radiator fan always-on, anung disadvantages?

[ravelcop]

Yung radiator fan ng vanette ko, ginawang fixed (or rekta ba yun?) ng mekaniko, sabi nya para hindi daw mag-overheat, kaso sobrang ingay naman pag nagre-rev ako tsaka ang tagal umabot sa recommended operating temp. Anu po mga disadvantages having this kind of setup sa cooling system? Do you think it would also contribute to fuel consumption pag palaging umaandar ang radiator fan mo?

[BlueBimmer]

when running from a cold start ur van will consume slightly more gas coz it will take the engine longer to reach optimum operating temp..

[ravelcop]

how about sa mga normal cooling systems, by the time their radiator fan engages, wala bang slight increase sa fuel consumption?

...sorry kung medyo stupid ang question ko

[theveed]

how about sa mga normal cooling systems, by the time their radiator fan engages, wala bang slight increase sa fuel consumption?

...sorry kung medyo stupid ang question ko

the diff is that sa normal car, the temp has QUICKLY reached its optimal temp range before the fan kicks in.

If your fan kicks in when the engine is still cool, it'll take longer for the engine to heat up coz the water circulating the engine is being fan cooled. Although if you have a thermostat installed (or should I say, if you didnt touch your thermostat) it shouldn't matter coz water will not circulate through the block anyway.

Obvious negative will be possible early wear sa motor ng fan.

[euro_c]

siguro minimal lang kasi mostly electrical naman yung load and hindi matagal nakabukas yung fan...

baka lang mas mabilis masira ang fan kasi laging naka-on...

[NightRock]

There is no Harm.. I tried if before Ok naman

[buknoy2002]

why not lagyan mo ng switch para pwede mo off pa minsan minsan like during cold starts, and pag feeling mo pwede i rest yung fan sandali n di nman magoverheat ang car.

just dont forget to turn it on again

[boybi]

wala naman masamang effect kapag palaging naka ON yung radiator fan. ganito din naman ang setup ng mga rear wheel drive vehicles where the fan is driven by the engine.

why not lagyan mo ng switch para pwede mo off pa minsan minsan like during cold starts, and pag feeling mo pwede i rest yung fan sandali n di nman magoverheat ang car.

just dont forget to turn it on again

delikado ito, what if nakalimutan i-ON ang fan? or kung iba ang nagdrive at hindi alam na meron switch ang fan? overheat agad yan!

[weiltblitz]

nissan vanette has a "clutch fan" as what you called "engine fan". it is not an electrical device. Higher engine temp expands the oil inside the clutch fan thus initiating the full contact between the fan/water pump pulley and the main engine pulley.
In short, the fan/water pump goes with the engine's RPM.
If the engine is cool the fan is deactivated.
it is designed that way to decrease the bending of the blades during high speeds & to decrease the engine's load if this processes (turning the fan & the water pump) is not needed.
over a long time, the oil loses its consistency & the system fails.
Overheating is almost impossible with a "permanent" engine fan.
The only problem is that the engine "growls" during highers speeds or RPM!
As in maingay! Coz at higher speeds(>80kph) the fan's rpm is slower than the wind speed thus resistance causes the engine to "humm.."
I suggest replace ur clutch fan.... 1,700- 3,000 depending on ur budget!

[finchy18]

MY fan has automatic on and off.

[deepblue]

sir, pasingit na rin po dahil similar problem ko. My ride also has clutch fan (na laging on) instead of electric fan. I had it "repacked". Lalo po umingay ngayon at lumakas sa gas. Humina rin po ang pulling power ng ride ko. Ano po kaya problem?

TIA

[ravelcop]

What do you mean by "repacked"? Yan ba yung dinagdagan/pinalitan mo lang ng silicon oil ang loob ng clutch fan? I would suggest you buy a new clutch fan. Nasubukan ko din yan dati and ganyan din nangyari. Palaging naka-engaged ang fan. Nasayang lang silicon oil ko

[deepblue]

silicon oil nga yung sir. 4 tubes ang nagamit. kailangan na daw kasi irepack to prevent overheating. super lamig din po ngayon ang aircon pero super ingay naman ang fan lalo na sa high rev

[ravelcop]

4 tubes? naku! ang alam ko eh 2-3 tubes lang kelangan dyan. dapat hindi masyadong punuin coz sisikip, wala nang room for freewheel. maybe thats the reason kaya palaging naka-engaged yung fan. read this thread

[deepblue]

gets ko na sir. kaya pala super ingay. Thanks a lot. Pano po kaya ang gagawin ko? baklas uli then bawas ng silicon oil?

[weiltblitz]

gets ko na sir. kaya pala super ingay. Thanks a lot. Pano po kaya ang gagawin ko? baklas uli then bawas ng silicon oil?

i suggest u buy a new one... lalo na kung d ikaw ang gagawa at pakyawan ang mekaniko mo! lalo lng lalaki ang gastos mo sa kakatimpla ng right amount of silicon. its true! d lng kc amount ang importante, may specs din ang oil n gnagamit. in short, may lifespan tlaga ang mga clutch fan na yan wen it comes out sa market, and these parts are built to perform efficiently for that given lifespan. just like an electric motor driven na engine fan ng front- wheeled, pag matagal na bumabagal na din ang RPM ng fan so nag ooverheat. kahit pa- rewind mo eh d p din makuha ang orig na rpm.
imagine, kung ilang ulit mo p gagawin ito 2 make ur formulation right...kalas ka ng belts ng aircon, fan and kung mamalasin pati powersteering pa! e2 pa, malamang kakalasin mo din ang fan cover or iiwan mo ung blade dun sa cover
para ma- pull out ang clutchfan... tideous d b?! kaya ang mekaniko tatamadin tlaga lalo na kung mainit ang engine pag dinala mo, paso!!! hehehe! either ipe-permanent nila ang clutchfan or papalitan n lng ng bago.