C4 Grand Picasso - Coolant Bleeding Issue

[gouldie]

Hi all

Having a bit of a nightmare, changed the timing belt and water pump over the weekend, bleed the system using past advice for my DS5 but now stuck with the car not going to full temp (half way on the line guage) the cars temp also drops 2 or 3 squares when cruising along it's very erratic!! I've also now change the thermostat but still the same. The hose at the bottom of the radiator isn't getting very hot to me it's only the side closest to the thermostat getting warm. I've put my computer on it and it shows the temp around 88 degrees so it's not over heating, I've bled it 3 times but still no luck any advice welcome

Citroen has no availability till 21st June now so I don't know what to do

[GiveMeABreak]

Is your C4 GP a Euro 6 vehicle? Let me have the VIN if you don't know, as there's a different bleeding procedure if it is.

[gouldie]

Hi vin is VF7**************[VIN obfuscated, can be read by forum staff]

I don't get the bleed proceedures as if I sat there at 2000rpm till my fans kicked in I think my neighbour would come and say something but maybe I'm reading it wrong

[GiveMeABreak]

Ok so the relevant degassing extract for your vehicle is:

Degassing and checking the cooling system

• Fit the charging cylinder, closer and adaptor assembly on the expansion bottle, in the case of draining using the tool for filling by vacuum [01102].
• Open the rod on the filling cylinder.
• Start the engine.

N.B.: The air conditioning control should not operate during this phase.

Keep the engine speed at 1500 - 2000 rpm, up to the second cooling cycle (cooling fan(s) cutting in and out).

CAUTION : Check that there are no coolant leaks.

Degassing and checking the cooling system (continued)
CAUTION: Check that the level of coolant in the filling cylinder is sufficient.

Stop the engine.

ESSENTIAL: Do not remove the filling cylinder while the engine is hot.

• Leave the engine to cool.
• Blank the filling cylinder using the blocking rod .
• Remove the filling cylinder , plug and adapter assembly.
• Check the coolant level when cold.
• Top up the coolant to the "max" level (Cold).

CAUTION: Do not fill the system past the max mark.

Refit and tighten the cap on the header tank.