Xsara Hdi does not heat

Hello everyone, I write here to share my fault, see who brings some new idea, I have an xsara hdi that does not heat the engine enough and that implies that it does not heat the air of the habitaculus, I put new water pump, new thermostat and new tbn antifreeze but continue Poko A Poko is raising the temperature needle but still does not heat the water or the air and the most curious thing is that the car's refrigeration circuit does not take pressure ... you can open the expansion bottle plug without problem that water does not come the air of the habitaculus ... ideas? Thanks in advance

Hello, look to see what values ​​the thermostat that must be over 89 to 93 degrees, and check that it does not open before that temperature, see that the hot radiator sleeves are hot, both the entrance and the output, also verify that the fan electrovalve is good. Check that the pump works by removing a torn engine ... the habitacle air may not open the control of the heating radiator, but it seems to me that it must be a thing of the thermostat, or that is open, or that it is lower temperature than the standard, look to see to see