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Re: Codes PO171 & PO174 1999 Ford Explorer
Don't know if you resolved this, but number one suspect is vacuum lines. be sure to check all lines and elbows.
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2000 Nissan Xterra XS
1989 Isuzu Trooper with a mod or 2
1998 Isuzu Trooper 3.5 with a 5-speed with a mod or 2
1985 Chevy K-10 with a mod or 2
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