Hesitation at around 45 to 50 MPH when you go to accelerate
I started getting a hesitation/bucking in my 2001 F150 SCREW 5.4L 96,000 miles. It does it most often when you are barely on the gas at 45 to 50 MPH and then you press the gas to accelerate. It hesitates for a second and then takes off. I have replaced the fuel filter, cleaned MAS airflow sensor, changed transmission fluid and filter ( really don't think it was transmission related, was just time to change the fluid), and I still have the issue. My next thought was a COP and plugs. The problem is that it has not set off the check engine light, so how will I know what cylinder has the misfire? I really hate to change all the COP's because of the expense.