Visual Check

WARNING: This page is about a different car, the 1998 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.

Perform the following, and make all necessary repairs before continuing with QUICK TEST:

Inspect air cleaner and inlet ducts.
Inspect system wiring harness for proper connections, bent or broken pins, corrosion, loose wires and proper routing.
Check Powertrain Control Module (PCM), sensors and actuators for physical damage.
Check engine coolant for proper level and mixture.
Check transmission fluid level and quality.