Visual/Physical Check

Several of the symptom procedures call for a Careful Visual/Physical Check. The importance of this step cannot be stressed too strongly - it can lead to correcting a problem without further checks and can save valuable time. This check should include:

^ Engine control module grounds for being clean, tight and in their proper location.

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

^ Air leaks at throttle body mounting area and intake manifold sealing surfaces.

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

^ Wiring for proper connections, pinches and cuts.

^ Fuel lines for being pinched or misrouted.