2000 explorer 4.0 sohc codes 171-174 | Ford Explorer Forums - Serious Explorations

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2000 explorer 4.0 sohc codes 171-174

briaco

New Member
Joined
May 7, 2011
Messages
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City, State
palm springs, ca.
Year, Model & Trim Level
2000 explorer
I have these codes 171 & 174 eng running lean and have done some tests.i have done the smoke test for vacuum leaks no leaks! i have new coolant sensors, i have checked fuel pressure and regulator, i cleaned the MAF sensor,
eng wont idle when starting it cold for about a minute, then runs fine.any input would greatly be appreciated . brian
 






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