Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
Hi, My Name is ***** ***** for posting your question to just answer. I am a independent contractor for just answer, and ASE Certified Master Auto Technician with 20 years experience. I am confident we can resolve your problem together.Please remember I don't know your skill level. I can't see, smell, hear, or touch the vehicle. It may take a few back and forth replies to get to a satisfactory resolution.There will probably be some equipment needed for a proper diagnosis. If you are not comfortable with this or do not have any test equipment please let me know ASAP. I also try to give all of the information you may need expecting a positive rating. I am not compensated for my time until you leave a positive rating. Your rating should be based on the service you received.
Do you have a fuel pressure gauge? Where did he get fuel pump?
Did they test his fuel pump or his oil pump? Do you know what brand pump he got at O'Reillys?
The bank 1 sensor 2 high fault could be his problem. I would start by replacing the fuel pressure regulator on the fuel rail.
It is possible the regulator may fix his problem.
That is a precision brand. I would still start with a regulator. They are inexpensive and a regular failure part. pretty easy to change with a pair of snap ring pliers.
If the regulator does not fix I would have fuel pressure tested again. If it is under 55PSI I would replace it with an ACDelco pump.