- Visual/Physical Underhood Inspection

Several of the symptom procedures call for a careful Visual/Physical. check. It can lead to correcting a problem without further checks and can save valuable time. This check should include the following items:

^ Check PCM grounds for being clean, tight, and in their proper location.

^ Check vacuum hoses for splits, kinks, and proper connections, as shown on Vehicle Emission Control Information label - Check thoroughly for any type of restriction.

^ Check air intake ducts for collapsed or damaged areas.

^ Check air leaks at throttle body mounting area, Mass Air Flow (MAF) sensor and intake manifold sealing surfaces.

^ Check ignition wires for cracking, hardness, proper routing and carbon tracking.

^ Check wiring for proper connections, pinches and cuts.