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01-20-2024, 11:38 AM
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#1 |
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Registered User
Join Date: Nov 2006
Location: Sutherlin Oregon
Posts: 502
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Fuel pressure
Can anyone tell me what the fuel pressure should be for a 2007 Chevy Classic with 5.3 vin Z? I am trying to fix codes p0172 and p0175. My pressure is 54 psi with engine off and 60 psi with engine running. Running it is bouncing fast. Long term fuel trim is -19.5 both banks. New MAF and air filter. Thanks.
Last edited by PDW HOTRODS; 01-20-2024 at 01:32 PM. |
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01-23-2024, 01:46 AM
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#2 |
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Senior Member
 Join Date: Aug 2005
Location: Los Angeles
Posts: 1,363
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Re: Fuel pressure
Fuel pressure is supposed to be 55-62 psi engine running, and it should not drop more than 5 psi after you turn the engine off for at least 1 minute.
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1967 GMC CM-2500 Camper Cruiser, 351E V-6, NP 435 4 speed, Dana 60, and factory A/C. 2012 GMC K-3500 WT regular cab, 6.0L Vortec, 6L90. |
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01-24-2024, 05:14 PM
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#3 |
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Registered User
Join Date: Dec 2017
Location: Elkhart, Texas
Posts: 1,841
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Re: Fuel pressure
I'd be looking at the pressure regulator and faulty/dirty injectors.. Here's a link for you...
https://www.bing.com/search?q=po172+...CTS&showconv=1 |
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