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  1. Join Date
    Dec 2007
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    106
    #1
    Hello po mga experts. Wanted to ask about car radiator cooling fan (pls correct me if im wrong).

    gawain ko magopen ng hood ng car when I get home para mas madaling lumamig. When I turn off the engine and say for about 2-3 minutes pag switch ko to ACC, may naririnig akong tumutunog sa may hood. When I checked it out, nakita ko umaandar ung cooling fan. Pinabayaan ko last night for about 10 mins para mas mabilis lumamig. Is this advisable? Do you do this also sa car nyo?

    TIA.

  2. Join Date
    Nov 2005
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    394
    #2
    10 mins? parang masyadong matagal pre... mapapadali naman ang battery life mo nyan... check your cooling system, diba nagkukulang ang coolant mo?

    na experience ko kasi yan before. after ko gamitin ang oto ko naiiwang buhay ang rad fan. which would last up to 2 mins kung maikli lang tinakbo and lasts longer naman pag medyo mahaba ang byinahe ko. i checked my coolant and refilled it and found out na bawas siya. i remembered na nagpalit nga pala ko ng radiator hose. and apparently after sya palitan hindi pinacirculate ng mabuti ung tubig. basta pinuno lang ang radiator and sinara na ang cap. pag ganito maaring may maiwang hangin sa loob ng cooling system.

    so what i did was to cool down the engine first then opened the rad cap refilled it to full then started the engine. i waited until the temperature reached normal and the thermostat to open. pag open nung thermostat bumaba level ng coolant sa i filled it up again. hinintay ko lang hanggang sa tuwing magbukas ang thermostat hindi signficant ang pagbaba ng coolant level. after nun ok na di na naiiwang naka on rad fan ko. hope this helps.

  3. Join Date
    Nov 2008
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    641
    #3
    Chief, ako naman ang practice ko is before ko i-shut off yung engine, pinapakiramdaman ko muna yung fan kung umaandar pa, if umaandar pa wait ko muna 'til it shuts off para at least i'm sure that the water temp within the engine is already cool, sometimes wait ko pa nga isang cycle, (yun bang hintayin ko muna umandar uli hanggang sa mag shut-off) para sure cool talaga engine lalo na kapag galing sa malayo. These steps didnt gave me situations like yours. You can try chief . Thanks!

  4. Join Date
    Jan 2003
    Posts
    3,779
    #4
    there's really no effect on what you guys are doing in regards to temperature.
    engine temp stabilize once it's on & running, that's called operating temparature. as long as the temp is within the window of operating temp, it's fine.

    as what the TS stated, there's no significant effect sa procedure nya since only the water inside the radiator would cool down a bit, while the water in the engine still remain the same cause it's not circulating.

    opening the hood after shutting off the engine would help to speed up cool down since air can circulate more & warm air can go out faster.

  5. Join Date
    Jan 2003
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    451
    #5
    If your cooling system is fine, excessive warm-up (or warm-down) periods are unnecessary. Sayang lang gasolina.

  6. Join Date
    Dec 2007
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    106
    #6
    Quote Originally Posted by jvnj View Post
    Chief, ako naman ang practice ko is before ko i-shut off yung engine, pinapakiramdaman ko muna yung fan kung umaandar pa, if umaandar pa wait ko muna 'til it shuts off para at least i'm sure that the water temp within the engine is already cool, sometimes wait ko pa nga isang cycle, (yun bang hintayin ko muna umandar uli hanggang sa mag shut-off) para sure cool talaga engine lalo na kapag galing sa malayo. These steps didnt gave me situations like yours. You can try chief . Thanks!
    thanks po sa mga nagreply.. *jvnj - actually pareho tayo. i noticed kapag i-shut off ko ung engine then put it back to ACC, umaandar po ung fan. Hinayaan ko kahapon then after mga 5 minutes nag off kusa ung fan. habang umaandar ung fan (off na po ung engine) naka open din po ung hood. Kapag umaandar po ba ung fan with the engine off gumagamit pa din ba sya ng coolant?

  7. Join Date
    Oct 2008
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    165
    #7
    ^^ pagumaandar yung fan.. gumagamit sya ng kuryente.. hihi.. kidding aside..
    tanong lang din po sa inyo.. bakit nyo po pinapalamig ng husto ang makina nyo pagnagpapark na kyo?? may masisira ba sa auto or sa cooling system nyo paghindi sya lumamig agad?? im just curious lang po..

  8. Join Date
    Nov 2008
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    641
    #8
    Quote Originally Posted by rsscertified View Post
    thanks po sa mga nagreply.. *jvnj - actually pareho tayo. i noticed kapag i-shut off ko ung engine then put it back to ACC, umaandar po ung fan. Hinayaan ko kahapon then after mga 5 minutes nag off kusa ung fan. habang umaandar ung fan (off na po ung engine) naka open din po ung hood. Kapag umaandar po ba ung fan with the engine off gumagamit pa din ba sya ng coolant?
    Chief, Yup, ganung-ganon po ang ginagawa ko. Anyway with your question, no hindi po sya gumagamit ng coolant if the engine is OFF, better cool down while the engine is running, at least with this practice, you're sure that you are cooling the engine as a whole not only the water inside the radiator.
    Sa question po ni sir Tepperz, actually wala naman po masisira if you will immediately shut-off the engine, but doing those practice will prolong the engine life. Why? actually madami po benefits, like reduced oil burning, limiting or minimizing the engine metal parts contraction, and etc. Minsan nga po natanong ko sa sarili ko, why does (mostly) turbo charged engine have turbo timer (although wala po turbo oto ko he he!)? it is because since turbo engine operates on a higher temp, needs to cool down to preserve or protect its internal parts.

  9. Join Date
    Dec 2007
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    106
    #9
    Quote Originally Posted by jvnj View Post
    Chief, Yup, ganung-ganon po ang ginagawa ko. Anyway with your question, no hindi po sya gumagamit ng coolant if the engine is OFF, better cool down while the engine is running, at least with this practice, you're sure that you are cooling the engine as a whole not only the water inside the radiator.
    Sa question po ni sir Tepperz, actually wala naman po masisira if you will immediately shut-off the engine, but doing those practice will prolong the engine life. Why? actually madami po benefits, like reduced oil burning, limiting or minimizing the engine metal parts contraction, and etc. Minsan nga po natanong ko sa sarili ko, why does (mostly) turbo charged engine have turbo timer (although wala po turbo oto ko he he!)? it is because since turbo engine operates on a higher temp, needs to cool down to preserve or protect its internal parts.
    *JVNJ - with your practice po - how many minutes po to cool down the engine? thanks!!

  10. Join Date
    Nov 2008
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    641
    #10
    Chief, sorry been busy. Anyway, havent clocked the time during cool down period, basta ang mino monitor ko lang is the radiator fan, if it is still -on, di ko muna pinapatay and wait till it shuts off. Kung minsan naman kapag long distant drive, wait ko muna isang cycle (kung baga, wait for the fan to turn-on till it shuts off) then taska ko pinapatay. Yes tama ibang guru's medyo waste of energy pero had my benefits naman. Thanks chief!

  11. Join Date
    Nov 2005
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    7,976
    #11
    naka on ba a/c thermostat n'yo while making the final parking? if yes talagang tatakbo ang aux fan. switch off your a/c thermostat at least 500m to 1 km before para totally stopped na siya. this way you have at least few minutes for the battery to charge up for the next start.

    IMO no need to open the hood to cool down, malalaspag pa yan ng kaka bukas-sara, with proper coolant mixture it will serve its purpose.

  12. Join Date
    Nov 2008
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    641
    #12
    Quote Originally Posted by XTO View Post
    naka on ba a/c thermostat n'yo while making the final parking? if yes talagang tatakbo ang aux fan. switch off your a/c thermostat at least 500m to 1 km before para totally stopped na siya. this way you have at least few minutes for the battery to charge up for the next start.

    IMO no need to open the hood to cool down, malalaspag pa yan ng kaka bukas-sara, with proper coolant mixture it will serve its purpose.
    Chief, negative sir, naka off na yung A/C ko while I make the cool down. Actually ang praktis ko nga eh kung mga 100 to 50 mtrs approaching the destination eh pinapatay ko na A/C since malamig pa naman ang hangin. This way, i'm cooling down the A/C system plus the engine na din, masyado ko kasi bini-baby ride ko kahit junky he he! Thanks for the suggestion chief!

  13. Join Date
    Dec 2007
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    106
    #13
    Quote Originally Posted by jvnj View Post
    Chief, sorry been busy. Anyway, havent clocked the time during cool down period, basta ang mino monitor ko lang is the radiator fan, if it is still -on, di ko muna pinapatay and wait till it shuts off. Kung minsan naman kapag long distant drive, wait ko muna isang cycle (kung baga, wait for the fan to turn-on till it shuts off) then taska ko pinapatay. Yes tama ibang guru's medyo waste of energy pero had my benefits naman. Thanks chief!
    Thanks JVNJ!

  14. Join Date
    Dec 2007
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    106
    #14
    Quote Originally Posted by XTO View Post
    naka on ba a/c thermostat n'yo while making the final parking? if yes talagang tatakbo ang aux fan. switch off your a/c thermostat at least 500m to 1 km before para totally stopped na siya. this way you have at least few minutes for the battery to charge up for the next start.

    IMO no need to open the hood to cool down, malalaspag pa yan ng kaka bukas-sara, with proper coolant mixture it will serve its purpose.
    thanks for this tip sir.

  15. Join Date
    Jan 2009
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    6,452
    #15
    Quote Originally Posted by XTO View Post
    naka on ba a/c thermostat n'yo while making the final parking? if yes talagang tatakbo ang aux fan. switch off your a/c thermostat at least 500m to 1 km before para totally stopped na siya. this way you have at least few minutes for the battery to charge up for the next start.

    IMO no need to open the hood to cool down, malalaspag pa yan ng kaka bukas-sara, with proper coolant mixture it will serve its purpose.
    Unless there's a problem with your charging system, there's no need to turn off the A/C before reaching your destination.

    I agree on the 2nd part, opening the hood to cool down the engine is unnecessary. In fact, it's better for the engine to be warm as it will use up less gas to warm up on its next use.

  16. Join Date
    Nov 2005
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    #16
    Quote Originally Posted by oj88 View Post
    Unless there's a problem with your charging system, there's no need to turn off the A/C before reaching your destination.
    luckily, i haven't experienced any problem with that it has been my habit doing it for so many years in all our cars primarily to avoid the sour smell coming from the a/c vents. a lot of tsikoteers benefited from that too.

    in fact i only replaced my stock motolite excel battery last month - after serving my crosswind since '01 :2thumbsup:

  17. Join Date
    Nov 2008
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    641
    #17
    Quote Originally Posted by XTO View Post
    luckily, i haven't experienced any problem with that it has been my habit doing it for so many years in all our cars primarily to avoid the sour smell coming from the a/c vents. a lot of tsikoteers benefited from that too.

    in fact i only replaced my stock motolite excel battery last month - after serving my crosswind since '01 :2thumbsup:
    Galeng Sir!

  18. Join Date
    Nov 2002
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    451
    #18
    just like with what xto said, i've been practicing the same procedure since i got my first car, turo ng bro ko, in fact not only will it cool your engine but yung amoy ng a/c esp pag hindi sumisikat ang araw ay hindi nagkakaron. I drive cavite-makati-cavite kaya talagang nag init ng husto ang engine so, 2 blocks before the house, switch off ang thermostat, fan na lang gagana, then pag dating ng house, mga 10sec idle lang, patay na engine, check kung takbo pa yung aux fan, if yes wait pa mga 5-10secs til mag off sya, then oks na.

Car radiator cooling fan