explorer P0172,P0174,and P0316 | Ford Explorer Forums - Serious Explorations

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explorer P0172,P0174,and P0316

djhart183

New Member
Joined
January 16, 2013
Messages
2
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City, State
Lowell MA
Year, Model & Trim Level
2003 explorer xls
hey guys,

need some help i have an 03 xls. it shooting a random miss fire and running lean codes P0172,P0174,and P0316. i changed spark plugs and wires. I also did the coil cap, and cleaned the MFA. i noticed that i had a leak in the right rear corner valve cover. is it possible. that oil is get in the manifold? it idles real bad. and lacks power at times.(its worse in reverse). should i replace gasket? and im think may the upstream o2 could be bad cause of the leak. any advice on this would be real grateful.
 






v8 or v6? i think there is a thread about a member who has a similar leak and his valve cover was actually cracked. i would inspect it thoroughly. have you changed the o2 sensors for the lean codes? were the spark plugs gaped correctly?


btw, i grew up in lowell and my family still lives there.
 






its a v6 4.0. i was thinking of changing upstream 02 sensor. the sprak plugs are pre gaped there straight from ford. motocraft premium plugs. no kidding what part of Lowell? I live bye south campus. born and raised here. where do u live now
 












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