radiator fan always-on, anung disadvantages?

**ravelcop** · August 22nd, 2005 10:03 AM

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** · August 22nd, 2005 10:12 AM

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** · August 22nd, 2005 10:24 AM

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

**euro_c** · August 22nd, 2005 05:00 PM

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** · August 22nd, 2005 06:31 PM

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

**buknoy2002** · August 22nd, 2005 09:20 PM

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

**theveed** · August 22nd, 2005 09:24 PM

Originally Posted by 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

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.

**boybi** · August 22nd, 2005 09:26 PM

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.

Originally Posted by 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

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** · December 8th, 2005 05:25 AM

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!