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I keep getting code set p1309 fuel rail pressure low under…

Customer Question
Hi I keep getting...

Hi I keep getting code set p1309 fuel rail pressure low under load replaced fuel filter housing assembly , I can control rail pressure with scanner, just wondering if injection pump can lose pressure under extended load

Mechanic's Assistant: Is the fuel filter an external one, or is it inside the tank?

External

Mechanic's Assistant: What is the model/year of your Chevy?

2002 gmc serria

Mechanic's Assistant: Are you fixing your vehicle yourself? What have you tried so far?

Yes just the filter assembly so far

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

Starts fine , does not show any problems until heavy load is applied

Submitted: 6 months ago.Category: Chevy
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Answered in 2 minutes by:
1/9/2018
Chevy Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 6 months ago
Chad Farhat
Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems
Category: Chevy
Satisfied Customers: 5,626
Experience: Owner at Carolina Auto Service & Sales , 20 years Experience in Foreign & Domestic vehicles A6 - Electrical / Electronic systems A7 Heating / Air Conditioning systems
Verified

Hi, I'm Chad. Welcome to JustAnswer. I'm reviewing your question and I will be posting your reply ASAP.

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Chevy Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 6 months ago

what engine , what is the vin#

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Customer reply replied 6 months ago
1gthk231232f150827
Chevy Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 6 months ago

what engine ,4.3. 4.8 , 5.3 or 6.0l

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Chevy Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 6 months ago

that is a yes on your question that pump will losse presuer under load and read correctly with out load

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Chevy Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 5 months ago

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