Thread: Where is 3.0 D4 ECM earth stud?

Can anyone advise the location of the earth stud please? The 4 wires are almost 1m long and terminate in 2 terminals which I assume are bolted to the one stud.

The primary MAF airflow/mass is high even with the engine not running which suggests a poor MAF earth. The MAF earth connector resistance to the block increases as ECM current draw increases which indicates a poor ECM earth as the MAF earth is via the ECM. The high airflow is triggering restricted performance, even without the engine running.

Edit: According to the WSM, there's an earth stud behind the left front inner guard to which the body to chassis earth cable is bolted plus 2 smaller cables are bolted. It's time to remove the inner guard.

Found it behind the left side kick panel, below the level of the carpet. Now to get a spanner onto the nut.