Radiator / Overheating Problem

**mina_nuka** · November 8th, 2018 04:14 PM

Originally Posted by ghon14

hello Guys...
Been experienced over heating issue's on my toyota 5k engine recently,nagtatapon ng tubig sa reservoir pag na stuck sa traffic,pero di naman nabulwak tubig pag nirerev pag bagong start....so i decided po na pacheck sa mechanic and he diagnosed na need palitan cylinder gasket.. .so since ayoko lumalala problem sabi ko GO lang at palitan na need ng palit since old model narin toyo ko...
so eto po mga napalitan:

cylinder head gasket
manifold gasket
valve seals
sparkplugs
Piston rings

after mapalitan lahat,eto ang scenario...
nawala overheating issue been stuck on a heavy traffic almost 2hrs nov.1...then for me thats a good sign kc steady sa 1/4 ang temp gauge ko. . .
but out of curiosity,from cold start open ko radiator cap,okay naman ikot ng tubig,pero nung nirev ko dami tumatapon pag ni rerev...

ang tanong ko po..okay lang po ba ang ganun since hindi naman na tumataas ang temp kahit traffic??
worried lang ako kc dati pag cold start hindi naman nabulwak tubig pag ni rerev..

your "mechanic" removed the thermostat

**Archerfish** · November 8th, 2018 06:43 PM

Originally Posted by mina_nuka

your "mechanic" removed the thermostat

Why is it that they insist on removing the thermostat? I remember when I had the radiator cleaned, that guy kept on suggesting to remove it. I just smiled back.

**chronicle** · November 8th, 2018 06:50 PM

^
Maybe because the main concern is overheat based on the gauge which relies also on the thermostat.

By removing it, the only indicator will be gone and the clueless owner would be happy since di na nagooverheat... Sa gauge.

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**ninjababez** · November 8th, 2018 07:02 PM

Originally Posted by Archerfish

Why is it that they insist on removing the thermostat? I remember when I had the radiator cleaned, that guy kept on suggesting to remove it. I just smiled back.

killer smile ka saw kasi bro [emoji23][emoji1787][emoji869][emoji869]

Originally Posted by chronicle

^
Maybe because the main concern is overheat based on the gauge which relies also on the thermostat.

By removing it, the only indicator will be gone and the clueless owner would be happy since di na nagooverheat... Sa gauge.

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iba parin thermostat sa "temp diode" bro. sa vios kasi napansin ko nasa thermo switch (aux fan auto switch) din yun trigger ng high temp reading.

kaya lang nila tinatanggal thermostat para umikot agad yun tubig (cmiiw). ang downside nito, matagal ma reach optimal operating temp. ganun din nangyayari pag always ON ang aux/rad fan diba, dahil natatago kasi yun totoong sira ng auto bakit nag overheat.
yan yun mga shortcut ng mga old "schooled" mechanic. si mang jorge ng banawe, ayaw din sana ikabit yun bagong bili ko thermostat. sabi ko nalang, sayang at nabili ko na. ayaw ko rin kasi ma offend, dahil ok naman (so far) yun gawa nila sa radiator ko.

btw lahat yan dito ko lang na pickup sa tsikot, tpc, pdvd and viber messages nila bro vinci, egan and others.

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**chronicle** · November 8th, 2018 07:29 PM

Originally Posted by ninjababez

killer smile ka saw kasi bro [emoji23][emoji1787][emoji869][emoji869]iba parin thermostat sa "temp diode" bro. sa vios kasi napansin ko nasa thermo switch (aux fan auto switch) din yun trigger ng high temp reading.

kaya lang nila tinatanggal thermostat para umikot agad yun tubig (cmiiw). ang downside nito, matagal ma reach optimal operating temp. ganun din nangyayari pag always ON ang aux/rad fan diba, dahil natatago kasi yun totoong sira ng auto bakit nag overheat.
yan yun mga shortcut ng mga old "schooled" mechanic. si mang jorge ng banawe, ayaw din sana ikabit yun bagong bili ko thermostat. sabi ko nalang, sayang at nabili ko na. ayaw ko rin kasi ma offend, dahil ok naman (so far) yun gawa nila sa radiator ko.

btw lahat yan dito ko lang na pickup sa tsikot, tpc, pdvd and viber messages nila bro vinci, egan and others.

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Thanks for correcting ninj . [emoji3]

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**mina_nuka** · November 8th, 2018 07:57 PM

Cars with two way thermostat will be overcooled. Hindi nga naman mag overheat, overcooled naman.

Cars with three way thermostat will overheat if you remove the thermostat.

Ito talagang mga engineers hindi nakikinig sa mekaniko o sa parts replacer. Tsk tsk tsk..

**dr. d** · November 8th, 2018 11:29 PM

so what does the thermostat do in a basic engine?

in the tropics, the thermostat's function is to have the engine reach working temperature faster.
when the engine is cold, the thermostat is closed. the coolant in the cylinder block has nowhere to go, and therefore heats up fast.
as the temp increases, the thermostat opens up. this allows the hot coolant to leave the engine block and go into the radiator, where it is cooled. it then goes back to the engine, where it cools the latter such that it does not overheat.

so why do we want the engine to reach working temperature fast?
the engine is more fuel-efficient at working temp.
it is also more efficient. period.

so what happens if the working temp is not reached fast?
we spend more for our fuel. just a bit. but more, nonetheless. and, it spews out more pollution.
also, the engine is less efficient. less oomph.

so why does mechanic recommend thermostat be removed?
it's one less part to malfunction.
and because he does not know why the designer placed it there in the first place.

heh heh.

**ninjababez** · November 10th, 2018 06:15 PM

ok na for a few days yun temp. flushed distilled water and poured in toyota long life coolant [emoji869][emoji869]

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**Archerfish** · November 10th, 2018 11:37 PM

Excellent explanation on the function of thermostat. This should be helpful for those who are starting to learn the basics of car maintenance.

The old school mechanics who would even say that it will run without it, can be ignored politely.

**Bunwa** · November 13th, 2018 03:33 AM

I've had overheating problems last month. Now the initial observation was, its a cyclinder head issue since nauubos yung fluid sa radiator at reserve at bumubulwak nung tinest yung flow ng coolant/water. PinaLavramon ko yung engine tapos nung tinignan yung radiator sinuggest na palitan ko yung radiator. So upgraded na sa 2-row aluminum radiator at di na nagoverheat pero nung pinainit to test kung nag circulate bumulwak pa din. My question is, should I be concerned that its a cyclinder head issue since di nag overheat at stable na yung coolant supply, na di nag drain or apaw at wala naman yung one of the signs na milky white substance sa oil cap?