have a 2010 F150 wouldn’t start I change fuse 27 for fuel pump and started , BUT now it runs very rough now what the heck can I do
there is a reason the fuse blew. check the wiring for a cut or chaffing. or it could be the pump is faulty and needs to be changed
Ford F150: Bad Fuel Pump → Symptoms & Diagnosis | Drivetrain Resource (700r4transmissionhq.com)
I’d guess your fuel pump is failing/has failed and drawing to many amps.
What is your fuel pressure while running?