Overheating

[matthewclay04]

Hi Guys,

My to be VTR is overheating only don 58k miles. The radiator has some kind of blue corrosion on the thin filament. The heat pin goes nearly to red and drops to mid way over and over.

Could this be the thermostat, water pump, or radiator.

Please help guys.

Cheers :P

[doubledavies]

does the pin go above 3/4 roughly?

[Mark51]

try bleeding the system if that doesn't work get a new thermostat

[matthewclay04]

the pin went just to 3/4 of the way and then it drops to half way and carrys on doing that!!

[adz_20]

how much is the thermostat 2 fix have same probs with my VTR....

[hesslevtr]

a thremostate will be less then £10 do it yourself there simple enough todo

make sure you bleed system afterwards

[adz_20]

how do you change thermostate?
and what do u mean by "Bleeding" and how is it done?

[doubledavies]

the pin went just to 3/4 of the way and then it drops to half way and carrys on doing that!!

thats normal, it drops when water passes through the rad as the thermostat opens

mine runs at half but ive just reneved the coolant and bleed the system

try testing the thermostat first

[adz_20]

how do you bleed? any help plz

[hesslevtr]

do a search for coolent bleeding
im sure someone posted a guide

but you fill system with water
start car
open bleed points
blow into expansion tank
wait till only water comes out of bleed points
close bleep points
top up water
put expansion tank cap on

[doubledavies]

got a haynes?

basically undo the bleed screw on the top of the rad and close when all the air has stopped coming out and coolant starts

do the same with the bleed screw on the thermostat housing and in the coolant gallery

[doubledavies]

do a search for coolent bleeding
im sure someone posted a guide

but you fill system with water
start car
open bleed points
blow into expansion tank
wait till only water comes out of bleed points
close bleep points
top up water
put expansion tank cap on


got to use a header tank aswell and run the engine at just over idle to circulate the water

[hesslevtr]

yeah i ment header tank

same thing in my eyes :panic:

[doubledavies]

^ sorry i wasnt not picking

is there a sticky about? thought i read one on here once

[doubledavies]

if the temp is only reaching 3/4 b4 going down i wouldnt really worry too much

can you hear rushing water behind the dash

[hesslevtr]

^ sorry i wasnt not picking

is there a sticky about? thought i read one on here once

dont worry mate didnt take it personally

its been covered a few times and im sure someone did a guide

have a search

[matthewclay04]

if the temp is only reaching 3/4 b4 going down i wouldnt really worry too much

can you hear rushing water behind the dash


no i couldnt hear any water rushing around i will fit new thermostat friday!!!

[doubledavies]

you may not need one

test it first

[adz_20]

aint got a clue where bleed points are?
any clues?
tryed a search all i find is this forum!

[jazzyc]

think there is one just above the thermostate housing, its an allen key fitment. Not sure about the others though sorry.

[m1cksaxo]

the pin went just to 3/4 of the way and then it drops to half way and carrys on doing that!!

mine does that but only if im sitting with the car running, same with my mates vtr, not done anything about it.

[matthewclay04]

the red warning light also comes on so im really not sure what it is im hoping the thermostat. Any ideas?

[DarylVTR]

the pin went just to 3/4 of the way and then it drops to half way and carrys on doing that!!

Mine is the same. It has been in the garage twice and they have assured me this is perfectly normal for my model and age saxo. Mine is a 2000 V reg....

It goes upto 3/4 on motorways and then drops to 1/2 on normaly driving conditions and back upto 3/4 or just over when in traffic.

[matthewclay04]

ok so do you think this is perfectly ok to drive???

[argylefan1985]

i recon so

[doubledavies]

hang on!!! you never said the warnin light comes on

3/4 is normal but not over or the warning light

mine is runnig at under half constanlty normal driving in the cold (its freezing)


bleed ur system and checkthe levels and condition of the coolant

check the thermostat by suspending it in boiling water

[Andy_brown2k]

I know this is an old thread but having problems with overheating and used the search button ;)

My car used to always run in the centre of the temp gauge, recently its been getting realy high, almost touching red but then soon cools to half way

if the temp is only reaching 3/4 b4 going down i wouldnt really worry too much

can you hear rushing water behind the dash

I do hear rushing water behind the dash when i start the car, anyone got any ideas?

Cheers

[dougieph2]

u sed about a blue colour around the radiator fins or sumthing... that would normally b a leakage. if u wnt to play it safe get everything u mentioned replaced including the radiator.