Visual/Physical Check

NOTE: Refer to Connector Test Adapter Kit J 35616-A Notice in Service Precautions.

Several of the symptom procedures call for a careful visual and physical inspection. This can lead to correcting a problem without further checks and can save valuable time. This check should include the following areas:
^ Verify that the PCM grounds are clean, tight, and in the correct locations.
^ Inspect the vacuum hoses for splits, kinks, and correct connections, as shown on the Vehicle Emission Control Information label. Check thoroughly for any type of leak or restriction.
^ Check the air intake ducts for collapsed or damaged areas, especially between the mass air flow (MAF) sensor and the throttle body.
^ Check for air leaks at the throttle body mounting area, the MAF sensor, and the intake manifold sealing surfaces.
^ Inspect the wiring harness for poor connections, pinches, cuts, or other damage.
^ Check for loose, damaged, or missing sensors and components.

The following Symptom tables are located as follows:
^ Intermittent Conditions
^ Hard Start
^ Surges/Chuggles
^ Lack of Power, Sluggishness, or Sponginess
^ Detonation/Spark Knock
^ Hesitation, Sag, Stumble
^ Cuts Out, Misses
^ Poor Fuel Economy
^ Rough, Unstable, or Incorrect Idle and Stalling
^ Dieseling, Run-On
^ Backfire
^ Poor Fuel Fill Quality