Thermostat

**nashimoto** · July 23rd, 2015 12:25 PM

thanks po. he said palitan muta thermostat switch and check if kaya na linisin yung thermostat, if hindi na then saka nlng palitan. any idea how much the switch will cost in a honda jazz 2005? thanks!

**rodetor** · July 23rd, 2015 06:24 PM

Originally Posted by nashimoto

thanks po. he said palitan muta thermostat switch and check if kaya na linisin yung thermostat, if hindi na then saka nlng palitan. any idea how much the switch will cost in a honda jazz 2005? thanks!

You may call one their casa dealer branches near you and connect you to their parts department. Since laguna ka nga ba? Kung Laguna ka, or South area, you may ask to call and visit their plant if parts can be purchased over them through walk in customer. Sa casa kasi kapag wala available na parts in their stockroom/storage room. They will acquire it from the plant through order basis. You will deposit 50% of the price for the part. 1 week period, or more so before you can pick up from the casa where you had place your ordered part. I have no idea how much for your model. But mine, way 2008 ago, cost me around P7k++ for that same part. My model was a 1999 SX8 Lxi variant.

For the thermostat valve, the price does not differ from the thermo switch. Have it checked muna, pull it out, then let it dry, then remove scales deposits by a steel brush. You may also like to use mini steel brushes, that are sometimes sell on a 3-in-1 package. How to test it? The thermostat valve. Get a pan, put in some amount of water, let it boil (100°c). Submerged the thermostat valve in the boiling water in a pan for a 3 minutes or so. Get a cooking thongs, lift it. Observed if it contracts (open state) the metal spring. When it does and as the part was pulled out from boiling water, the part slowly retracts the spring as it cools down(closed state). It is still functional and considered to be normal.

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**nashimoto** · July 23rd, 2015 08:30 PM

boss mahirap ata tanggalin yung thermostat? need ba drain coolant ulit from rad?

**jodski** · July 24th, 2015 11:37 AM

Originally Posted by nashimoto

boss mahirap ata tanggalin yung thermostat? need ba drain coolant ulit from rad?

Pwede naman hindi but it will be messy kasi may tatapon na coolant galing dun sa butas.

And if ever you will do this, palamigin nyo muna engine para iwas getting burns. Dahan dahan ang pagpihit para hindi bigla ang pagtulo. Mga less than 1 liter matatapon depende sa diskarte ng mechanic mo

**rodetor** · July 24th, 2015 09:53 PM

Originally Posted by nashimoto

boss mahirap ata tanggalin yung thermostat? need ba drain coolant ulit from rad?

Removing thermostat valve? Hindi naman kahirapan, kung mechanically and systematically inclined ka.

Like jodski said, palamigin mo muna or better yet first day in the morning na hindi pa na warm-up o di pina-andar engine. Para hindi mainit. And no need to drain all coolant in radiator. Yes magkaroon lang ng spill, when thermostat valve was removed or dismounted.

If di mo kaya, have your trusted mechanic do it for you at home.

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**rodetor** · July 25th, 2015 12:37 AM

Originally Posted by nashimoto

mga sir i just replaced my radiator.. sabi ng mekaniko ko pansin nya hindi ikot fan pero kapag nka on na aircon ayun ikot na. pansin nya rin matagal ang interval ng ikot ng fan when aircon is on. sabi nya dapat ikot fan kahit off aircon bsta mainit na makina. i may need to replace thermostat and thermostat switch para sure. all along akala ko normal lang na hindi nag on fan kpg patay aircon.. masama pala yun. kaya sabi ng mekaniko ko mag aircon ako para ikot fan until mapalitan ko yung parts na nabanggit ko kanina. what can you say?

Bago na rin kasi radiator mo kaya matagal na time interval para umikot both fans, and your condenser as you said bago palit na rin di ba. Dahil new radiator and condenser, madali na lang mag-dissipate ng heat, by free flowing air, kaya siguro pansin mo at ng mekaniko mo, matagal ang time interval ng fans na mag-activate. No temp gauge at red light indicator lang to warn you, if it is overheating. Try mo muna paandarin makina mo without aircon ng idle running kahit isa oras o higit pa hanggang mag-lit ang red light, kapag mag-lit na red light indicator at hindi pa umadar ang radiator fan mo, sige, try checking it all with your trusted mekaniko. Radiator fan FUSE, thermo-switch sensor for radiator fan, thermostat valve and Relay for radiator fan. Determine/diagnose mo muna kung may faulty o wala, para to avoid unnecessary buying of parts that is not really needed to be purchased.

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**redone12** · August 3rd, 2015 05:53 PM

nago lang ako dito
ganyan din sabi sakin esi 94 naman

**Heisenberg** · August 3rd, 2015 11:15 PM

Correction lang. Ang nagpapaandar sa radiator fan ay yung thermoswitch na nakamount sa thermostat housing and hindi yung thermostat mismo. Kapag mainit na yung coolant, the switch will short to the ground and cause the fan to run until lumamig uli yung dumadaloy na coolant.

Totoo na mabilis pa ding umangat ang init ng makina (operating temp) sa Pilipinas kumpara sa ibang bansa. Kasi sa ibang bansa mahalaga sa kanila ang Heater. Init ng coolant ang dumadaloy sa heater core so mahalaga sa kanila na mabilis maginit ang makina kasi malamig sa kanila (winter). Pero hindi lang mapabilis ang init ang silbi ng thermostat kaya hindi por que nasa Pilipinas tayo ay hindi na to mahalaga.

Ang isa sa mga purpose ng thermostat ay para ma-maintain ang init ng makina. Aside from that, it also regulates the proper flow. Kahit nakabukas ang thermostat, nakaharang pa din ito partially. Iba ang condition pag WALA kang thermostat.

Halimbawang nasa operating temperature na ang makina at nangyari sayo to:

Kapag nasa highway ka at wala kang thermostat, babagsak ang temperature kasi malamig ang coolant sa radiator (nabobomba ng hangin) at tuloy tuloy itong papasok sa engine block. Same thing pag umuulan.

Kapag naman nasa traffic ka at walang nakaharang na thermostat, maaring magoverheat pa din dahil tuloy-tuloy ang daloy bago pa lumamig ang coolant. Imbes na maghintay sa radiator at mapalamig mabuti, iikot ang hindi napalamig na coolant sa mainit sa makina. This gets worse pag sira ang fan. 100% overheat yan.

Keep in mind and tell your mechanic that thermostats are designed to fail in the open position para maiwasan ang overheating caused by a bad thermostat. Mga Engineers ang nagdesign ng cooling system. Yung mga sensors, valves at switches na nasa cooling system lahat yan may silbi para sa efficient performance.

**nashimoto** · August 5th, 2015 12:34 AM

salamat po sa lahat ng inputs.. so far hindi ko pa masyado na drive yung car ng walang aircon kasi bka ako mag overheat kasi hidni ikot fan. mostly the red indicator na nag overheat na yung car ngyari na sya 3x.. mag kakaiba scenario. pinaka last nung nag punta ako batangas on a stormy afternoon habang nsa startoll ako doing 80 to 100 while overtaking. mejo may karga yung jazz.. sana lang may temp indicator para before pa man sya mag overheat eh maitabi muna sa kalsada.. hidni yung huli na ang lahat at nag overheat na.
so far after palitan rad ko never pa nag overheat.. pero palagi ako nag aaircon.