Recent content by peterbs

  1. P

    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...
Top