Visual Checks

WARNING: This page does not describe the selected car, but rather 30 other vehicles, including the 2004 Mercury Sable, 2004 Mercury Mountaineer, 2004 Mercury Monterey, 2004 Mercury Marauder, and 2004 Mercury Grand Marquis. However, it is still accessible from the selected car via links, so may be relevant.

Inspect the air cleaner and inlet duct.
Check all engine vacuum hoses for damage, leaks, cracks, kinks and proper routing.
Check Electronic EC system wiring harness for proper connections, bent or broken pins, corrosion, loose wires and proper routing.
Check the powertrain control module (PCM), sensors, and actuators for physical damage.
Check the engine coolant for proper level and mixture.
Check the transmission fluid level and quality.
Make all necessary repairs before continuing with Quick Test.