Car Temperature

[andiiso]

hey yo ! just a question about the temperature :

today i was waiting for my mum in my car with aircon on (car was alredy warm n been driven n all, just got bak home waitin for mum) and i noticed my temperature gauge slowly rose up above normal quite a bit (first time ever seen this on my car) like it was at operating temperature n all etc then when i sat car there wid aircon on it started rising ..

so then i drove it and it went bak down to operating temperature (on the gauge) but when i stop at lights it starts crawling up a lil slowly, then drive again its goin bak down ..

today was quite a hot day but even so its the first time my car has done this on a hot day .. only thing i came up wid is the radiator needing the cool air while driving and when i stop theres not enuff cool air ?

wat could b the cause of this ?
any help would b good guys, thanks

andiiso

[bodaas]

sombody just post thread in noob section like this, it coulb be same problem.

check the radiator, open the cap when engine is cool down
check whether water colant inside, if empty thats not normal,
it could be water leak, check the hose, check the sealant, make sure there is no water leak, check and change the thermostat

also chech the fan, whether is working or not lol

[Skyline_man]

My dad had the same problem on his car, turned out to be the fan not working fast enough to cool the engine when the car is not moving.

[aaronng]

Your thermostat needs replacement. Do it ASAP.

[andiiso]

thermostat was actually replaced not too long ago, due to it always being partially opened, btw guys, would i have done something accidently with the coolant because on thursday or friday i took off the throttlebody to test something at work and then it leaked a lil bit of coolant out, then i bled the system and filled the overflow bottle bak up a lil, fan n everything ran fine.

the temperature only rose up as the car was not moving wid aircon on, after a bit of driving the temperature was normal and even at lights it didnt go up TOO much just a lil.

mayb just cos today was so damn hot and i had car on for quite a while wid aircon plus a lot of stand still ? ill go get it checked up in anycase tho

thanks all
andiiso

btw anymore input is also welcome lolz dun close it yet.

[aaronng]

Did you run the engine with the radiator cap loosened to let the air bubbles out after you put the throttle body back?

[ATSE]

Andy

Like the guys said, check if your radiator fan kicks in or not and check the connection. Then re-bleed your coolant. How are you re-bleeding it?

Set the heater to max, and wait for the radiator fan to kick in twice with the radiator cap off. Have a cloth handy to absorb any overspill and top up when required. Once this is done re-seal the cap.

If both fail, then replace the thermostat again. Any white smoke coming out of exhaust?

[FAT VTI]

yeah, sounds to me like its your radiator fan.

Buy some jumper leads, and plug your fan directly to your battery, see if it comes on, (only see if it comes on then disconnect from battery.
If it comes on, your fan motor and fan are spinning freely.
I had a similar problem, it turned out to be my fan switch.
It overheated when i was parked or stopped, because no air was circulating through the radiator and my fans were not working.

IMO it sounds like a very similar problem, get your fan checked.

[bodaas]

it looks like the aircond fan doesnt work properly or its fak

[andiiso]

yer, when i bled it i opened cap and had car running wid heater on max and waited for fan to come on atleast twice then i topped the overflow bottle up (very minimal cos i only lost a bit) and theres no white smoke comin out of my exhaust. Im sure the fan was comin on, but i will doublle check it again tmrw, mayb radiator cap not put on properly or something. Maybe broke the cap somehow lolz will have a look at fan aswell at work.

[55EXX]

it normal for it to raise a little during still parking. how much does it go up

[andiiso]

hrmmz less then 1cm mayb 3/4 of the cm or close to half of a cm up, and then stops, doesnt realli keep rising after dat

[aaronng]

Ahh, ok... Did you fill the overflow bottle back up with coolant or water? Did you also top up at the radiator cap?

[gerard]

if your fan is not coming on, check if the connection to the fan thermostat is made. you may have knocked it off during maintenance

[andiiso]

Ahh, ok... Did you fill the overflow bottle back up with coolant or water? Did you also top up at the radiator cap?

i only topped up at the overflow cos i thought bleeding it will get it around and topping up the overflow is enough and i topped it up wid coolant, maybe i should top up at cap aswell while car is cold ?

[aaronng]

i only topped up at the overflow cos i thought bleeding it will get it around and topping up the overflow is enough and i topped it up wid coolant, maybe i should top up at cap aswell while car is cold ?

Yeah, you can just top up at the radiator cap a bit and also redo the coolant cycling by turning on the heater and running the engine until the radiator fan turns on. Check your fan like how the others suggested. I don't think it is the thermostat like I suggested earlier.

[bodaas]

if you topp up colant at radiator cap, before top up check if its empty (i didnt say totaly empty),
normal car usually you dont have to top up colant at radiator cap
enough just fill at the bottle
if its empty,half empty or need refill, it definately something wrong

also try by pressing the hose connection from radiator to engine
listen for water sound, if you didnt hear anything,no water sound its definately a problem
just run through hose,thermostat,fan,seal

dont worry about checking white smoke from exhaust,thats your next problem, if you keep driving the car when overheating.

[FAT VTI]

theres an easy way to check your fan and your thermo switch.
You plug the switches together or something while the car is on.
I cannot remember exact details, the green switches u connect or something.
my mechanic did it and knew it was the thermo switch and fixed the prob in about 10minutes.

[andiiso]

i did the cycling with the heater on and fans turned on twice bfore i considered it done, might go ahead with the fan checking. The coolant under cap and the bottle is both full lolz.

[andiiso]

ok guysd did a quick test for fan not wid any electrical yet, but i left car on widout A/C and waited for radiator fan to switch on and guess wat, the fan when wants to turn on .. it turns like 1cm and stops lolz, so the only way i can drive is to either have cool weather and not have many stops ie.. traffic etc OR have the A/C on constantly to coool the engine, if i get too many stops the temperature goes up lolz since fan aint working, gonna be checkin the eletrical stuff tmrw, and i HOPE its just outta grease or something around fan and cant turn since i sprayed shi3tloads of degreaser and sprayed it down the other day, but other then that highest chances are .. the motor lolz

[aaronng]

Shouldn't have sprayed degreaser and water on the electric motor section... Anyway, get a mech or auto electrician to have a look at whether your fan motor is busted..

[FAT VTI]

mate dont worry too much.

You can drive around with only the a/c fan on, the car should stay pretty cool. It happened to me and i drove around for a day or so, but i didnt want to do any further damage, the temp didnt go above half when the ac fan was on so all good.
It is a good idea however, when u turn your car off if you can leave ur ac fan on for a while. this will allow your car to cool down a bit before u start driving again.
The problem is your fan motor i reckon, its very easy to change, will cost you a bit though.
All you do is take out the top screws on radiator, then there is 1 or 2 more at the bottom, unplug the fan pull the whole thing out, unscrew 1 bolt take out the motor, put the new motor in and complete in reverse order.
HOWEVER, before connecting the new motor, test it by hooking it up using jumper cables to the battery.
Only do this for a few seconds, or else the wires will melt. The fan should turn, also be careful when connecting the fan to the battery, the fan spins fast so dont let it hit anything in ur engine bay, or yourself for that matter.

[andiiso]

ey guys, my fan works lolz, so now only 2 options left which is thermofan switch or the thermostat, and highest chance is thermofan switch, for it to be thermostat itll havta jam up pretty well lolz, and cos my fan tried to move but doesnt it probs my thermofan switch, will probably be changin the thermofan switch over tmrw to a new one and if still like that then i must be quite unluckii with a jammed up 6month old thermostat :( oh and btw with my car it doesnt matter if i turn on my AC or not, it doesnt help cool it much lolz still goes overheat if i sit n idle too long, its cos the ac fan is side by side with the radiator fan/radiator and it doesnt actually cool it in any way except help get rid of some hot air in engine, so it doesnt realli work on my car lolz

[FAT VTI]

nah mate,
Your ac fan will cool your car a bit.
I am still thinking its your thermoswitch.
Som1 on here might know the exact procedure of how to test it (by plugging the switch into something)
but just from googleing it, Try this.
Locate the thermo switch (ITS GREEN!) and should be located on the thermostat google and find the image of its location.
pull it up with pliers (slowly) until the plug comes out, now connect a paperclip , one side to each terminal to complete the circuit.
This should tell you if its the thermoswitch.

Som1 on here must know the proper way to test it, i forgot.

[andiiso]

yer its my thermoswitch (wat i meant by thermofan switch loLz) and i should go test it tmrw so tat i dont change it and realise its my thermostat lolz

[FAT VTI]

Also, If this test proves your fan comes on its the other side of the plug (where the green one plugs into) this is what was wrong with mine.

And, if it comes on, just as a quick test, open your fuse box and change your fan relay with your horn relay, and start the car and that could be the problem ;)
fan relays-$47 oem

[andiiso]

ahkz cheers man

i did a test alredy and the fan comes on so mayb ill go try switch fuse

[bodaas]

ahkz cheers man

i did a test alredy and the fan comes on so mayb ill go try switch fuse

maybe when you replace your thermostat, you didnt do it properly
how old is your car??

[andiiso]

thermostat was replaced like 6months or more ago, and has been fine since, so i doubt will b that unless i did something to it accidently but most likely its the termoswitch my car is 1996 civic

[andiiso]

ok guys, i fixed my car :p after testing the fan, it works, it turns on theres power n all, so there was only 2 options left which was thermostat and thermoswitch but if it were thermostat jammed and not opening, the switch will still detect the heat and turn the fan on but just not enuff cool air to cool the engine since no coolant is getting around so finally the solution was to change the switch, and it worked costed me $55 instead of a wopping 300 or so for a fan motor that wouldnt have solved the problem. Thanks to all that had an input whether it was wrong or right, everyone helped

thanks again
andiiso

so for ppl wid similar problems, check fan by testing, (disconnect the sensor located on your thermostat and stick a split pin in the connector thing that plugs onto the thermostat switch like bend split pin into a U shape and stick in there to connect the 2 sides sorta) If fan doesnt work then most likely its fan motor if it does work then most likely thermoswitch.

[FAT VTI]

quote-
pull it up with pliers (slowly) until the plug comes out, now connect a paperclip , one side to each terminal to complete the circuit.

Was pretty close i reckon :p
Glad it worked out for you, I was pretty sure it was the same problem(thermoswitch) as mine.

[andiiso]

haha yer wat u said ! but u said in more simpler way lolz, yer the thermoswitch shat itself so no fan lolz luckii wasnt fan motor or else woulda been expensive.