Ford “MISFIRE/BUCK” Under Load?! NOT WHAT YOU THINK! (’14 Ex…
A local shop called PHAD in to diagnose this 2014 Ford Explorer that is running “rough” under load.
They say it feels like a classic “FISHBITE MISFIRE”.
They said that there was an “Oxygen Sensor” code stored in memory so they threw a sensor at it, but nothing changed…
Let’s start from scratch, take the Ford on a good TEST DRIVE, and try to reproduce the customer complaint. Sure enough, there is an occasional “bucking” at speed going up a grade under medium throttle.
The Ford “POWER BALANCE” test shows that the truck is running smoothly, even during the “MISFIRE” event.
Using Critical Thinking and Scan Data, I finally prove that the “seat of the pants” diagnosis was DEAD WRONG!!!
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