Help!! water temp rise till 100 when drive more then 80

[peterj]

brothers and sisters pf ZTH, i have 'HOT' problem of my car... my current car is mivec turbo..... set up is similar like other turbo car, with intercooler(smaller size then vr4), proper fueling , and i have installed 3 2 speed fan for my car also.... for normal city drive(drive drive stop stop), i have monitoring the water temp through my hks water temp gauge, the temperature is constant from 80 to 90...... but when i drive highway, even without boosting, when my speed more then 80, the temp rise with my aircon on,even without aircon it rises slowly, i plan to install oil cooler soon but i dun know the actual problems... can any one help pls i dun wan my car without speed and rev cut end up having a water temp cut help

 

[WAJA2003]

normal problem is radaitor stuck abit or headgasket leak air.
most cheap way to try is servis u radaitor lo.
or u FAN flow is right??? flow to engine side?? some sohai foreman no do correct,flow way is to front of car geh.

 

[fct]

first thing to do is to clean the radiator and check the fan working or not.also the direction of the fan blow.

second thing is the thermostat,maybe it already spoilt,mean not open the spring valve fully and the last thing is the water pump.the fin of the water pump will rust and kena 'makan',so when engine high speed no enough pressure created in the engine for water circulation.

 

[NeniNeniBoBo]

Bro, I suggest you to do from cheapest way 1st:
1) Check your water hose whether got linkage.
2) Bring your car to service your radiator by pull out the whole radiator and fully flush, then ask the mechanic to re-alignment your radiator, maybe your radiator fin is bend.
3) Change your water coolant(Motul Mocool, Redline product will be good enough)
4) If your car is without fan shroud, then try to install one for 100% efficiency air flow in via your radiator.
5) Check your fan clutch, it maybe loosen(big possible is this problem)
6) Change your thermostat, maybe is time to go edi....
7) Change water pump.

Or currently have you change to thicker radiator? As I know thicker radiator need more/bigger fan in order to suck in more air. Hope this help~ And do share with us after your problem is solved.

 

[peterj]

my radiator is not dirty at all...... clear water with coolent colour(red) and i use 2 bottle of toyota coolent........ no leak... thermostat function well since i saw water level drop when get hot at the radiator, fan all blow toward the engine not out of it......water pressure i think is also not a problem since the water get flow out of the radiator when i din close the cap to check........ i afraid it might be the intercooler not enough big or because my car without oil cooler... for ur guys information, my car not use long time oledi, i just transplant the engine and redo all the stuff in engine bay........ 1 more things make me confuse is, the hks water gauge show almost 100'c but the ori water temp only goes half... i think that 1 cant be trusted... :hmmmm:

 

[renxun]

the water temp for stock thermostate normally range from 88-94 normal operating temp... if on aircond it will be slightly higher...

unless you have a 68deg thermostate then the operating temp might run around 73deg-80deg wid aircond on...

or if you are very worry, you can take out your thermostate, boil some water and threw the thing in and observe whether it fully opens or it had already jammed halfway..... this is the only simplest DIY thing you can do currently without the need to fork out $ ... but around 98 is normal for your car if your radiator is blocked by your aircond and you on it.... so what you can also do is when you use aircond.. the coolness dont whack till full ...so that it will cut from time to time

 

[egiewan]

Happened to my fren before....his thermostat acting up. Sometimes it works sometimes it doesn't. Changed to a new one. Kautim. His car even funnier, will only overheat when tracking in Sepang...when rempit on highway no problem haha.

 

[peterj]

my coldness only at 2nd step.... some times 1 and a half...... refer to the wira ori aircon........ will an oil cooler help a lot?

 

[kenzo]

flush your radiator and feel the coolant got any oily feeling, and make sure your ur gauge dont have any problem, and yes an oil cooler will help to keep the oil cooled, it could be many things bro, list down whats your car spec, since u said you just transplant rite? =)

 

[peterj]

-4g92 mivec ck turbo hybrid using gsr block
-semi lock lsd gearbox with racing clutch
-low compression supercharge piston and conrod
-AF tune with emanage
-sard fuel regulator
-racing fuel pump
-turbo tdo5h but already upgrade fan to tdo6's fan

and many2 more ... this is those important things i remember

 

[kenzo]

Injectors bro? Anyways, is the water keep finishing in the radiator? any oil feeling on the coolant? possible gasket leak or head surface not level, advise not to drive until its fix =)

 

[peterj]

what kenzo said not happening.... water i check twice a week, only loss a bit after two weeks time..... normal rite? no oil stain at water....... no leak... when yesterday i try drive slowly accelerete till 100.... water temp stop at 93 with aircon on..... :hmmmm:

 

[kenzo]

well 93 degree is normal bro, however can be many reasons, after hard driving it heats up to? or only highway?

 

[rakesh_v6]

80-100 isnt that a normal temp ?

 

[DanzEterna]

cos yr radiator has rust inside....so during high speeds, your water flow are restricted
thus u wont have water recirculating inside your radiator properly.
so, send radiator for service, check whether the head has cracked or not.
or 2nd option, opt for aluminium ones.

 

[ftzone]

what kenzo said not happening.... water i check twice a week, only loss a bit after two weeks time..... normal rite? no oil stain at water....... no leak... when yesterday i try drive slowly accelerete till 100.... water temp stop at 93 with aircon on..... :hmmmm:

If you loss some coolant in your radiator there must be a leak somewhere. When you use pressurized test and find no leaks but still you loose coolant after some sprited driving.. I'd be betting on a leaking headgasket. The gasket leak is not bad just a little and this causes your water temp to rise above 100deg C whenever you drive your car hard enough.

 

[peterj]

i repeat once... no rusting in radiator, water clear, kenzo, hard drive will not rise if only lajak for a few moments, but if drive for longer period, it rises to 100 and i not dare to let it rise again so i off aircon and slow down then it go back.....

 

[DanzEterna]

but how do u know that yr radiator has no rust?
last time i always flush my radiator once a week, water is crystal clear, then 1 day my water temp suddenly shoot up, immediately send to radiator shop, opened it, they said the rust accumulated to the right side......so dont think your water inside is clear doesnt meant that there is no rust.

 

[peterj]

the radiator is serviced b4.. instead, i have not flush the radiator since i put in water and coolent when i start run my new engine... already 1 month time.... if gt rust i think the water is logically wil dirty rite?