Cylinder 6 Misfire

[kehvin]

Backstory: Car has been running fine and I finally had time to get my DME unlocked. While my ECU was sent out, I installed the BM3 Flex Fuel Kit and waited for my DME to come back. After installing everything, I decided to flash the customrom map and the car felt way too shaky so I checked the logs. It seems cylinder 6 is misfiring even though everything was fine before. Any info would help.
Mods: AA Downpipe / Armaspeed CAI / BM3 Flex Fuel Kit / Unlocked DME

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[kehvin]

After more reading and researching, it's probably my spark plugs that I'm going to change out.

 

[Baldmonkey22]

Is the coil pack plugged in all the way on #6? if so swap it with 5 and see if the problem follows?

 

[kehvin]

Is the coil pack plugged in all the way on #6? if so swap it with 5 and see if the problem follows?

With the install of BM3’s Flex Fuel Kit you had to unplug the connection on cylinder 6 but I will try this. Have to buy the E8 torx to get it out either way. Ordered the spark plugs just incase cause I’ll need them eventually or if what you said doesn’t work.
Thanks for the help!

 

[kehvin]

Update: Tried a variety of things including the help of Bootmod3. They are closed now so I am here asking for more advice.

Through my findings, flashing back to stock made the car not start up. This was weird because with CustomROM Stage 2 flash, the car started up. Customrom Stage 2 flash made the car very shaky as mentioned before with the same codes from the original post.

Maybe if I plug cylinder 6's electrical connector back in, I thought it might do something different. To my surprise, it did. The car started up and wasn't shaky. Although a drivetrain message did pop up, I drove the car around my neighborhood just fine. Keep in mind, I tried with Stock Map & CustomROM Stage 2 Map, and only Stage 2 worked.

I'm curious though since BM3's Flex Fuel install video said to keep the electrical connection for cylinder 6 to be unplugged. Did anyone leave the plug installed or uninstalled?

Screenshot of codes listed when the car was able to drive with the drivetrain warning.

 

[razorlab]

Have your tried disconnecting the flex fuel wiring? Might be worth it for troubleshooting.

When I was doing some CANbus install stuff, the car did some funky stuff when I had things connected incorrectly.

 

[kehvin]

Have your tried disconnecting the flex fuel wiring? Might be worth it for troubleshooting.

When I was doing some CANbus install stuff, the car did some funky stuff when I had things connected incorrectly.

This is my plan next to see if the flex fuel is the problem.

 

[Baldmonkey22]

Wait so you left #6 unplugged?


if so how do you think that coil is going to fire?

 

[kehvin]

Wait so you left #6 unplugged?


if so how do you think that coil is going to fire?

Thought the same thing when watching the video of the install process. They left it unplugged I’m guessing since they never mentioned to replug it.

 

[calmeda1]

 

[Baldmonkey22]

Thought the same thing when watching the video of the install process. They left it unplugged I’m guessing since they never mentioned to replug it.

They forgot to mention it i just read their instructions, all 6 have to be plugged in..

probably had you unplug it for more room to work on the HPFP...

 

[kehvin]

They forgot to mention it i just read their instructions, all 6 have to be plugged in..

probably had you unplug it for more room to work on the HPFP...

Yup, I plugged in all 6 and the only problem I have now is the drivetrain error.

 

[kehvin]

Fixed the problem. Decided to check all the wires and basically do a reinstall to make sure everything was connected.

Thanks for all the help everyone!

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