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P0308 Diagnostic Trouble Code Discussion for November 2019

Cylinder 8 Misfire Detected

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Trouble Ticket Help Requests for DTC P0308
Help Request Posted
2007 Ford Expedition Limited 5.4L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1FMFK20577
P0308: Cylinder 8 misfire. Need some advise from Ford guys on this 5.4l Triton engine. Truck belongs to friend and customer and has 227K on it, has owned truck since new. He left his home the other morning and said he heard a rattle for a brief moment and then ran poorly. Cell came ...
November 07, 2019
1999 Dodge Durango SLT 5.9L Excessive Emissions, Poor Idle Quality, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1B4HS28Z3X
P0308: Cylinder 8 Misfire Detected. Owner requested tune up and knew he had #8 cylinder misfire code. Testing shows engine runs fine in open loop but soon as it goes closed loop the fuel trims begin to pull fuel (-30 short -30 long). The unusual thing is the upstream o2 sensor shows lean the...
November 22, 2019