No thermostat

[mark_t]

matanda na kasi yung engine, at mapapadalas na magluko yung thrmostat at thermoswitch (its what turns on the fan. its a sensor). 700 yung thermostat, at 1200 yung thermoswitch sa casa. the problem is that these components become less reliable when the other parts like radiator, fans start breaking down one at a time.

at dito rin kasi normal operating temp is reached faster than in the temperate countries due to high ambient air temp (even if cold season dito). the engine cooling system will pressurise din naman even without thermostat, and i can do away with the thermoswitch.

what do you guys think?[/quote]

Sino po nag sabi sa inyo nito?

And the purpose of the thermostat is not to pressurise the cooling
system.

One of the properties of liquids is if you apply pressure, heat will increase.
If you apply heat then pressure will also increase in direct proportion.

[mark_t]

removing a thermostat thinking it will solve some cooling problems anly lead to multiple problems as a result of overcooling. imagine yourself complaining of the heat in manila, but you go inside a meat locker at -15 degrees celsius, did it solve the problem? or did it create another but worse problem? the thermostat had been installed by the factory for a couple of reasons. they were mandated by around 400 or so engineers who designed that particular engine. who is juan who did not even finish high school telling you to remove the thermostat because "pampagulo lang yan" mentality. to give you some effects of overcooled engines:
1. the engine is inefficient, low power because you cooled off the heat given off by the fuel(cook rice and use a lot of firewood and raise the pot way lot higher away from the fire analogy),
2. the engine's pistons were machined with a clearance between it and the cylinder bore for aluminum piston expansion to better fit the cylinder bore- loose compression syndrome,
3. since the pistons are loose, there is a lot of blowby gases leaking unburnt fuel to the crankcase-crankcase emissions forming gum and varnish in the oil, demonstrated readily by the brown evidence on the oil dipstick end
4. shortens the service life of the oil because of contamination by unburnt fuel and of course acid formation,
5. sludge buildup because the oil is unable to get hot enought to expel the moisture it absorbed from the ambient air
6. the engine requires more fuel for the same power output, remember, you wasted the heat by overcooling,
7. since the piston is not allowed to fit properly into the cylinder walls by expansion from heat, the piston slaps and makes more noise,
8. removing the thermostat makes cooling imbalanced- the cylinder closest to the water pump is cooler than the cylinder farthest away, resulting in uneven heat distribution and dissipation causing the cylinder head or the engine block to warp,
9. since the combustion chambers are not hot enough, they tend to build up carbon requiring premature cylindr head servicing,
10. too cold of an engine results in increased HC (unburnt fuel) emissions, more CO(incompletely burnt fuel) emissions
11. for electronically controlled transmissions, they will never go to O/D (overdrive) because one of the parameters to overdrive is that the coolant temperature msut be around 190-240 degrees fahrenheit to enable the powertrain control module to engage the O/D mode in conjunction with the throttle sensor and vehicle speed sensor signals
12. it is just plain stupid to assume we know more than the engineers who burnt the midnight candle studying and figuring this s--t out
jick

Thank you very much.

[crashtestdummy]

And the purpose of the thermostat is not to pressurise the cooling
system.

One of the properties of liquids is if you apply pressure, heat will increase.
If you apply heat then pressure will also increase in direct proportion.

Yes, the thermostat's purpose is not to pressurize the cooling system. The one that does that job is the PRESSURE CAP or TANK CAP or RADIATOR CAP.

And yes, its directly proportional that increasing temperature incerases pressure.

When overheating occurs, the tank cap is usually ignored.
Its not just a cap, it acts the same way as the thermostat. Pag deffective ang tank cap, pressure within the cooling system is released in the form of water vapor.
[(Water + Heat = Pressure ) + deffective tank cap = pressurized water vapor ] = Rapid Water loss = Over heating

This explanation might help

Under pressure, the boiling point of the coolant is raised considerably. However, too much pressure will cause hoses and other parts to burst, so a system is needed to relieve pressure if it exceeds a certain point.

The job of maintaining the pressure in the cooling system belongs to the radiator cap. The cap is designed to release pressure if it reaches the specified upper limit that the system was designed to handle.

A bypass hose is located near the radiator cap. Once the radiator cap releases pressure some fluid is also released. The released fluid goes through the bypass hose and store it temporarily in a reserve tank.

Once the coolant temperature goes down, the cooling system creates a vacuum that siphons the released coolant in the reserve tank.

[boy_tino]

wag masyadong sisihin ang thermostat sa makina kung kaya't tumataas masyado ang temperature mo na konti na lang ay mag ooverheat na o dahil nasa pinas ka eh at mainit ang klima dito ay kailangan tanggalin ito para hindi tumaas ang temperature isa na lang itong matandang kasabihan o haka-haka.

kaya nagiging dahilan ng pagtaas ang temperature ng makina ang thermostat dahil hindi na ito gumagana ng maayos at dahil babad nga ito sa tubig so ibig sabihin sa dami ng kalawang nito ay hindi na ito masyado pang nakakabuka pa at ibig sabihin na nito ay kelangan mo nang palitan ang thermostat.

kung tatanggalin mo ang thermostat siguradong magkakaproblema ka sa temperature ng makina mo dahil mabilis itong tataas lalo na kung hindi ka nakakatakbo ng mabilis at kaya ko nasabi ito dahil naranasan ko na yan sa FX ko na diesel nung tanggalin ng mekaniko ang thermostat ko dahil sabi nga nya mabilis tataas ang temperature ko kapag meron nito, pero kabaligtaran ang nangyari nung meron pa akong temperature ay hindi lumalagpas sa kalahati ang temperature ko kahit natatrapik pa ako ng matagal nung tanggalin diyos ko po lumalagpas sa kalahati ang temperature ko at kung matatrapik pa eh umaabot pa sa pula ang temperature ko kaya madalas nag rerevolution ako para bumaba ang temp.

iba pang mga maaaring dahilan kung bakit tumataas ang temperature:

sobra ang kakulangan ng langis ng makina mo, kaya kelangan mong dagdagan.

barado na ang maraming bilang ng rows ng radiator mo dahil sa dumi at dami ng mga kalawang nito at eto ay kelangan linisin at kung hindi makuha sa linis ay kelangan ng ipa-overhaul.

kawalan ng goma or seal sa radiator cap kahit nakatakip na ang radiator kung walang goma ang takip ay tatapon pa rin ang tubig nito lalo na kung naka-aircon ka na magiging sanhi ng pagtaas ng temperature dahil kumonti na ang tubig sa radiator mo.

sirang water pump pag-sira ito hindi ito makakaagos ng malakas paikot sa radiator at makina mo.

sobrang haba ng radiator hose medyo mahaba haba ang pag travel ng tubig mula sa makina papuntang radiator kung maikli ito agad agad ito makakapunta sa radiator para malamigan ang tubig.

tagas sa radiator at iba pang konektado dito.

ang maling tune-up.

[LeOxe]

hello guys!

if you're going to replace the thermostat, is it advisable to change the thermoswitch as well? or is it ok to replace the thermostat only?

thanks!

[boy_tino]

hello guys!

if you're going to replace the thermostat, is it advisable to change the thermoswitch as well? or is it ok to replace the thermostat only?

thanks!

kung hindi naman sira ang switch hindi mo na kelangan pang palitan

kung ang sira lang ay ang thermostat mismo yun talaga ang papalitan

pero yun iba dahil ayaw na nilang humantong na ang switch naman ang masisira parehas na lang pinapalitan para parehas silang bago

[jick.cejoco]

wag masyadong sisihin ang thermostat sa makina kung kaya't tumataas masyado ang temperature mo na konti na lang ay mag ooverheat na o dahil nasa pinas ka eh at mainit ang klima dito ay kailangan tanggalin ito para hindi tumaas ang temperature isa na lang itong matandang kasabihan o haka-haka.

kaya nagiging dahilan ng pagtaas ang temperature ng makina ang thermostat dahil hindi na ito gumagana ng maayos at dahil babad nga ito sa tubig so ibig sabihin sa dami ng kalawang nito ay hindi na ito masyado pang nakakabuka pa at ibig sabihin na nito ay kelangan mo nang palitan ang thermostat.

kung tatanggalin mo ang thermostat siguradong magkakaproblema ka sa temperature ng makina mo dahil mabilis itong tataas lalo na kung hindi ka nakakatakbo ng mabilis at kaya ko nasabi ito dahil naranasan ko na yan sa FX ko na diesel nung tanggalin ng mekaniko ang thermostat ko dahil sabi nga nya mabilis tataas ang temperature ko kapag meron nito, pero kabaligtaran ang nangyari nung meron pa akong temperature ay hindi lumalagpas sa kalahati ang temperature ko kahit natatrapik pa ako ng matagal nung tanggalin diyos ko po lumalagpas sa kalahati ang temperature ko at kung matatrapik pa eh umaabot pa sa pula ang temperature ko kaya madalas nag rerevolution ako para bumaba ang temp.

iba pang mga maaaring dahilan kung bakit tumataas ang temperature:

sobra ang kakulangan ng langis ng makina mo, kaya kelangan mong dagdagan.

barado na ang maraming bilang ng rows ng radiator mo dahil sa dumi at dami ng mga kalawang nito at eto ay kelangan linisin at kung hindi makuha sa linis ay kelangan ng ipa-overhaul.

kawalan ng goma or seal sa radiator cap kahit nakatakip na ang radiator kung walang goma ang takip ay tatapon pa rin ang tubig nito lalo na kung naka-aircon ka na magiging sanhi ng pagtaas ng temperature dahil kumonti na ang tubig sa radiator mo.

sirang water pump pag-sira ito hindi ito makakaagos ng malakas paikot sa radiator at makina mo.

sobrang haba ng radiator hose medyo mahaba haba ang pag travel ng tubig mula sa makina papuntang radiator kung maikli ito agad agad ito makakapunta sa radiator para malamigan ang tubig.

tagas sa radiator at iba pang konektado dito.

ang maling tune-up.

there two distinct types of thermostats: simple and compound. the simple one has only one shutter disc that when removed, results in engine overcooling, there is only one inlet and one outlet. however, the compound one has two shutter discs. it usually have two routes for coolant flow, when removed, results in engine overheating while the radiator is cooler than normal. as i the case of toyota 2E and 3E engines. many motorists experienced that when the thermostat was removed, the engine's coolant remains in the engine left to percolate whereas the coolant in the radiator gets pumped into a limited circuit to the thermostat housing and back to the radiator without circulating to the engine block and cylinder head.
jick
certified auto
guam

[cjtjamandra]

Nung nakita ko kasi yung radiator, hindi na nag ccirculate yung tubig, bumubuga na yung tubig tapos may kalawang, kailangan na daw i overhaul. tapos yung temp gauge hindi tumataaas kahit nirerevolusyon ko na yung makina.

[mark_t]

Nung nakita ko kasi yung radiator, hindi na nag ccirculate yung tubig, bumubuga na yung tubig tapos may kalawang, kailangan na daw i overhaul. tapos yung temp gauge hindi tumataaas kahit nirerevolusyon ko na yung makina.

Unang tanong sigurado ka ba na mechanic pinagdalhan mo ng sasakyan mo?
Tiningnan mo ba ang ID nya na me rating? They have this on their wallet.
There is no reason not to carry it.

Ano naman connection ng pagtaas ng ng temp gauge sa pag revolusyon mo ng engine? Kailangan ba tumaas ang temp pag nagrerevolusyon?

Kung ikaw may ari ng sasakyan, ikaw din dahilan bakit me kalawang
yan.

[cjtjamandra]

Unang tanong sigurado ka ba na mechanic pinagdalhan mo ng sasakyan mo?
Tiningnan mo ba ang ID nya na me rating? They have this on their wallet.
There is no reason not to carry it.

Ano naman connection ng pagtaas ng ng temp gauge sa pag revolusyon mo ng engine? Kailangan ba tumaas ang temp pag nagrerevolusyon?

Kung ikaw may ari ng sasakyan, ikaw din dahilan bakit me kalawang
yan.

Correction lang hindi akin yung sasakyan, yung car na yun tinignan lang namin pra bilhin sana.

Ibig kong sabihin kapag pinapainit ko yung makina hindi nagbabago yung temp nya.