http://c4owners.org/ The Citroen C4, C-Cactus and DS4 - everything you need to know about owning a Citroen C4 be it a Coupe, Hatch, By Loeb , C4 Picasso, Grand Picasso (all years) or DS4 en-gb Site Disclaimer | Privacy Policy | Cookie Policy |Contact Details | Car Warranty | Sitemap | RSS Feeds | C4 Insurance | Tutorials | Quick Facts | Used Car Guide | Re Call Info | Offers | Service Reviews | Technical Documents | Error Codes wozzaa@nospam.com (Wozza) wozzaa@nospam.com (Wozza) Wed, 10 Jun 2026 12:41:36 +0000 Wed, 10 Jun 2026 12:41:36 +0000 http://backend.userland.com/rss e107 (http://e107.org) hourly 1 60 http://c4owners.org/plugins/forum/forum_viewtopic.php?248817
New owner here (3 weeks or so).

I have a minor oil leak and uspect a cracked sump.

Purchased an OE replacement Here

Wondering if anyone knows the torque settings for the bolts.

Plastic sump, and I'm assuming an aluminium block mean I dont want to overtighten!

Thanks in advance]]> SkaterStan Wed, 10 Jun 2026 05:40:24 +0000 http://c4owners.org/plugins/forum/forum_viewtopic.php?248817 http://c4owners.org/plugins/forum/forum_viewtopic.php?248810 Ed_c41987 Mon, 01 Jun 2026 11:09:57 +0000 http://c4owners.org/plugins/forum/forum_viewtopic.php?248810 http://c4owners.org/plugins/forum/forum_viewtopic.php?248802 Dazzler_75 Tue, 26 May 2026 11:23:43 +0000 http://c4owners.org/plugins/forum/forum_viewtopic.php?248802 http://c4owners.org/plugins/forum/forum_viewtopic.php?248801 full loaded with screens in head rest DVD player full leather.
18 inch wheels with four tyres less than 1000 miles on them, new rear disk brakes..
Need to remove from front of home....
Oh it is purple...
]]> levi21 Mon, 25 May 2026 04:37:09 +0000 http://c4owners.org/plugins/forum/forum_viewtopic.php?248801 http://c4owners.org/plugins/forum/forum_viewtopic.php?248796 I have a 2006 C4 1.6 HDI. Started to overheat in traffic… *RED STOP* flashes on dashboard. After fitting a new thermostat yesterday, the problem is still there.
Here is what I know: on dashboard, temperature spikes from 3 bars to 6 bars in a split second. Under the bonnet, fan does not come on when engine is getting too hot, so this is the problem. Question is; why doesn’t the fan come on ?
If the engine is running and I turn on the A/C, the fan comes on. If I unplug the sensor on the thermostat housing, the fan comes on. If I piggyback the sensor plug, the fan comes on.
If I am driving the car, even on motorways, the car doesn’t overheat, in fact it runs a 2 bars on the dashboard, but in traffic, where air circulation is reduced, the fan doesn’t come on itself when the engine is getting too hot.
Any advice would be appreciated.]]> Hoop Sun, 24 May 2026 01:33:52 +0000 http://c4owners.org/plugins/forum/forum_viewtopic.php?248796 http://c4owners.org/plugins/forum/forum_viewtopic.php?248794
Completely lost with it all now (it's also worth noting that one of my fuseboxes doesn't look like any of the diagrams)

All help appreciated!

Alan]]> bungle666 Sat, 23 May 2026 04:00:37 +0000 http://c4owners.org/plugins/forum/forum_viewtopic.php?248794 http://c4owners.org/plugins/forum/forum_viewtopic.php?248791 ]]> Newboy2026 Mon, 18 May 2026 13:10:14 +0000 http://c4owners.org/plugins/forum/forum_viewtopic.php?248791 http://c4owners.org/plugins/forum/forum_viewtopic.php?248790 I've just got one of these as a "fixer-upper" to replace my old Zafira which is coming up towards 400,000 miles and needs to be retired soon.

I have worked my way through the electrical issues (that's what I do!) and now it's time for the mechanical and cosmetic work.

On its first motorway drive, there was an annoying rattle which initially sounded up the top of the windscreen.
However on inspection, the bottom of the trim is loose.
The stud part of the fixing is present on the body side, but the socket part is missing from the trim.
I have looked on the parts catalogue, the fixings are not shown separately.
I have found quite an old forum post which says these are not available separately, but I have seen similar trim clips used on other vehicles (just can't remember which) and have tried every way of searching trim fixings to no avail.

Are they really made from Unobtainium, or is there a source available now?

Thanks,

Simon.

]]> sparky Sun, 17 May 2026 04:58:47 +0000 http://c4owners.org/plugins/forum/forum_viewtopic.php?248790 http://c4owners.org/plugins/forum/forum_viewtopic.php?248789
My C4 Grand Picasso 2012 plate was overheating so I have replaced the thermostat which solved the problem but I seem to have created a new problem.

new error "battery charge or electrical supply faulty"

battery was more than 5 years old so I have replaced it first but the error didnt go away, I have also got 2nd hand BSI or BPGA (Not sure what is called but it is like for like) module of ebay and changed it but that also didnt solve the issue

Multimeter check shows battery not getting charged from alternator, I have done voltage drop test on both negative and positive wires and they seem to be ok.

so I have got 3 questions really.

1 - is it possible the alternator to fail even though it was working fine before I started changing the thermostat?

2 - Does the alternator have a dedicated fuse, and if so, where should I look?

3 - is there a decent diagnostic tool for these cars?

Btw I have checked all the fuses that I can find (under the bonnet and underneath the glove box) and they all seem to be ok.

Thanks in advance.
]]> Abaab Thu, 14 May 2026 16:26:15 +0000 http://c4owners.org/plugins/forum/forum_viewtopic.php?248789