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I have an engine light on. I have changed all O2 sensors…

Customer Question
I have an engine...
I have an engine light on . I have changed all O2 sensors -purge valve -fuel pump -injectors-and just changed MAF
Now engine sputters when I take off. Please help code keeps saying O2 sensor 1 bank 2 .. o5 Huyndia santa fe
2.7 v6
Submitted: 1 month ago.Category: Hyundai
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Answered in 1 minute by:
12/26/2017
Hyundai Mechanic: George H., Hyundai Technician replied 1 month ago
George H.
George H., Hyundai Technician
Category: Hyundai
Satisfied Customers: 19,077
Experience: Hyundai Gold certified, ASE Master tech 15+ years
Verified

Hello I will help,

Has anyone checked the fuel pressure when you are driving or installed a scantool to watch the fuel trims in the computer?

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Customer reply replied 1 month ago
No
Customer reply replied 1 month ago
No call not working on it at this moment
Hyundai Mechanic: George H., Hyundai Technician replied 1 month ago

Those would be my first checks, it sounds like the pump is failing.

Let me know how I can help you with this

Thanks

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Customer reply replied 1 month ago
Would I have lost pressure on the rails? When changing injectors.
Customer reply replied 1 month ago
How do I repressurize if so.?
Hyundai Mechanic: George H., Hyundai Technician replied 1 month ago

If the O rings leak and you see liquid gas then yes, those are leaking but you need to get a fule pressure gauge or observe the fuel trims to see if the system is losing pressure. A stumble is related to pressure and this vehicle has a history of failing fuel pumps.

Please let me know how I can help

Thanks

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Customer reply replied 1 month ago
Already changed it.
Hyundai Mechanic: George H., Hyundai Technician replied 1 month ago

But have you measured it?

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Customer reply replied 1 month ago
After changing the pump it wouldn't start after fill ups. Changed purge valve. Fixed that. Little while later light came on and won't go off. But no haven't checked pressure.
Customer reply replied 1 month ago
Where are you anywhere near Mansfield Tx?? Need real. help
Customer reply replied 1 month ago
Won't pass inspection. Expires end of month.
Customer reply replied 1 month ago
Never mind and cancel my membership. I am going to take it to a mechanic.
Hyundai Mechanic: George H., Hyundai Technician replied 1 month ago

Sorry I wasted my time responding to your question then..... Merry Christmas

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George H.
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Category: Hyundai
Satisfied Customers: 19,077
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Experience: Hyundai Gold certified, ASE Master tech 15+ years

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