AC issues

[Costin013]

Hello, first my apologies id I got wrong thread ,

I have a Ford Focus MK 2 break from 2006 and I really need some help if someone experienced or knows.

My AC doesn't work.

AC clutch engages 3 seconds , disengages and 7 second later repeat.

AC relay is good, ac clutch fuse is good , just filled with 600 mg freon so there should not be any lack of freon .

When clutch engages low presure pipe goes down to 6-7 bar, high presure goes to maybe 14 bar.

My wonder is why it keeps trying to engage , and if i move the car it stops even trying 

The cooling fan does not start at all (is a shared one with the engine) . i have also changed the fuse for it , but even so if it did not work my engine would not cool so there woul have been other issues .

 

I have no left ideas to try myself..

to change presure sensors ?

the AC itself can be guilty for the clutch not remaining engaged? , 

Can it be the clutch for not remaining engaged ?

Should the fan start if I turn on the car during a hot day with AC on?