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Engine codes P0030, P0130, P0300 and P0303

Tiny
SCLWARD11
  • MEMBER
  • 2011 LINCOLN MKS
  • 3.5L
  • V6
  • TURBO
  • 4WD
  • AUTOMATIC
  • 135,000 MILES
Loss of power, engine sputtering, smell of fuel from the exhaust, engine light flashing. Need to know where the fuel filter is for this model.
Wednesday, February 17th, 2021 AT 3:06 PM

3 Replies

Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
This filter is part of the pump on this vehicle so you don't have a separate external filter.

As for the issue, it appears you have a severe misfire that has damaged the o2 sensors. The two o2 sensor codes (p0030, p0130) are most likely a result and not the cause.

What have you done to address the misfire? If nothing, we need to start with this guide:

https://www.2carpros.com/articles/engine-misfires-or-runs-rough

I would suggest swapping things from one cylinder to another on the other bank. Start with the plug and then the injector. If the misfire moves to that cylinder then that is the issue.

Then we need to check the compression if it stays on number 3.

https://www.2carpros.com/articles/how-to-test-engine-compression

Let's run through this material and go from there.
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Friday, February 19th, 2021 AT 12:23 PM
Tiny
SCLWARD11
  • MEMBER
  • 2 POSTS
I originally suspected coil #3, however the additional symptoms had me a bit concerned that there was other or additional issues. I've had to change an ignition coil on another vehicle and it didn't really misfire unless you had to put it under load. I was also smelling gas in the exhaust that concerned me. I was also going to check the fuel pressure to the rail in case I had fuel filter issues. Of course that was dispelled when you told me that the filter was together with the pump in the tank. I will check the coils to narrow down the culprit. Thanks for the advice.
Steve
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Friday, February 19th, 2021 AT 12:33 PM
Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
Okay. While I don't think the pump or fuel supply is the issue we should check it while you are at it. It is not a bad thing to cross it off the list. Here is a guide to do that. Thanks

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator
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Friday, February 19th, 2021 AT 7:00 PM

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