Radiator fan weak due to AC?

[carlos]

but the thing is everytime i check the water level, okay naman and clean. so i left it alone and did not bother to replace it. Now, with regards to the thermostat that i removed, i don't have intentions to replace it and leave at that without the thermostat. We are in the tropics anyway and its really warm here so i guess continous circulation of water is necessary. Baka kasi later on if i put on a new thermostat, yun na naman ang magiging cause of overheating. maiistuck lang. Thanks for the suggestion, i appreciate the concern.

[theveed]

Dude, simple lang yan, di lalagyan ng thermostat ang kotse ng manufacturer kung di kailangan.

The "tabi-tabi mechanic" myths of a thermostat being not necesary is counterproductive to your car.

If that theory is true (tropical country no need for thermostat) then why do well maintained cars have no problem with a thermostat even for decades on?

What you're doing is band-aiding the problem and not fixing it.

In the end, it's still up to you, but the reality is still this. All cars come with a thermostat, if it is indeed counterproductive (as you claim), then how come only old, mis-cared for vehicles experience overheating after 3-5-7 years down the road? If that theory is true, shouldn't the car experience overheating the moment it leaves the factory?

Lastly, the car doesn't require continous circulation of water, especially during cold starts in the morning. It takes 2-3x more fuel and time to properly warm up a car without a thermostat valve installed, creating more wear, more emmission and more fuel consumption every time you start a cooled down engine.

[speedyfix]

theveed, good explanation! katamad to explain. hehe!

[otomatic]

yup. mag o-overcool naman ang engine at high speed kung walang thermostat. Most thermostats naman remain at stuck-open position pag nasira.

[Shadetree MKNX]

In my opinion, thermostats are only important because they allow the engine to attain proper operating temperatures quickly and maintain it the whole time it is running. Other than that, thermostats aren't needed at all.

I've read someone's post before saying that putting a thermostat slows down the flow of the water between the engine and the radiator, and that this helps to provide more time for the engine to "dump" more heat into the water as it passes by on its way to the rad. Likewise, he says, it also allows more time for the heated water to release the heat on to the cooling fins as it passes through the radiator.

I also believed that theory before but now I'm rethinking it a bit. I think the heat transfer has no relevance to the speed of the water circulation because although it is true that less heat gets transferred to the fast flowing water, it the rapid flow also brings the same water around faster thus causing it to pass by the engine more times than before.

In other words, it's a tradeoff. You lose one you gain another, so it evens out.

But then again, I wouldnt let my engine go without a thermostat for long for the same reasons I stated earlier.

[speedyfix]

In my opinion, thermostats are only important because they allow the engine to attain proper operating temperatures quickly and maintain it the whole time it is running.

i think that is a good enough reason to have them.

more that letting the water stay in the engine longer (thereby letting it take more heat from the engine), the thermostat lets the cooling liquid stay longer in the radiator letting it cool down more before having to go back around the engine (so that it is cooler when it eventually has to go back around).

[carlos]

yup. mag o-overcool naman ang engine at high speed kung walang thermostat. Most thermostats naman remain at stuck-open position pag nasira.

Mine did not happen that way, nakasara thermostat when my car overheated. Kaya nga di nag circulate yung water.

[Shadetree MKNX]

In my opinion, thermostats are only important because they allow the engine to attain proper operating temperatures quickly and maintain it the whole time it is running.

i think that is a good enough reason to have them.

more than letting the water stay in the engine longer (thereby letting it take more heat from the engine), the thermostat lets the cooling liquid stay longer in the radiator letting it cool down more before having to go back around the engine (so that it is cooler when it eventually has to go back around).

Yup.

[carlos]

There's an auxiliary that does the job to cool the water in the radiator. A sensor triggers the fan at a certain temperature.