Subaru forester loosing power while driving

I have a Forester 2003. Few months ago started losing
power while i was driving. Start doing this problems once is
on the road driving. Had 3 check engine codes at the
moment. Fix 3 of them which was an O2 sensor and a
broken cable. Also change spark plugs, ignition coil, fuel
filter, few weeks ago was doing this problem and I take the
car to the mecanic and he was testing the fuel pressure
and told me it was the fuel pump. So i thought that was the
problem, but I change the fuel pump 2 weeks ago and the
problem persist. The car has no problems when it starts,
but after a few minutes driving start losing power, and it
stuck below mph, almost impossible to drive. Right now
doesn't have any codes so I have no idea what can cause
this problem. Also the catalityc converter is new, less than
3 years.