307 1.4hdi xr failure

We ride with the 307 we bought 2-3 months ago. We are particularly satisfied with its fuel and comfort. However, the vehicle does not work once in a while. It was checked, it was here, the parts were replaced. However, nothing electrical was done. It didn't work again last night. He started working in the morning. What needs to be done? Is it electrical? Of course, it is necessary to take it to an electrician, but it is difficult to find an electrician who is good and will not empty our pocket. Anybody faced such a problem?

If any, what was done by fixing it. Haa meanwhile, the vehicle has been connected to leksia. It was said that there was no problem with the vehicle that was processed.

THANKS,

& nbsp;