Stop Engine Overheating

Can anyone advise please.
I have a 13 plate c3 picasso vtr 1.4 petrol.
It has come up STOP engine overheating, the fan is on too .
went to my car this morning , turned key and this came up on the screen and the fan came on too and i hadnt even moved it off my drive, also when i turn the heaters on in the car they are blowing barely warm .
i had the temperature censor changed and it isnt that.
please help.

Hannah123 wrote: ↑Sun Nov 04, 2018 7:41 pm Can anyone advise please.
I have a 13 plate c3 picasso vtr 1.4 petrol.
It has come up STOP engine overheating, the fan is on too .
went to my car this morning , turned key and this came up on the screen and the fan came on too and i hadnt even moved it off my drive, also when i turn the heaters on in the car they are blowing barely warm .
i had the temperature censor changed and it isnt that.
please help.

Hi

It sounds like someone has had a look at this already and changed a sensor. Did they change the right one?

Did the problem arise after the sensor was changed or before?

Did they read any codes with a OBD reader (from here) to see what code brings up the 'STOP engine overheating' message?

the problem was happening so he changed the temperature sensor, obviously that hasnt worked as the problem is worse now, ie the stop engine overheating is on constantly, so is the fan.
i have taken my water cap off today and theres like an o ring loose - is that right ?

Hannah123 wrote: ↑Sun Nov 04, 2018 8:11 pm i have taken my water cap off today and theres like an o ring loose - is that right ?

I think you will need to post a photo of what you are seeing.

Some instructions on how to attach photos are here.

Arfur Dent wrote: ↑Sun Nov 04, 2018 7:55 pm It sounds like someone has had a look at this already and changed a sensor. Did they change the right one?

So they changed a sensor, did they change the right one? and did they refill and bleed the system correctly after?

I dont know about which sensor he changed, all i know is it was the temperature censor.
apparently they were a recall on my car so citroen modified them, that is the one he changed, no he didnt bleed anything, he simply just took the old one off and put the new one on .
the cap i am on about is the cap to where you put water in your car, opened it today and a seal is obviously broken on it.
Will get a new cap for that tomorrow.
it says engine overheating however when i take water cap off water is barely warm .

Hannah123 wrote: ↑Sun Nov 04, 2018 8:59 pm I dont know about which sensor he changed, all i know is it was the temperature censor.
apparently they were a recall on my car so citroen modified them, that is the one he changed, no he didnt bleed anything, he simply just took the old one off and put the new one on .

If you let coolant out of the system when the sensor is removed, it should be topped up and bled to remove any air now in the system. If you don't do this properly you may get overheating errors, but only after a short drive.

Hannah123 wrote: ↑Sun Nov 04, 2018 8:59 pm I dont know about which sensor he changed, all i know is it was the temperature censor.

Unfortunately that doesn't help identify which one it was. You may have two sensors for the coolant and if you change the wrong one it won't fix the fault.

Hannah123 wrote: ↑Sun Nov 04, 2018 8:59 pm the cap i am on about is the cap to where you put water in your car, opened it today and a seal is obviously broken on it.

That is a bad sign, they shouldn't break like that. A new one will help but what damage has been done to the engine if it was actually overheating?

Hannah123 wrote: ↑Sun Nov 04, 2018 8:59 pm it says engine overheating however when i take water cap off water is barely warm .

The cap is not going to make a difference to this, but checking or changing the coolant temperature sensor for the ECU could make a big difference.

Do you know which engine you have in your C3?

If not, PM me your VIN and I can look up the coolant sensors to see what you have.