Honda Civic Thermostat & Valve Removal

[teteng]

Good day good Tsikoteers!

Where else can I go to for help with my car but here, so here goes....

I'm using a Honda Civic LXI bought in 1997. In 2004 and 2005, the temperature gauge would just continue to rise until it almost reaches the redline, then goes back down to midlevel after some time. There seemed to be no set pattern when this would happen. Sometimes it does while I'm driving, sometimes days would pass when my drive seems hassle free.

In both instances, the problem was traced to a worn out thermostat and thermostat valve, and these parts were replaced then.

Last Friday, it happened again, and I'm almost sure this time that the thermostat and thermostat valve are worn out again.

When the problem was being diagnosed and fixed previously, some people suggested to me that I would be better off having those two parts removed from the engine altogether.

Has anybody had the same problem with their civic and were successful in removing these parts? Share naman po sila ng experience nila.

Sir Speedyfix and others, your thoughts are highly appreciated.

Thank you very much in advance!!!

[raine]

na check mo na ba rad fan baka mahina na ang takbo or barado na ang radiator mo pa overhaul mo na.

To test
if during high speed tumataas ang temp, and pag bumagal na takbo bumababa rin ang temp, try mo muna pa overhaul ang radiator mo and check thermostat.

if during low speed tumataas ang temp and sa high speed naman bumababa ang temperature, possible cause is rad fan.

wag kang magaalis ng parts like thermostat meron purpose ito kaya nilagay yan as per design, pinagaralan iyan bago ilagay sa kotse mo, wag kang maniniwala sa sabisabi. kailangan mong gawin ay ipaayos ang problema wag mag short cut.

[fcuk_macky]

bossing ask ko na din kc ganyan din ang problema ko sa esi 93 ko..pag mabilis tumataas yung temp nya..bago radiator ko and thermo swith, meron din ako aux fan na plague naka on...ano kaya posibleng sira neto? napa ayos ko ndin yung head gasket nya..help naman po...

[Dieseldude]

bossing ask ko na din kc ganyan din ang problema ko sa esi 93 ko..pag mabilis tumataas yung temp nya..bago radiator ko and thermo swith, meron din ako aux fan na plague naka on...ano kaya posibleng sira neto? napa ayos ko ndin yung head gasket nya..help naman po...

Baka naman normal ang temperature mo. Kung minsan, nagloloko ang temp sender and/or gauge, at nagbibigay ng false reading.

[Dieseldude]

Engine will overheat if thermostat is removed.

[dennis powell]

Engine will overheat if thermostat is removed.

sorry sir but i dont agree with you,thermostat is considered a resistance in cooling system.when the fluid temperature is high enough to weakend the thermo spring (resistance),it open up and release the high temp fluid and flows to radiator to cool down,then the cooler fluid flows back to the engine.how come the engine overheat when there is no resistance in that system.one of other things will be affected if you take the thermostat off,that would be gas effeciency.

[fcuk_macky]

Baka naman normal ang temperature mo. Kung minsan, nagloloko ang temp sender and/or gauge, at nagbibigay ng false reading.

-very alarming kc halos naabot na sya sa redline..me kinalaman kaya yung water pump nun? kc yun nlng ang di ko napapa check sa lahat..

[v6dreamer]

Some tropical and desert countries mechanics sometimes remove the thermostat since the climate is already hot. The coolant flows better w/o constricting it and the hot climate helps bring the engine to peak temperature. Engine run efficiently when they are at thier proper operating temp., and again IT WILL NOT OVERHEAT the engine.

[userfriendly]

To check if you t-stat is ok:
1. Remove it and put it in a pail of water preferably with a thermometer. You can tie it to a wire or string or use tongs to pull it out.
2. Heat the water.
3. Watch the t-stat, it should open. Note the temp when it opens and check vs the rating marked on the t-stat body.
4. If it fails to open, replace it.

Note: Be sure the engine is cold before doing any work. If the t-stat is already open when you remove it, replace.

Macky,

Check if you have oil in your water/coolant.
Check you oil is it milky colored
Do you lose coolant?
Try replacing your radiator cap if you haven't done it yet, its cheap
Check your fan belts may be lose or damaged
do you hear boiling sounds
how does your exhaust smell
ask a mechanic to check your water pump

[v6dreamer]

Good day good Tsikoteers!

Where else can I go to for help with my car but here, so here goes....

I'm using a Honda Civic LXI bought in 1997. In 2004 and 2005, the temperature gauge would just continue to rise until it almost reaches the redline, then goes back down to midlevel after some time. There seemed to be no set pattern when this would happen. Sometimes it does while I'm driving, sometimes days would pass when my drive seems hassle free.

In both instances, the problem was traced to a worn out thermostat and thermostat valve, and these parts were replaced then.

Last Friday, it happened again, and I'm almost sure this time that the thermostat and thermostat valve are worn out again.

When the problem was being diagnosed and fixed previously, some people suggested to me that I would be better off having those two parts removed from the engine altogether.

Has anybody had the same problem with their civic and were successful in removing these parts? Share naman po sila ng experience nila.

Sir Speedyfix and others, your thoughts are highly appreciated.

Thank you very much in advance!!!

The purpose of thermostat is to get the engine up to maintain the optimal temp., w/o it can cause you too much gas since your car is lot cooler. Do not remove this into the cooling system.
You should find out the temperature of the thermostat that was originally installed in the car (ask your honda parts dealer)and stick with that and make sure to replace the the old coolant w/ fresh 50/50 coolant.

[teteng]

Raine, thanks for being the first to reply. Driving speed has nothing to do with the overheating. It's quite unpredictable and intermittent when it happens. Today for example, I drove Makati - Marikina - Makati without a problem, whereas last Friday, I barely drove a block when it occurred (although the car was idling at the parking lot for some time), and the temperature dropped by itself while the car was idling by the roadside.

V6Dreamer, thanks. Ganun pala downside pag tinanggal, tataas gas consumption ko? Actually natataasan na nga ako sa consumption nya ngayon e. About the coolant.... I guess I'll have to check my user's manual and record kung gaano ba kadalas ito, but I'm sure more than 2 years na.

Userfriendly, that's the procedure we did at the shop when my thermostat was replaced for the second time, hindi lang kami particular sa temperature readings then. Thanks!

Thanks for the replies all, please keep them coming if there are still some areas not covered.

Nga pala, aside from increased fuel consumption, could there be any other ill effect if these parts are removed (parang nagka-appendicitis kotse ko kung nagkataon)?..... Not that I'm rich, baka lang pumuro ako sa lotto one of these days.... hehehe....

Salamat po ulit!!!

[yapoy86]

The engine cooling system has 2 electronic components 1: Temp Sending Unit and 2: Thermostat; Temp Sending unit main function is to indicate the temperature to your gauge, this is resistive type, when temperature increases, the resistance reading will be approaching to "closed" state, when cold it is in "open" state; Thermostat main function is to control your radiator fans, if you will observe, your radiator fans "start automatically", when the engine is cold, the fans will not start so that the engine will reach the optimal operating temp faster.. but when the engine reached temperature higher than the "optimal operating temp" the fans will automatically to cool down the system.. These parts are installed in the position that will not impede the circulation of engine coolant..

I advise to have your radiator checked for accumulation of dirt or blockage..

A good running engine will not overheat easily, I had a mazda 323 before that i forgot to refill the coolant reservoir and forget to check the radiator for 6months of everyday usage.. When one day I remembered to check it, the water from the coolant reservoir is already dried up and the water level inside the radiator is already half from the radiator cap... still my temp reading is still in normal and no overheating was experienced