ok lang ba na tangalin na lang yung thermostat to prevent overheating?

[bangkeroboy21]

hello mga sirs, i was driving earlier today on the way to work when suddenly within 15 minutes of driving, biglang nag ooverheat yung car! the needle gauge was at 3/4ths level. akala ko kulang lang ng tubig so balik ako sa pinakamalapit na caltex sa bahay namin, and sabay buhos ng buhos ng tubig etc sa radiator and puno ng water sa radiator. pero ang problema, nag ooverheat pa rin. so kinonsulta ko yung isang mekaniko, at pinagawa sa akin ang mga sumusunod:

1. turn on engine, see if nagooverheat pa rin. OO

2. remove radiator cap.

3. rev the engine/step on the gas

ang pinakita nia sa akin, BUMUBULWAK daw yung coolant/water mula sa openning ng radiator pag inaapakan ang gas pedal, ibig sabihin daw. may problema daw sa CYLINDER GASKET.
at yun na nga top overhauling etc yung kailangan. (sakit ng ulo ko nung marining yun)

i asked for a second opinion naman dun sa isa pang mekaniko, sabi niya, baka daw makuha naman daw sa "PAGTANGGAL ng THERMOSTAT" the logic being, baka daw sira na kaya hindi dumadaloy ang tubig/coolant. it's a worth try.

so pinatanggal ko na thermostat, and after that. hindi na nga siya nag ooverheat. at least hindi within 10 to 30 mins of idling and driving, tulad kanina. (hindi ko pa nasusubukan mag long drive eh.)

sabi ng mekaniko, ok na daw yun, hindi na raw magooverheat, generally from what i saw, i'm inclined to agree. pero paranoid pa din ako sa gasket/cylinder head eh, naranasan ko nang duguin sa overhaul and i want to make sure.

ang tanong ko pa ay ganito, talaga po bang sintomas ng broken gasket head ang pagbulwak ng coolant? at ok lang ba to continue driving the car this way? (antipolo-marikina lang naman generaly biyahe ko)

btw, the car's make and model is Mitsubishi Eclipse 99 4g63 yung makina. thanks mga sirs!

[my_2_cents]

Mitsubish*t is synonymous to OVERHEATING....

Removing the thermostat will simply make the engine over cool, which is bad. It will increase fuel consumption, as the engine CTS (coolant temperature sensor) will assume the engine's not up to normal operating temperature, and simply inject more fuel in. This will cause premature engine wear, as the excess fuel will wash the oil from the cylinder bores (bore wash).

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my_2_cents

[slamm]

Removing the thermostat will simply make the engine over cool, which is bad. It will increase fuel consumption, as the engine CTS (coolant temperature sensor) will assume the engine's not up to normal operating temperature, and simply inject more fuel in. This will cause premature engine wear, as the excess fuel will wash the oil from the cylinder bores (bore wash).

Exactly. The thermostat is there for a reason. Mura lang naman to buy a new one if the old one is busted/stuck-up.

Check also the rest of your cooling system (aux fan operation, radiator, replace the radiator cap, etc.) since it's almost summer as well.

If one of your mechanic suspects a cylinder head problem, have a compression test done at a reputable shop; thats the precise way to determine such problems. You can try Speedyfix in San Juan if you're near that area.

[my_2_cents]

Basura talaga ang Mitsubullsh*t ayon sa karanasan ko sa aking dating 1981 Sigma/Galant. Kaya pala tinanggal ng dating may-ari iyong thermostat dahil tumatagas na ang tubig sa langis dahil sa bulok na cylinder head...

Kalawangin pa.... FAIL!!!

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my_2_cents

[khirmal]

. thermostat is designed to maintain the operating temperature of the engine. kung stucked closed, yan ang culprit. normally open yan.
2. water pump is designed to circulate the coolant inside the engie. pagka binuksan mo yung radiator cap natural bubulwak.
3. kapag ni-rev mo lalong lalakas ang bulwak
4. kapag hindi nakalagay ang thermostat, continues an ikot ng coolant, wala sa normal operating temperature ang engine. kung may ecu ang oto mo, efi pa. mase-sense ng ecu (thru thermal sensor) na wala sa normal operating temp ang engine, so tataas ang idle.
5. kung talagang naghahalo na ang oil at coolant sa engine mo, check mo yung dipstick mo. dapat iba ang kulay, hindi purong langis.
6. magpacompression test ka, it will help
7. nagbabawas ba ang coolant mo? kung may leak isang cause ng overheat yan. trace mo kung saan yung leak. kung walang leak check mo ang coolant reservoir mo
may langis. kung may langis, aray kupo, gasket head possible na tama.
8. kung hindi talaga nagbabawas ng coolant, e baka barado lang ang lines ng radiator. palinis mo or palitan mo ng bago kung may alloted naman pera.
9. pagpunta mo sa radiator shop at mabanggit mo na nag-overheat, tatanong sayo, "may thermostat ba yan?" sabihin mo na lang wala. kasi siguradong sasabihin sayo na ang cause ng over heat e yung thermostat.

IMHO Sir, mabuting palinis mo muna yung radiator mo Sir. kung sasabihin sayo ng maglilinis na madami ng patay na linya. yan ang isang cause.
tanong mo kung pwede pa. kung barado na talga, bili ka ng bago or suplus. then bili ka na rin ng bagong thermostat.
kung nagawa mo na itong dalawa. observe mo kung hindi nagbabawas ang coolant at hindi na tumataas temp mo. okay na yan.

sa pinaka basic ka muna.. bago mo isipin yung gasket head na matrabaho at magastos
you may leave your contact number Sir, discuss natin. baka makatulong ako. hindi ako mekaniko pero ako gumawa kasi ng oto ko

wala naman problema sa mitsu, toyo, hon, o anumang make ng sasakyan. nasa maintenance lang at kung anong condition nuong nabili ang oto.

[greenlantern818]

@TS - madali lang magpalit ng thermostat mura lang yan. mas okay pa yang mitsu kesa sa hyundai na may katok

[maseraticrg]

di porke nakakuha ka ng mitsubishi na lok-bu , e lahat na ng mitsu e lokbu.. minsan utak mo lang ang lokbu dahil di ka maruning pumili ng kotseng binibili mo, my2cents.. lol

[khirmal]

@TS - madali lang magpalit ng thermostat mura lang yan. mas okay pa yang mitsu kesa sa hyundai na may katok

tama sir. let's help TS

[my_2_cents]

di porke nakakuha ka ng mitsubishi na lok-bu , e lahat na ng mitsu e lokbu.. minsan utak mo lang ang lokbu dahil di ka maruning pumili ng kotseng binibili mo, my2cents.. lol

Ang mahalaga sa lahat NAG-OOVERHEAT ang sasakyan ni TS. Mitsubullsh*t Eww-clipse....

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my_2_cents

[greenlantern818]

@TS - palinis mo yang radiator mo baka madumi na papalitan mo na din yang thermostat sa kanila sa malapit sainyo, madami naglilinis ng radiator sa may Amang rodriguez ave Pasig sa may St. camillus sa may marcos hiway lang yun malapit lang sa marikina. binababa nila radiator kaya medyo matagal 2hrs plus

[bangkeroboy21]

thanks po sa mga advice sirs!
i've been driving it for 2 days na, no thermostat yet (will get a new one, mas maganda nga na mayroon, tama nga kayo sirs, andun nga yun for a reason) steady lang ang init niya, binabasa ko rin ng water yung radiator pag nagpapark ako sa mall etc. just in case. wala naman pong oil mixing, salamat sa diyos. nangyari yun kasi ang ganun sa sentra ko, 60k inabot sa general overhaul (hindi pa casa yun)

i'm also seriously considering getting the radiator cleaned, is it the same po ba as a "Radiator overhaul" i googled around and sabi daw na "SEALED" system ang radiator etc. is it safe to have it overhauled? i tried it before with my aforementioned "sentra" pero kalas na kasi radiator nun at *** mekaniko mismo nagbalik (dun din po sa amang rodriguez) i'm sort of new to this radiator cleaning game and medyo kinabahan ako dun sa part na "sealed" system daw ang radiator, i mean, no offense to anyone po. pero competent naman po ba yung mga nasa amang rodriguez?

also i've observed my small small "froth" dun sa coolant (under the radiator cap) is that normal? i'm kinda paranoid na din

[jan0ng]

Bro kung sigurado ka naman na mahusay ang gagawa, have it cleaned. kung wala kang kakilala na gagawa, bili ka ng bago, surplus pwede rin. wag mong tipirin yung thermostat, kung may OEM yun bilhin mo. Mas malaki ang gastos in the long run kung magtitipid ka..
check for leaks, ibalik yung thermostat, radiator cleaning/replacement, observe then update mo na lang kami.

sya nga pala, parang di ata maganda na binabasa mo yung radiator mo.. parang nabasa ko sa grupo toyota board..

Bro try mo din magregister sa mitsubishi philippines kung merong org na ganyan sa net. mas matutulungan ka kasi may mga kaparehas ka ng oto dun.

[slamm]

also i've observed my small small "froth" dun sa coolant (under the radiator cap) is that normal? i'm kinda paranoid na din

That's why get a compression test done to see if your engine has any real problems or not. If not then put in the new thermostat, replace your coolant (try going to a shop with Lavaramon service to flush the entire cooling system), put in a new OEM radiator cap, then check your aux fan, hoses and belts. If your water pump has never been replaced in the last 80,000kms then it's time do so along with your timing belt.

[Azulbanirpal]

OT question guys, on thermostat metal chamber where rubber hoses are connected to radiator, napansin ko nag oxidize yung metal internals, parang white scaling na 'kalawang' minsan kinakain na yung bakal. Sabi sa akin coolant daw kasalanan nun, I think electrolysis ata yun kaya ganun. Whats the truth?
Any solution to avoid this? TIA.

[my_2_cents]

OT question guys, on thermostat metal chamber where rubber hoses are connected to radiator, napansin ko nag oxidize yung metal internals, parang white scaling na 'kalawang' minsan kinakain na yung bakal. Sabi sa akin coolant daw kasalanan nun, I think electrolysis ata yun kaya ganun. Whats the truth?
Any solution to avoid this? TIA.

Bing and Google can be your friends: Does Your Radiator Pass Inspection?

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my_2_cents

[eprot]

my 0.02 worth.

in the tv series, english mechanics on the cable turbo channel. Jock owner of the motorshop has a test to see if the head gasket of a car is blown. He has a device, that sniffs out hydrocarbons in your radiator overflow tank. In the series, they run the motor and places the syringe like device on the overflow tank, if the chemical changes color, then chance are you have a blown head gasket.

the rational of the test, if you have a faulty head gasket, oil and probably unburned fuel is mixing with your radiator fluid.

[Azulbanirpal]

Makes sense sir, yup leak on radiator by any other fluid aside from water and coolant is an indicator of head gasket problem.
Also talked to US trained mechanic on problem with thermostat housing decay, its electrolysis. Solution is to add grounding on said part.

[bangkeroboy21]

thanks for the advice mga sirs!

UPDATE lang po and a QUESTION...

Napalitan ko na yung thermostat, works fine naman po.

then today i had the radiator overhauled and flushed... apparently andumi na talaga niya, "sludgy" ng kaunti, then kinabit na nung mekaniko, then nilagyan ng tubig for coolant. NGAYON eto po nangyari, i started the engine, we deliberately left the RADIATOR CAP OFF para makita kung umiikot yung coolant etc.

then ang ginagawa ko po, based on past experience (see story at top) ni-rev ko yung makina to see kung bumubulwak. apparently ang nangyari, NAG BUBBLE and FROTH (like cream) yung opening ng radiator. I began to worry, so i checked the TEMP, ok naman below middle pa, I asked the radiator guy kung ano ibig sabihin noon, una sabi niya ewan, then sinabi niya na nag rereact daw yung naiwang coolant sa loob ng engine sa water na nilalagay namin. after 20 mins of IDLING, and pouring water, nawala din naman yung FROTH, then nagcomment yung isang guy, na bumukas na daw yung "thermostat" again, normal parameters pa yung temp. i grew disconcerted, so after driving for a while and parking for 2hrs, i went and tested it again, i removed the radiator cap and revved the engine, thankfully wala naman yung froth. and the temp is normal.

You have to understand, this was my first time, to have a radiator overhauled and flushed... was that normal?

[slamm]

then ang ginagawa ko po, based on past experience (see story at top) ni-rev ko yung makina to see kung bumubulwak. apparently ang nangyari, NAG BUBBLE and FROTH (like cream) yung opening ng radiator. I began to worry, so i checked the TEMP, ok naman below middle pa, I asked the radiator guy kung ano ibig sabihin noon, una sabi niya ewan, then sinabi niya na nag rereact daw yung naiwang coolant sa loob ng engine sa water na nilalagay namin. after 20 mins of IDLING, and pouring water, nawala din naman yung FROTH, then nagcomment yung isang guy, na bumukas na daw yung "thermostat" again, normal parameters pa yung temp. i grew disconcerted, so after driving for a while and parking for 2hrs, i went and tested it again, i removed the radiator cap and revved the engine, thankfully wala naman yung froth. and the temp is normal.

You have to understand, this was my first time, to have a radiator overhauled and flushed... was that normal?

You may want to flush your radiator again after around a month or so of use. Since you're cooling system is sludgy and it was just the radiator that was cleaned, there will still be some sludge left inside the engine itself and will circulate over time. An option to this is to find a shop that does Lavramon services (flushes the entire cooling system).

AFAIK, the bubbles and froth initially coming out is normal since the radiator is pressurize and this pressure is released when you open the cap. Nawawala din dapat yan.

[jason_10]

After you replaced the thermostat, di na ba bumubulwak yung tubing pag ni rev?