The Dispatch | Expert | Scudo Hub

Thepoolman

Member

Registered: 2019-01-05

Posts: 70

Coolant light

Hi guya . My coolant light has just started popping on and off, more  on though, but my coolant level is spot on. What should i check next.....
Ive been googling lol. Is there a sensor i can check or replace
Keep it simple for a guy with no skills
Cheers

Last edited by Thepoolman (2022-10-21 11:55:52)

AlvyLad

Member

Registered: 2021-06-11

Posts: 481

Re: Coolant light

Hi guya . My coolant light has just started popping on and off, more  on though, but my coolant level is spot on. What should i check next.....
Ive been googling lol. Is there a sensor i can check or replace
Keep it simple for a guy with no skills
Cheers

Mine was the same and I'm the same as it comes to electrics/mechanics, have "fixed it" after I had some oil in coolant (long story).
Get the expansion vessel (bottle) off I think pliers, flat medium screwdriver and 10mm wrench was needed, (obviously you'll need to disconnect the sensor) make sure you've got absolutely identical sensor and do try to get it out without damaging bottle... mine wouldn't come out, or seized, that I wouldn't want to start getting hammer, drill out etc

Got plastic airsoft shots ("bearings") handful, Fairy, luke warm water, taped up few outlets and kept on shaking until it was absolutely like new on the inside. For the testing purpose, fitted everything back and it was fine, although if parked to the side, light does come up, as it should, binned the sensor since.

OAT

Member

From: Borders/Dales

Registered: 2017-01-03

Posts: 1,013

Re: Coolant light

I recently had an embarrasing experience with my coolant level.

It started during the extreme hot days we had on a day of steep hills followed by motorway.  It started occasionaly flickering and I found I could affect it by lifting or depressing the throttle.  I didn't know what it was indicating as I had never seen it before.  A closer look showed it to look like a shower head suspended over a pool of liquid.

But I already had it in my head that it was oil related due to the hard miles and hot temps.  So I saw it as a typicaly French, surrealist symbol of a sump and oil return.  I know it sounds daft but I was a bit panicked as I had many miles to do in the next few days and had "oil problem" fixated in my brain.

After what turned out to be an unneccissary oil and filter change there was obviously no difference.  After a lot of head scraching I was at the point of cancelling arrangements and taking it in for an oil pressure test.  At this point someone stopped and asked what the trouble was.  As I explained, I turned on the ignition to show the warning light.  "Isn't that your coolant level" he asked!

It has rarely needed a drop in 6 years and didn't even look low when I checked it.  But about 1/2" of water and no more light.

What an idiot!

Thepoolman

Member

Registered: 2019-01-05

Posts: 70

Re: Coolant light

I would describe it as a saucepan lid over water lol.

AlvyLad

Member

Registered: 2021-06-11

Posts: 481

Re: Coolant light

I
Happens to the best of us

"senior moments" is part of growing up, just got to embrace it 

kenbw2

Administrator

From: Preston

Registered: 2017-11-26

Posts: 1,612

Re: Coolant light

When it came on on my old car I'd never seen the symbol before, and I was like "what the hell is that?!"

Obviously many vans later I've had plenty of experience of that light now 

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2000 Citroen Dispatch 1.9TD XUD9 Camper Conversion
1999 Citroen Dispatch 1.9D DW8 Disassembled Camper Conversion
1996 Peugeot 806 1.9TD XUD9 Spare vehicle
1998 Citroen Synergie 1.9TD XUD9 Snapped timing belt

Thepoolman

Member

Registered: 2019-01-05

Posts: 70

Re: Coolant light

So is the sensor the thing on top of the coolant bottle, right side ?

AlvyLad

Member

Registered: 2021-06-11

Posts: 481

Re: Coolant light

So is the sensor the thing on top of the coolant bottle, right side ?

Yes, the one, that senses, if current isn't getting through two points of it right in the middle of the bottle- light comes on. Being extremely dirty ends up as a false reading as if not enough coolant the same.