V-10 Trouble Code???
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Senior User
Joined: May 2003
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From: St. Petersburg, FL
V-10 Trouble Code???
On a 2000 f-250 with a V-10, the "check engine light" came on. The truck was taken to an auto parts store to test codes and it said "po171 too lean bank 1" and "po174 too lean bank 2." Any ideas what this could be??
Thanks in advance for any help.
Thanks in advance for any help.
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Joined: Feb 2004
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I just went through those codes on 2 V10s I've purchased in the past 6 months (I'm a wholesale dealer here in AZ). Check 1st for a vacuum leak. The rubber hose (about $20) that goes from the passenger side valve cover crank breather up to the intake tends to split where it does a 90 degree bend right up at the intake. Some have said that EGR sensor (about $50) could cause it too but my most recent truck had a fuel pump that was dropping pressure and had to be replaced ($192pump + $185labor). Good Luck.
Post Fiend
Joined: Jun 2003
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From: NE Texas
Originally posted by Baja Daze
Mark, you were right on!!!! It was a vaccuum leak caused by a crack in the 90 degree bend. Many thanks.
Mark, you were right on!!!! It was a vaccuum leak caused by a crack in the 90 degree bend. Many thanks.
Also, you can't tell by just looking at it - it collapses during acceleration.
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Senior User
Joined: May 2003
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From: St. Petersburg, FL
Originally posted by Big Orn
Also, you can't tell by just looking at it - it collapses during acceleration.
Also, you can't tell by just looking at it - it collapses during acceleration.
Post Fiend
Joined: Jun 2003
Posts: 5,643
Likes: 8
From: NE Texas
Originally posted by Baja Daze
Interesting...Sounds like it needs some re-enforcement in the rubber to stiffen it. It's probably failing from bending fatigue.
Interesting...Sounds like it needs some re-enforcement in the rubber to stiffen it. It's probably failing from bending fatigue.
Baja - I could take mine and put my finger into to and it stretched about 2" after it failed. It was like a balloon.
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