Step  | Action  | Yes  | No  | 
|---|---|---|---|
DEFINITION: The vibration is engine-speed related. The vibration may be sensitive to accessory load.  | |||
1  | Check the drive belt for wear, damage, debris build-up and missing belt ribs. Is the belt worn or damaged?  | Go to Step 2  | Go to Step 3  | 
2  | Replace as necessary. Refer to Drive Belt Replacement . Is the repair complete?  | Go to Step 3  | --  | 
3  | Check for loose or missing fasteners. Are there loose or missing fasteners?  | Go to Step 4  | Go to Step 5  | 
4  | Re-tighten or replace as necessary. Is the repair complete?  | System OK  | --  | 
5  | Check for damaged or bent drive pulleys. Are there damaged drive pulleys?  | Go to Step 6  | Go to Step 7  | 
6  | Repair or replace as necessary. Is the repair complete?  | System OK  | --  | 
7  | Check for proper tensioner operation. Is the drive belt tensioner operating properly?  | Go to Step 9  | Go to Step 8  | 
8  | Replace as necessary. Refer to Drive Belt Tensioner Replacement . Is the repair complete?  | System OK  | --  | 
9  | Check for loose, bent or cracked brackets. Are there loose, bent or cracked brackets?  | Go to Step 10  | System OK  | 
10  | Repair or replace the brackets as necessary. Is the repair complete?  | System OK  | --  |