44K Maintenance on 2015 Mustang GT Spark Plugs + 02 Sensors

[MrAjsTech]

Hey guys! So we recently replaced the spark plugs and 02 sensors on Scott's 2015 Mustang GT. For those of you who are not familiar with Scott's car here is a quick rundown: Stainless Power Catted Longtubes, Corsa Extreme 3" Catback, GT350 Intake Manifold with Stock Throttle Body, PMAS, 47LB Injectors, and occasional E85.

Scott was experiencing 0.00 AFR reading on both banks, random misfire codes, and misfire codes on cylinder 2 and 5. We decided to pick up 2 new 02 sensors and 8 new motorcraft spark plugs.

Most likely the E85 is the reason for the 02 sensors going out so quickly. Spark plugs were not bad but fresh plugs is always a good idea and it seemed to fix the issues. Check out the video below!

[ame]

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[jvm051]

Were the bungs for the O2 sensors moved since he runs E85? Pretty well known that in the stock location that the Stainless Works/Stainless Power headers can have issues with the 02 sensors getting water on them and burning out due to E85 being hygroscopic. Angle the bungs on the front 02's or it's gonna happen again.

 

[King Jackmode]

Just gonna go ahead and throw those things in there without antisieze, eh?

 

[Kong76]

Did he have any hesitation in his acceleration that he could feel along with those codes?

 

[MrAjsTech]

Did he have any hesitation in his acceleration that he could feel along with those codes?

The car drove pretty smooth except for a rough idle.

 

[DanielLD]

good oil analysis would have picked up on that.

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