Driveshaft Vibrates
1. Road test vehicle to determine critical vibration points. Note road speed, engine rpm and shift lever positions at which vibration occurs.2. Stop vehicle and run engine with clutch depressed (automatic transmission in Neutral) through critical speed ranges determined in Step 1 of Driveshaft Vibrates.
3. If vibration is gone, the driveshaft must be balanced as described in the 1997 Ranger Service Manual, Page 05-00-29.