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Frontier Nissan Frontier/HB/Truck Discussion Forum

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Old 05-28-2017, 04:47 PM
[email protected] bbourn45@gmail.com is offline
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2003 Frontier Crew Cab
Join Date: May 2017
Posts: 1
Default fuel pump issues

Greetings! i am the proud owner of a 2003 Nissan Frontier 3.3 V6 supercharged 4x4 drive. Engine rotates at normal speed but will not fire. i had the fuel pump and fuel sending unit replaced. I assume is good parts. However, today.
i rented a fuel pressure gauge and i rigged the gauge illustrated in the manual. Need less to say i am getting zero psi reading but when i turn the key on the pump can be heard.
I am thinking it is a relay problem but i am not sure where to look for the relay?
Is it possible if the pump can be heard running it will not pump fuel to the engine?
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Old 05-29-2017, 02:04 PM
smj999smj's Avatar
smj999smj smj999smj is offline
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2006 Pathfinder
2003 Frontier King Cab
2003 Frontier KC SVE 4x4
Join Date: Jun 2012
Location: Prospect, VA
Posts: 1,849

If the pump is running, it's not a relay issue. It's possible that the hose became disconnected inside the fuel tank...or the new pump is no good.
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