new overheating scenario

[milesaldrich]

i am just wondering what my car problem is. My car temp goes high when I replaced my thermo switch but when I make my fan always on then I have no problem(rekta). I just replaced my thermostat with a new one. replaced my fan motor, overhauled my radiator. any other parts?

[LNopal]

i am just wondering what my car problem is. My car temp goes high when I replaced my thermo switch but when I make my fan always on then I have no problem(rekta). I just replaced my thermostat with a new one. replaced my fan motor, overhauled my radiator. any other parts?

you did the best possible solutions, yet it is proving that is not the issue. now, you have to look into is your radiator cap. does it have oil residue or does it smell like oil? if it does, you have a blown headgasket. you have to remedy that immediately, otherwise it will cause you more issues. how about your reservoir? palagi bang puno? if yes, then it ***might** be a blown head gasket as well. it means that the pressure is too much in the radiator, it is not allowing the water to go back for into your radiator.

you must also check your radiator for leaks, and the water pump. worse case scenario, you have to replace your head gasket. it will be costly - and if not done correctly, it will be more.

[silverworx]

i am just wondering what my car problem is. My car temp goes high when I replaced my thermo switch but when I make my fan always on then I have no problem(rekta). I just replaced my thermostat with a new one. replaced my fan motor, overhauled my radiator. any other parts?

Did you checked the fuses and relay sir?

[sleepsus]

i am just wondering what my car problem is. My car temp goes high when I replaced my thermo switch but when I make my fan always on then I have no problem(rekta). I just replaced my thermostat with a new one. replaced my fan motor, overhauled my radiator. any other parts?

is the new thermo switch working and of the correct rating for your engine? it may be faulty and not automatically turning on the fans when it should.

with your A/C off, run your engine at fast idle for about 5 minutes then observe for a couple of minutes more and see if the fan automatically turns on and off.

if it doesn't then your thermo switch doesn't work.

did you also bleed/burp your cooling system? could be air bubbles.

[milesaldrich]

thanks for your replies mga sir. To give you more info regarding my problem. I experienced hightemp before so with my reservoir hitting the topmost level with water - of the reservior bottle but when i replaced my thermostat then that solves the problem. Until now I am using my car everyday and to long drive but the thing is nakarekta fun ko. with this, i am not experiencing any problem with the car. no water loosing inside my radiator and so with my reservoir. No sign of HG I guess like oil in my radiator issues. No white and black smoke so far. The only problem is my fan na rekta and Im sure my radiator motor is not designed to work like that. So I decided to buy a new thermoswitch but it doesnt work. umaangat tempko. huhuhu pls help

[1997]

How about your thermostat valve?

[sleepsus]

thanks for your replies mga sir. To give you more info regarding my problem. I experienced hightemp before so with my reservoir hitting the topmost level with water - of the reservior bottle but when i replaced my thermostat then that solves the problem. Until now I am using my car everyday and to long drive but the thing is nakarekta fun ko. with this, i am not experiencing any problem with the car. no water loosing inside my radiator and so with my reservoir. No sign of HG I guess like oil in my radiator issues. No white and black smoke so far. The only problem is my fan na rekta and Im sure my radiator motor is not designed to work like that. So I decided to buy a new thermoswitch but it doesnt work. umaangat tempko. huhuhu pls help

So does it turn automatically on and off?

[j_dipad]

thanks for your replies mga sir. To give you more info regarding my problem. I experienced hightemp before so with my reservoir hitting the topmost level with water - of the reservior bottle but when i replaced my thermostat then that solves the problem. Until now I am using my car everyday and to long drive but the thing is nakarekta fun ko. with this, i am not experiencing any problem with the car. no water loosing inside my radiator and so with my reservoir. No sign of HG I guess like oil in my radiator issues. No white and black smoke so far. The only problem is my fan na rekta and Im sure my radiator motor is not designed to work like that. So I decided to buy a new thermoswitch but it doesnt work. umaangat tempko. huhuhu pls help

radiator fan ko naka rekta din. so far so good.2 years na.gumagana pa din naman, malakas pa ikot ng fan.

[milesaldrich]

again thanks for the replies guys. yes I already burp my radiator. when i activate my thermoswitch, as if there is nothing wrong, my fan will shut off and switch on as the normal way.

[milesaldrich]

i went to servitek yesterday and they used a testerlike gadget to test if my radiator fan switch on on the right engine temp and accordng to the mechanic, my fan works fine, so with my cooling system. he told me that the problem is in my aircon. the cause of my overheating is in the aircon he added. what do you think?

[smooth]

agree with headgasket. please have that checked. also, i would get a new radiator instead of overhauling. workmanship may not be up to oem specs. last, have you checked your waterpump?

[dr. d]

i went to servitek yesterday and they used a testerlike gadget to test if my radiator fan switch on on the right engine temp and accordng to the mechanic, my fan works fine, so with my cooling system. he told me that the problem is in my aircon. the cause of my overheating is in the aircon he added. what do you think?

you have two aux fans. one is controlled by the engine thermostat, and the other is controlled by your aircon.
with the aircon off, only the engine fan can cool your engine. once this fails, engine overheats.
with the aircon on but engine fan out, the aircon's aux fan alone may be able to cool both your aircon and your engine during shorter trips, especially in cooler weather.. but you will overheat during longer trips and in hot weather.
if your aircon fan fails but your engine fan is ok, you will overheat during longer trips with aircon on. but with aircon off, you won't overheat
with both fans out, you overheat easily.
btw, slow fan rpm is also defined as fan failure, as these fans normally blow strong air .. slow fan rpm is equated with no rpm at all.
and to make it more confusing, some models have the engine thermostast controlling both engine fan and aircon fan...
a headgasket leak will probably result in a leak of coolant liquid.
i seem to remember a similar thread some time ago..in that instance, it was traced to a defective sensor.. i wish i could remember more..

[milesaldrich]

thanks for that very nice explanation sir

[milesaldrich]

I noticed that may aircon and radiator fan kicks at the same time. is this normal? when my radiator fan kicks on, my aircon fan also kick on. so with if my radiator fan kicks off, my aircon fan also kicks off. I thougth there is something wrong here. Please help

[milesaldrich]

for more info my car is civic vti 2002. Please help.

[sleepsus]

I noticed that may aircon and radiator fan kicks at the same time. is this normal? when my radiator fan kicks on, my aircon fan also kick on. so with if my radiator fan kicks off, my aircon fan also kicks off. I thougth there is something wrong here. Please help

thats normal. on my 97 accord it's the same.

two things :

1) the thermostat may not be opening at the right temp, try removing it temporarily and observe. and get a high quality if not original thermostat. don't cheap out on parts like these.

2) if the above checks out ok, i think your thermoswitch isn't turning on the fans when it is supposed to. that or mahina na yung fan motors mo.


also replace your rad cap with a high quality if not original one for good measure.

did you also have your AC checked for high pressure?

[milesaldrich]

sir sleepsus thanks for your reply. i bought an oem thermoswitch and thermstat few weeks ago. I am interested with that AC check for high pressure. How was that? any reputable aircon shop here in paranaque?

[sleepsus]

No idea of a reputable shop in paranaque as im not from there. but there are many around.

[rvn29]

change the sending unit..

[chrisreyes3]

i have the same problem... nag overheat honda civic 1996 ko... naubusan ng tubig ang radiator.. may idea po ba kayo kung how much papalit ng head gasket... paranng may oil kc na nasama sa tubig sa radiator... tnx...