2002 E250 Throwing P0175
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Mountain Pass
Joined: May 2006
Posts: 102
Likes: 1
2002 E250 Throwing P0175
2002 E250 5.4 about 69K miles. Check engine light came on, throwing code P0175 Bank 2 system too rich. Runs pretty good, but on two different occasions it has stalled after coming to a stop, starts right back up. Can smell gas at exhaust pipe.
So far:
Hooked up a fuel pressure gauge, indicated 31 PSI while running. Vacuum removed from regulator showed 41 PSI running. No gas from Regulator vac line. Regulator appears ok. After shutting off the vehicle the fuel pressure climbs to about 38 PSI and stays there for about a half hour, then starts to fall back down around 30 psi and stays there for about 10-15 minutes. I don't suspect the check valve at the fuel pump as I understand that the psi would drop quite quickly? Also, do not suspect leaking injector as the fuel pressure stays around 30 psi for a good 10-15 min after it comes down from its initial increase post shut down.
I'm learning as I go, and I despite multiple searches I have not been able to find a whole lot as it pertains to the P0175 code. Any other ideas? I appreciate any help! Thx
So far:
Hooked up a fuel pressure gauge, indicated 31 PSI while running. Vacuum removed from regulator showed 41 PSI running. No gas from Regulator vac line. Regulator appears ok. After shutting off the vehicle the fuel pressure climbs to about 38 PSI and stays there for about a half hour, then starts to fall back down around 30 psi and stays there for about 10-15 minutes. I don't suspect the check valve at the fuel pump as I understand that the psi would drop quite quickly? Also, do not suspect leaking injector as the fuel pressure stays around 30 psi for a good 10-15 min after it comes down from its initial increase post shut down.
I'm learning as I go, and I despite multiple searches I have not been able to find a whole lot as it pertains to the P0175 code. Any other ideas? I appreciate any help! Thx
More Turbo
Joined: Apr 2014
Posts: 660
Likes: 7
From: Central NJ
Here's a list that I came up with after a check search:
- Faulty front heated oxygen sensor
- Ignition misfiring
- Faulty fuel injectors
- Exhaust gas leaks
- Incorrect fuel pressure
- Faulty Mass Air Flow (MAF) sensor
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JR_F350
1987 - 1996 F150 & Larger F-Series Trucks
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Jul 14, 2012 07:07 PM
