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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: 6 months ago.Category: Hyundai
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Answered in 1 minute by:
12/26/2017
Hyundai Mechanic: George H., Hyundai Technician replied 6 months ago
George H.
George H., Hyundai Technician
Category: Hyundai
Satisfied Customers: 19,277
Experience: Hyundai Gold certified, ASE Master tech 15+ years
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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 6 months ago
No
Customer reply replied 6 months ago
No call not working on it at this moment
Hyundai Mechanic: George H., Hyundai Technician replied 6 months 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 6 months ago
Would I have lost pressure on the rails? When changing injectors.
Customer reply replied 6 months ago
How do I repressurize if so.?
Hyundai Mechanic: George H., Hyundai Technician replied 6 months 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 6 months ago
Already changed it.
Hyundai Mechanic: George H., Hyundai Technician replied 6 months ago

But have you measured it?

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Customer reply replied 6 months 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 6 months ago
Where are you anywhere near Mansfield Tx?? Need real. help
Customer reply replied 6 months ago
Won't pass inspection. Expires end of month.
Customer reply replied 6 months ago
Never mind and cancel my membership. I am going to take it to a mechanic.
Hyundai Mechanic: George H., Hyundai Technician replied 6 months ago

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

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