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Code P0171


klvaleri
03-10-2008, 03:35 PM
Hi Guys,

My check engine light came yesterday when speed above 80 MPH. I took it to auto-zone to get he give this code P0171 and I asked to clear it for me. My rodeo run fine and no CEL come back on. Is any one knows this code is and any idea where should I start work on it? Thanks for in advance.
:banghead: :banghead: :banghead: :banghead: :banghead: :banghead: :banghead: :banghead: :banghead: :banghead: :banghead: :banghead: :banghead: :banghead: :banghead:

amigo-2k
03-10-2008, 05:06 PM
P0171


Fuel Trim System Lean Bank 1


How old are the plugs?

How old is the intake manifold gasket?

Gizmo42
03-10-2008, 07:42 PM
80? Yikes I'd hate to pay your gas bill LOL. Can watch the gauge drop on mine when I go over 65.

With just the one code it could be hit and miss on trouble shooting. Start with plugs. Could be the o2 sensor reading a bit off. Manifold gasket usually has more codes associated with it but not always, could be it. Could also be an injector getting clogged.

2000izusu
03-10-2008, 08:38 PM
thats what all my intake manifold gaskets started with . po171

klvaleri
03-11-2008, 10:00 AM
P0171


Fuel Trim System Lean Bank 1


How old are the plugs?

How old is the intake manifold gasket?

My plug was replaced 80K miles now is 133K miles and manifold still OEM just like I said, it only comes when I run 80 MPH and above, other that CEL never come on if I drive normal. Thanks.

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