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steves1967 · 09-07-2022, 06:28 PM

I keep getting these codes on my LS swap. Its an LQ9 stock other than headers and a cold air intake that I fabbed myself. I'm using the PSI conversions computer and harness. I put a fuel pump in the stock tank, and it's getting 45 psi at the fuel rail. But- it was a cheap pump off of Amazon and I have suspicions that it is the culprit of my codes. The engine has 3/8 supply and return lines.

Do I replace the pump or look to having it tuned?

09-07-2022, 06:28 PM	#1
steves1967 Registered User Join Date: Dec 2001 Location: Manteca, Ca USA Posts: 307	P0174 and P0171 codes I keep getting these codes on my LS swap. Its an LQ9 stock other than headers and a cold air intake that I fabbed myself. I'm using the PSI conversions computer and harness. I put a fuel pump in the stock tank, and it's getting 45 psi at the fuel rail. But- it was a cheap pump off of Amazon and I have suspicions that it is the culprit of my codes. The engine has 3/8 supply and return lines. Do I replace the pump or look to having it tuned? __________________ '71 Chevy 3/4 Ton Longbed '22 Chevy Tahoe RST '67 Firebird- 8 sec street car '24 GMC CC 4x4 Duramax Dually