Peugeot partner 2004 2.0 HDi - Venting the refrigeration system

Question

Hello. I had a problem with the refrigeration system thermostat. After the exchange, adding the fluid for a week, everything worked normally. I had to mount one of the hoses wrongly on the expansion tank (with a plastic lock on the lamp side) because it detached and spat out the liquid. I put on...

yezz · Answer

From what I associate, one vent is located on the thermostat housing, look for it above the gearbox (unless you need to remove the air filter tube) and the other look in the middle of the bulkhead wall on the wires going to the central unit.

tom.tych · Answer

In the photo on the right, a blue cork like from a vent to the wheels? Engine cold or warmed up?

pepe150 · Answer

It can be blue, tip like a cover for a valve. It must be warmed up so that there is pressure in the system. When the thermostat opens, bleed it, just watch the fluid level.

wielecki · Answer

You'd better take a test for CO2 in your system ...

tom.tych · Answer

Hehe I unscrewed the cap. There is actually a second black. I put a screwdriver about 4 cm and I didn't feel anything there. What screwdriver? Is the hex key?

Added after 15 [minutes]:

Do you have any practical test?

wielecki · Answer

Tak.np. such

tom.tych · Answer

Is it possible that for me there are no venting screws, the only thing is these plastic nuts? Because after unscrewing the blue or black cap, air flowed out then liquid. The thermostat opened a few times and I vented too. I am surprised only that the whole system is secured with plastic

pepe150 · Answer

The connection of the hoses to the heater is also plastic. Water pump impellers also make plastic. The tank is also plastic ....

yezz · Answer

Check if the water hoses do not get hard, if they are hard, it may mean that the compression gets into the fluid.

tom.tych · Answer

I will download the CO2 test. Today I covered a 140km stretch where I vented 70km. This cork at the cabin once I unscrewed it spurted liquid, the one at the thermostat and the compensating cork does the trick. I have the impression that when a large circuit opens, it will begin to air. Two large diameter hoses are hard. After venting, they are soft.

Anonymous · Answer

Do not forget that it is a pressure system. At 1.4 bar (this is the number), the hoses will be hard and you will almost always have fluid leaks when you open the cap.
If there is no cessation of fluid through the cork and the level is stable, then everything is probably fine.
Of course, the CO2 test won't hurt.

tom.tych · Answer

That's about this level. It will flood to MAX, I will travel for some time and the level in the tank is at the min or below. I unscrew the cork, let out air and part comes back. When the engine is warmed up, i.e. the thermostat begins to work, carefully unscrewing the cap to bleed it and the fluid in the tank is just under the cap ... The fluid does not decrease 100%. The engine does not overheat and there is no under heating problem. Only this level of fluid ...

Anonymous · Answer

Make up to max. Warm up to fan tripping two and three times and leave to cool. Check the level and top up if necessary. After that, check from time to time, always cold. If the level does not change, then there is no problem.

tom.tych · Answer

At what temperature should the fan turn on? I have tried to catch the moment when it is switched on and failed. Heat it with a screw cap or closed?

Anonymous · Answer

The cap should always be closed (under pressure). Warming up HDI at a standstill is practically impossible. You have to chase it (e.g. a few kilometers in 4th gear at 3500-4000 rpm).

tom.tych · Answer

So I had a good impression that the fan almost does not turn on at all.

Peugeot partner 2004 2.0 HDi - Venting the refrigeration system

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