Recent content by peterbs
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Rough idle? P0171, P0174? Here's what you need to check first!!!
p0171 p0174 PCV 90 elbow deformed w/ hole I had both codes p0171 and p0174 on my 99 expedition 5.4 liter. Cleaned my MAF, but codes came on again. Ordered the non heated PCV hose, not realizing I had the one with a Y right off the PCV valve. I should have listened for the noise first and...- peterbs
- Post #62
- Forum: 1st Gen Ford Expedition Engine & Performance
