Puretech dangerous fault

Faults and Technical chat for the Citroen C4 Cactus
Post Reply
Cactused
Posts: 115
Joined: Fri Mar 11, 2016 3:26 pm

Puretech dangerous fault

Post by Cactused » Thu Feb 13, 2020 8:34 pm

So had the car for 4 years, put quite a few commute miles on it, 110 Flair 94K with FSH.
Recently it's started using oil - the reason i know this is the problem: i had to do an emergency stop on the motorway; engine fault light came on, stop engine warning appeared on the screen. The engine idled but refused to rev so i was stuck in the overtaking lane with a non-functioning engine.
I turned the engine off, with the hazards on, and it re-started and pulled away ok. But, it's since repeated this scenario under cornering (several times after going round a major roundabout) and left me with no power, having to pull over to the side of the road and re-start the engine. Very un-nerving and not something i want to repeat with my family in the car.
If i fill up with oil the engine light and problem disappears, but it's now using a litre or so every 2Kmiles, which is beyond the service recommendation.
I've decided that i can't keep the car now: it's let me down in several situations and put me at risk . And this is from an engine that won 'engine of the year' i think in 2013? Crazy. Needless to say i'm having to consider a far more conventional commute car that can take the miles. Sad- i love my Cactus, but i'm not prepared to be put at risk by this design fault.

User avatar
thetapeworm
Posts: 55
Joined: Wed Apr 25, 2018 11:01 am
Has thanked: 8 times
Been thanked: 5 times

Re: Puretech dangerous fault

Post by thetapeworm » Fri Feb 14, 2020 4:56 pm

Until you've found out what the cause of the oil consumption is can it be regarded as a design fault?

Don't get me wrong, in this day and age an engine should be able to get up to that sort of mileage without using that amount of oil but if a component is worn / broken then surely it's better to address that than just replace the entire car?

The oil is going somewhere, it's it's not coming out of the engine via a gasket then it's coming out via other means, are you smelling anything or seeing any "smoke" out of the back?

Have you had any diagnostics done?

The symptoms sound sensor related but the oil consumption doesn't tally with that theory.
'16 Flair Edition - Obsidian Black - BlueHDi 100

PeterW
Posts: 97
Joined: Fri Apr 22, 2016 4:36 pm
Has thanked: 6 times
Been thanked: 2 times

Re: Puretech dangerous fault

Post by PeterW » Sat Feb 15, 2020 5:31 am

I got my engine changed at approx. 90,000km when it used too much oil, under warranty as it a known fault on this car.
I got it tested at the dealer, they fill it up with oil and then you have to drive 1000km and they measure the consumption.
CITROEN C4 CACTUS PURETECH 82 S&S ETG FEEL. 2015

Cactused
Posts: 115
Joined: Fri Mar 11, 2016 3:26 pm

Re: Puretech dangerous fault

Post by Cactused » Mon Feb 17, 2020 8:04 pm

thetapeworm wrote:
Fri Feb 14, 2020 4:56 pm
Until you've found out what the cause of the oil consumption is can it be regarded as a design fault?

Don't get me wrong, in this day and age an engine should be able to get up to that sort of mileage without using that amount of oil but if a component is worn / broken then surely it's better to address that than just replace the entire car?

The oil is going somewhere, it's it's not coming out of the engine via a gasket then it's coming out via other means, are you smelling anything or seeing any "smoke" out of the back?

Have you had any diagnostics done?

The symptoms sound sensor related but the oil consumption doesn't tally with that theory.
You're right, i don't know the cause of the consumption. That's not necessarily the fault - it's more that when the low-oil(?) sensor is triggered in an event that has a high g-load the engine goes into idle/limp mode. It's clearly designed to prevent engine damage, but to make it undriveable puts people at risk.
Topped-up with oil it's fine, check engine light is gone, all ok. But it sounds like there is a known issue with high oil consumption. Wether mine is covered we shall see..

PeterW
Posts: 97
Joined: Fri Apr 22, 2016 4:36 pm
Has thanked: 6 times
Been thanked: 2 times

Re: Puretech dangerous fault

Post by PeterW » Fri Feb 21, 2020 7:33 pm

It's in DK but hope you can translate it and it will help you...

https://fdm.dk/nyheder/bilist/2016-12-l ... lieforbrug
CITROEN C4 CACTUS PURETECH 82 S&S ETG FEEL. 2015

Post Reply