wisper

hi hope someone can help me my c220 cdi 03 plate when driveing at any speed goes in to a limp mode the car wont go over 2000 rpm in gear put it in neutral it will rev over back in gear wony go over 2000 rpm.firstly it blew the low press fuel line out changed the o ring pfc came on the dash screen .So i replaced the fuel filter car still shut down pfc on dash that happened five times ok now. Now it goes in limp mode for about a minute then back to normal been told its the MAF sensor or EGR. Ive cleaned the egr first 75 percent blocked car idle smoother but getting black smoke from exhaust now more than normal still had same problem so i bought a genuine MAF sensor fitted it still the same . also had codes read only faults found cam /crank sensor ,low fuel press due to the pipe blowing out . can you help me please