IA3 - Check Resonance Chamber Condition

^ Visually check the resonance chambers for a pinched hose connection, or for cracks that allow unfiltered air and moisture to enter the system.

^ Check the resonance chambers for other damage.

^ Are the resonance chambers free of damage or poor connections?

YES -- GO to IA4. IA4 - Check Throttle Linkage

NO -- SERVICE or REPLACE the resonance chamber(s).