Gdetrailer wrote:
Depends, O2 sensor is considered a "wear item", but not always the issue with a lean code.
Concur !OEM (Motorcraft) sensors are kind of pricey. The Bosch replacement one work well and cost less, especially if you buy them online (Rock Auto or Amazon). It is definitely a shot from the "parts cannon", but not to expensive and easy to install.
Gdetrailer wrote:
The typical problem areas with the Modular engines which causes the lean codes is vacuum leaks ...
Concur, again !These can be difficult to trace down. Don't be surprised if you find a broken exhaust manifold. Common on Modular/Triton engines and could be causing the lean code.