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2001 Explorer, Codes PO171 and PO174

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Old 04-18-2006, 09:59 PM
mileshuff mileshuff is offline
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2001 Explorer, Codes PO171 and PO174

Help me help a friend as I have no knowledge of Explorers.

She is getting error codes PO171 and PO174 and doing some searches it seems many get that error with a leaking elbow connecting to the PCV valve. Does anyone have a quick photo showing what to look for that I could send to her?

I tend to think this maybe her problem as her Explorer runs like crap and she says the A/C duct flips when accelerating which is often a vacuum leak. Maybe fix both problems easily.
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Old 04-18-2006, 10:30 PM
raleigho raleigho is offline
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Same problem on 98 EB. 5.0L. Although it runs okay, the A/C duct vent does the same thing. Along with the same codes. Anyone have any answers for us?
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Old 04-19-2006, 07:22 AM
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