P code P0171
Postmaster
Joined: Jan 2009
Posts: 4,584
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From: Chesapeake, Va.
The first thing to check is the 90* vacuum connections at the intake manifold, the one at the rear of the manifold is the most likely problem. They usually come apart in the inside of the elbow. Autozone has the part in the "Here's Help" section.
Postmaster
Joined: Jan 2009
Posts: 4,584
Likes: 3
From: Chesapeake, Va.
If it was the elbow you might want to replace any others, especially the 1 at the rear of the intake manifold.
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red85k100rs
1997 - 2006 Expedition & Navigator
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Mar 12, 2013 02:23 PM
