How hot is your vt????

[11gothevt11]

hi there
How hot does your vt normaly run?????
Do you have thermosat??
Do you have old radiator???
Mine normal under half way but when weather is 35 degrees its goten upto 3/4
I don't have thermosat and i changed coolant and radiator cap
I need to know as the last thing i want my engine to boil and blow a headgasket

Thanks for your help

[Cúl-Báire]

hi there
How hot does your vt normaly run?????
Do you have thermosat??
Do you have old radiator???
Mine normal under half way but when weather is 35 degrees its goten upto 3/4
I don't have thermosat and i changed coolant and radiator cap
I need to know as the last thing i want my engine to boil and blow a headgasket

Thanks for your help

My VT runs under half; with a new radiator, water pump, thermostat, piping and cap.

[stevoss]

you need a thermostat otherwise your car will EVENTUALLY boil, the thermostat as well as circulating coolant also allows the stop of flow which in turn stops heat soak of the whole cooling system.

to get an exact reading of water temp hold mode and up on the dash controls for 5 sec while starting the car this allows the car to go into diagnostics which has a digital readout of the temp gauge.

[11gothevt11]

you need a thermostat otherwise your car will EVENTUALLY boil, the thermostat as well as circulating coolant also allows the stop of flow which in turn stops heat soak of the whole cooling system.

to get an exact reading of water temp hold mode and up on the dash controls for 5 sec while starting the car this allows the car to go into diagnostics which has a digital readout of the temp gauge.

Macanic told me i don't need a thermostat
I thought they are used only to open up when water is hot
Not having thermosat can make my car boil???

[accentstencil]

Thermostats are there for a reason, so it's a good idea the keep it in. I think the engineers who design these cars would know a little more than your mechanic.

[11gothevt11]

Thermostats are there for a reason, so it's a good idea the keep it in. I think the engineers who design these cars would know a little more than your mechanic.

i agree with you
But is the thermostat only so the car doesn't run to cold ????

[accentstencil]

i agree with you
But is the thermostat only so the car doesn't run to cold ????

Basically yes. Also, in winter when you need your heater you will have problems getting it hot.

[11gothevt11]

not having a thermosat can make car boil????????????????????

[skerik]

My VT runs about 85-89 degrees C.

It has been as high as 105 in city peak hour on a 35degree day.

[11gothevt11]

My VT runs about 85-89 degrees C.

It has been as high as 105 in city peak hour on a 35degree day.

On tem gauge how hot is 89 degrees/105
Have you got a therosat???
Thanks

[stevoss]

yeah as i said not having a thermostat will cause an eventual heat soak (if you didn't catch the meaning Google it) of the radiator which will not effectively cool your coolant and cause it to just keep getting hotter(coolant gets hot to a point before it boils as-well), check your temps as i said and when you get time buy a thermostat from super cheap and gasket then install and bleed from that screw. if you want your car to run cooler then get a thermostat with a lower opening temperature and have the thermos running 24/7 with a bigger radiator.

[bundy_boy]

When you changed the coolant did you bleed the system of air?

You can think the cooling system is full, but boy it can sure hold alot of air in there, you may even need to do it a few times to make sure it is all out.

[rb26dett]

No thermostat is bush mechanics.

[skerik]

On tem gauge how hot is 89 degrees/105
Have you got a therosat???
Thanks

Yes I have a thermostat. All VT's should have a thermostat. I'd be a bit worried if they didn't.

[rb26dett]

A car with no thermostat is usually a car that has overheated and is looking for a cheap quick fix.

[tk55]

not really. the idea of removing the thermostat is so that you don't have to replace it ever again, which cost money and downtime. the thermostat itself is cheap.

but if it really will caused problem, then you better have it on.

btw my vt temp normally sat just below the half mark. but lately i noticed if i get caught in a traffic jam it will go up to just below 3/4. umm... wonder if it's the new engine oil i'm using, 10w-40? i normally used 10w-50 or 15w-50.

edit: i have thermostat and radiator is really old. recent service had the radiator flushed, new coolant and new radiator cap.

[dope505069]

Mine runs a couple millimeters under half and i only have sydney tap water in it runs fine and really hot days like over 30 degrees with acon on it can go a couple of millimeters over half any more is no good i reckon and btw put a bloody thermostat in from experience its the best advice anyone can give u for wat u are saying

[dope505069]

Thermostat is $16.50 from super cheap and $20.50 from repco seal is $2.50 not to expensive compared to wat ppl pay to cool there engine like having a rort mechanic replacing your whole cooling system lol

[dope505069]

And wat do you mean problems getting the heater hot if the thermostat isnt in my understanding was that it will never work with out it in its impossible correct me if im wrong?

[bundy_boy]

In my opinion if your temperature dial goes up at all, even for a second, then there is something wrong with your cooling system.

A hot day should not affect it at all, normal operation temp should be 85 to 95 degrees, then when idling it may reach 104 before the fan kicks in and brings it below 100 again. If its going past 105, and the temp gauge is rising, then something is wrong.

If you have air stuck in your system, it will run hotter but not neccesarily overheat, but still hotter than it should

[accentstencil]

And wat do you mean problems getting the heater hot if the thermostat isnt in my understanding was that it will never work with out it in its impossible correct me if im wrong?

Well if you are driving for a long time in traffic it will eventually heat up, so it's not impossible. The thermostat makes the engine heat up faster but not having a thermostat will not stop the engine from heating up at all.

[11gothevt11]

Thankyou everyone for the info
I will fit a thermosat on weekend

But Just A question
What are the chance's of a car overheating first
A faulty thermosat?? Or not having Thermosat????

[accentstencil]

In my opinion it would be the faulty thermostat Faulty being that it won't open or opens too late.

[rb26dett]

not really. the idea of removing the thermostat is so that you don't have to replace it ever again, which cost money and downtime. the thermostat itself is cheap.

but if it really will caused problem, then you better have it on.

btw my vt temp normally sat just below the half mark. but lately i noticed if i get caught in a traffic jam it will go up to just below 3/4. umm... wonder if it's the new engine oil i'm using, 10w-40? i normally used 10w-50 or 15w-50.

edit: i have thermostat and radiator is really old. recent service had the radiator flushed, new coolant and new radiator cap.

Because your looking for a cheap quick fix because the car has overheated, otherwise why would you remove the thermostat?

[robsgt4]

Lots of reasons for cars to overheat, water pump could be stuffed, radiator or hose' have pin holes, taking your thermostat out is not recommended, so put one back in.

The best way to fix it would be to have your radiator pressure tested, replace all the cooling system hoses and maybe even replace your water pump, not too sure what they are like on the commodores but I had a GT4 Celica that I ended up finding my water pump was shagged, it was that eroded internally that it was almost doing nothing! New water pump and the celica ran cool!