AIS4 - Check For Throttle Body Sticking, Binding, Grabbing

^ Key Off.

^ Accelerator cable removed from throttle body linkage per AIS1.

^ Clean air tube removed from throttle body per AIS2.

^ Snap throttle from open to closed position several times.

^ Gently cycle throttle by hand from closed to wide open position. Inspect for freedom of travel particularly during the initial throttle opening.

^ Check for foreign material or debris in the throttle bore and plate area that can cause sticking or binding.

NOTE: The throttle body uses a special coating/sealant on the throttle bore and plate area to make them tolerant to engine sludge accumulation. Sludge or oil film deposits In this area do not cause a sticking or binding condition and do not require servicing. Do not clean the throttle bore and plate area. cleaning will damage the throttle body assembly.

^ Does the throttle rotate freely without sticking, binding or grabbing?

YES -- Reconnect accelerator cable and clean air tube to the throttle body assembly. Return to Diagnostic Routines if the drive symptom persists.

NO -- Replace throttle body assembly. Reconnect all components.