check engine light wont go off
I have a 1997 f-150 w/ 5.4 just turned 90,000 miles. I first blew a plug (#2) out and replaced it with a heli coil and new cop and plug. every few months I have misfire on that same plug and have replaced same plug and coil pack with no luck. still does same thing again everyso often. code PO 302 and light blinks and engine bucks. next, check engine stays on so zi checked and it says bank 2 sensor 2 is bad so I relplaced all4 and then all cats because ford said they werent workin. still checkengine light is on. What next? Im runnin on empty with my ford and after just finishing up a divorce, my wallet is also. so I cant afford to get rid of it yet. any help will be greatly appreciated.