97 Explorer 4x4 4.0L SOHC
Join Date: Aug 2010
Location: Salem, Oregon
Code P-0171 / P-0174
The check engine light came on in my 1997 ford explorer 4.0L SOHC. I took it to the shop and they said it was:
*P 0171 BANK 1 LEAN.
*P 0174 BANK 2 LEAN.
He gave me a few things that could be wrong.
1. Intake gasket leaking
2. Bad MAF
3. Bad DPFE
They want to do an air leak test. Im not sure what that test does.
I dont want to just start throwing parts at it. What is wrong with it???
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