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Kenny Z.
Kenny Z., Ford Senior Master Tech
Category: Ford
Satisfied Customers: 5505
Experience:  Auto Trans, Drivability and Electrical Specialist
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I changed the plugs and wires on my wife's 2001 Explorer 4.0

Customer Question

I changed the plugs and wires on my wife's 2001 Explorer 4.0 SOHC. It then began to give me P0305 and P0306 misfire on cylinder 5 and 6. I spark tested the plugs and coil, but it checked out good. After clearing the codes, it is now giving me a P0174 lean code on bank 2. I tested and decided to replace the o2 sensor, but with no change. I pulled the upper plenum and checked the injectors which tested good with an ohmmeter. It is running really rough. I also checked a couple of times now for vacuum leaks and found none. I replaced the plenum gasket while I had it off. I also cleaned the MAF sensor. I'm lost now.
Submitted: 2 years ago.
Category: Ford
Expert:  Kenny Z. replied 2 years ago.

Hello, my name is***** and thanks for your question.

Are you certain you have #5 and #6 on the correct coil towers? 456 are offset. Click link below for diagram.