Temperature lights stay on

Questions specifically about a Diesel powered C3 (usually engine or fuel related problems)
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Diesel engine related problems
Think: Diesel engine, diesel fuel system, diesel injectors and glow plugs
My Name: pedroaniceto

Contributor
Posts: 19
Joined: Mon May 05, 2014 10:11 am
Model: C3 2002-2005, Original shape model
Year: 2003 (03)
Engine Size: 1.4 (8v)
Fuel Type: Diesel
Mileage: 80000
Trim Level: VTR+
Gearbox: Manual 5 speed
DPF: Yes

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Hi there! Good morning. After a cracked oil cooler my radiator tank was QUITE messy... :) Right now is almost normal only the coolant level sensor stays on (wich in fact I find quite normal assuming that it's covered by a mess of oil "mud". So I wonder if the sensor gets out of the radiator tank and can be cleaned outside. Do you know it the little thing has a screw or if it is pressed into a rubber thing (sorry about my english). How do we get the sensor out of the radiator tank? Thanks for your help.
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My Name: C3CAR

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Posts: 2661
Joined: Wed May 04, 2011 10:01 am
Model: C3 2002-2005, Original shape model
Year: 2002 (02)
Engine Size: 1.4 (16v)
Fuel Type: Diesel
Mileage: 140000
Trim Level: Exclusive
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: DV4 16-valve diesel (90 PS)
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pedroaniceto wrote:How do we get the sensor out of the radiator tank? Thanks for your help.
Coolant level sensor citroen C3
Coolant level sensor citroen C3
Citroen C3 Coolant level sensor removed from header tank
Citroen C3 Coolant level sensor removed from header tank
It looks like you need to give it a quarter of a turn to release the coolant level sensor from the expansion tank.
coolant sensor C3
coolant sensor C3
My Name: pedroaniceto

Contributor
Posts: 19
Joined: Mon May 05, 2014 10:11 am
Model: C3 2002-2005, Original shape model
Year: 2003 (03)
Engine Size: 1.4 (8v)
Fuel Type: Diesel
Mileage: 80000
Trim Level: VTR+
Gearbox: Manual 5 speed
DPF: Yes

Post

Thank you! I'll give it a try and I will post a picture of the little devil...

Thanks again

Pedro Aniceto
My Name: pedroaniceto

Contributor
Posts: 19
Joined: Mon May 05, 2014 10:11 am
Model: C3 2002-2005, Original shape model
Year: 2003 (03)
Engine Size: 1.4 (8v)
Fuel Type: Diesel
Mileage: 80000
Trim Level: VTR+
Gearbox: Manual 5 speed
DPF: Yes

Post

Hi there again!

After removing the water level sensor and cleaning it, (thanks again for the hint), the light stays on... (Damned!). I wonder if the sensor is malfunctioning, wich is possible (but somehow weird). However, before going to to buy a new one, I tried to test the circuit on the wire connector by shunting the connectors. But I don't know wich wires to shunt. There are 3 cables, a white, a red and a green one. Do you know wich ones to shunt to check the rest of the water level circuit? (In theory If I shunt the circuit I will see the dashboard top indicator off, but I need some more advice on this). Thanks again for your kind help.

Pedro Aniceto
My Name: pedroaniceto

Contributor
Posts: 19
Joined: Mon May 05, 2014 10:11 am
Model: C3 2002-2005, Original shape model
Year: 2003 (03)
Engine Size: 1.4 (8v)
Fuel Type: Diesel
Mileage: 80000
Trim Level: VTR+
Gearbox: Manual 5 speed
DPF: Yes

Post

Ah! I did not made any shunting. My sixth sense tells me that some things can go from bad to worst... :)
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My Name: Arfur Dent

Guru
Posts: 3423
Joined: Sat Jul 23, 2011 3:47 pm
Model: C3 2002-2005, Original shape model
Year: 2002 (52)
Engine Size: 1.4 (16v)
Fuel Type: Diesel
Mileage: 100000
Trim Level: Exclusive
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: DV4 16-valve diesel (90 PS)
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Been thanked: 119 times

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My sixth sense tells me that some things can go from bad to worst...
Yes, it would be safer just to change the sensor if you suspect its faulty, if you don't know how to test it.
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My Name: pedroaniceto

Contributor
Posts: 19
Joined: Mon May 05, 2014 10:11 am
Model: C3 2002-2005, Original shape model
Year: 2003 (03)
Engine Size: 1.4 (8v)
Fuel Type: Diesel
Mileage: 80000
Trim Level: VTR+
Gearbox: Manual 5 speed
DPF: Yes

Post

But I could spare the cost of a sensor if the problem is not caused by it, right?

Another perhaps not so silly question: Do you know if this "error" (water level light indicator) needs to be reset with the OBDC thing? Thanks
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My Name: C3CAR

Guru
Posts: 2661
Joined: Wed May 04, 2011 10:01 am
Model: C3 2002-2005, Original shape model
Year: 2002 (02)
Engine Size: 1.4 (16v)
Fuel Type: Diesel
Mileage: 140000
Trim Level: Exclusive
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: DV4 16-valve diesel (90 PS)
Has thanked: 176 times
Been thanked: 93 times

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pedroaniceto wrote:But I could spare the cost of a sensor if the problem is not caused by it, right?
Yes, there is often no need to buy parts until you have tested the old one. But you can't test the old one if you don't know how it works.

You can either spend money on a Haynes Manual, read up on the circuit diagram, find a multimeter to test it. Or fit one you know works.


pedroaniceto wrote:Another perhaps not so silly question: Do you know if this "error" (water level light indicator) needs to be reset with the OBDC thing? Thanks
The coolant level sensor error does not need to be reset as it clears when the level is corrected.

Are you sure the error you are seeing is the coolant level error?
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My Name: Arfur Dent

Guru
Posts: 3423
Joined: Sat Jul 23, 2011 3:47 pm
Model: C3 2002-2005, Original shape model
Year: 2002 (52)
Engine Size: 1.4 (16v)
Fuel Type: Diesel
Mileage: 100000
Trim Level: Exclusive
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: DV4 16-valve diesel (90 PS)
Has thanked: 311 times
Been thanked: 119 times

Post

C3CAR wrote:Are you sure the error you are seeing is the coolant level error?
On the early models (2002 shape)

For the Diesel engine a coolant system malfunction (including coolant level, but not over temperature) is signalled by flashing of the last bar of the temperature gauge and the warning sound (beep).


Image



Over temperature is indicated by lighting of all the bars of the temperature gauge and a warning sound (beep)



The petrol models don't have the extra 'coolant system malfunction' warning system.
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