalink) Old 02-11-2010, 03:19 PM Thread Starter
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intersting thanks for the input

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post #10 of 21 (permalink) Old 02-11-2010, 03:31 PM
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i don't see why it's a problem to have them runing for 10 minutes at idle. I let mine run every morning in the cold weather and when i hop in the heat is coming out strong. think about this, the GM cars and trucks that have remote start all run for up to ten minutes before they shut themselves off. that means that GM see's no problem with a car running for 10 minutes at idle.

---------- Post added at 05:31 PM ---------- Previous post was at 05:30 PM ----------

also, if it's really cold out like it gets here in MN, it is a very bad idea to just hop in and go without letting it warm up for at least a couple minutes.
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