Loss of coolant

Sparkie

Angling Adict.
Sep 25, 2009
2,541
779
Middlesex
So turned the car over yesterday.
Temp warning light comes on beeping etc.
Pop the bonnet to find coolant level is below min level.
No signs of loss.
Top it up run the car.
Thermostat opens and fans kick in
Can’t see any signs of a leak anywhere. Bone dry.
I’m slightly weirded out as my coolant level never moves.
Last 2 drives were 3 miles.
Before that it was at max level.
So I’m confused anyone have this happen?
The only thing that’s been done to the car recently was a silicone hose to charge pipe was changed.
Nothing to cause this though.


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andycupra

status subject to change
when you say it was at max previously, was this on a cold engine?
the level will be low when cold, and high when hot.
This time of year when we get colder ambient temperatures we get a fair number of people reporting alarms for low coolant, when in reality its often just a little lower as it colder.
You say you have topped it up after the alarm, if its maintaining this level over a period of time (need to check like for like, eg always when its cold) then there likely isn't an issue.
 
Last edited:

Sparkie

Angling Adict.
Sep 25, 2009
2,541
779
Middlesex
I was wondering. If the temps outside would play with levels. I’ll keep an eye out for a while and monitor it.
As to sensors I don’t think they are relevant as it’s physically dropped in the bottle.


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mty12345

Active Member
Jun 17, 2011
3,727
450
bristol
Had a leak a while back that i couldn't find, turned out me flange was dripping!! :whistle:

Was the one by the CTS and it was running down the block onto the gearbox, so you couldn't see it on the floor until a lot had built up.
 
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bigT's lcr

Delete. Beat. Repeat...
Feb 27, 2016
1,216
731
Leeds
Had a leak a while back that i couldn't find, turned out me flange was dripping!! :whistle:

Was the one by the CTS and it was running down the block onto the gearbox, so you couldn't see it on the floor until a lot had built up.
Ive been told to get the ally flange replacment before. Thi k the sets only 20 quid
 
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Sparkie

Angling Adict.
Sep 25, 2009
2,541
779
Middlesex
So now I have excessive coolant in bottle. Engine seems to have coughed up the missing fluid.
Totally confused now.


Badger5 Custom Map + TIP,
3”Custom exhaust, FMIC, Bosh 550’s, BC Coilovers, ARB’s +loads more.
 

CPTHEBOY84

Active Member
Sep 24, 2019
27
6
SCOTLAND
So turned the car over yesterday.
Temp warning light comes on beeping etc.
Pop the bonnet to find coolant level is below min level.
No signs of loss.
Top it up run the car.
Thermostat opens and fans kick in
Can’t see any signs of a leak anywhere. Bone dry.
I’m slightly weirded out as my coolant level never moves.
Last 2 drives were 3 miles.
Before that it was at max level.
So I’m confused anyone have this happen?
The only thing that’s been done to the car recently was a silicone hose to charge pipe was changed.
Nothing to cause this though.


Badger5 Custom Map + TIP,
3”Custom exhaust, FMIC, Bosh 550’s, BC Coilovers, ARB’s +loads more.
My coolant temp sensor was leaking . Couldnt see where a was loosing it from till a done n249 delete an noticed crystallised stuff all over pipes

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