FWIW. I've been chasing a lean condition for weeks. P0171 and P174. Had to restrain myself from throwing parts at it. So...I cleaned the MAF that was included on a used air filter box (should have known, nope) and throttle body THOROUGHLY. Drove it to a local shop that had the proper technology...
Going to replace all 4 O2 sensors on my old (North American) 2006 LR3 (4.4). Very sure they are OEM. WAY past due. I have Denso part number confusion. I am old and my brain hurts sometimes :rolleyes: Can anyone simplify this? In other words "these for the right and these for the left". Over...
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