Visual/Physical Check

Several of the symptom procedures call for a visual/physical inspection. A careful visual/physical inspection can aid in correcting a problem without further checks and can save valuable time. A visual/physical inspection should include the following items:
^ Verify the PCM grounds are not loose, corroded, or in an improper location.
^ Verify the vacuum hoses are not split, kinked, or improperly connected. The proper connections are shown on the Vehicle Emission Control Information label. Check the vacuum hoses for any type of leak or restriction. Refer to Emission Hose Routing Diagram.
^ Inspect the air intake ducts for collapsed or damaged areas.
^ Check for air leaks at throttle body mounting area, the Mass Air Flow (MAF) sensor, and the intake manifold sealing surfaces.
^ Inspect the ignition wires for cracking, hardness, proper routing, and carbon tracking.
^ Inspect the wiring for improper connections, pinches, and cuts.