Focus Fanatics - View Single Post - hey yall, help please
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Old 02-14-2013, 10:47 PM   #4
Squareleft
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Join Date: Mar 2006
Fan#: 33224
Location: Olympia, WA
What I Drive: 01 zx3

Posts: 133
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did you replace your thermostat? Also Maybe the CHT sensor.
P0171 If there is no vacuum leak or the pcv hose isnt collapsed that attaches to the manifold then i would be very positive that the MAF is bad.
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