Checks, in order
- U-joints and slip yokeTwist the driveshaft by hand and look for play at the joints. Grease the slip yoke if there is a fitting and replace any rusty joint.easy $ · under about $50
- Wheel bearingsLift the truck and rock each wheel, then spin it by hand and listen. A growl or roughness points to the bearing.medium $$ · about $50 to $500
- Front CV axles on 4WDClicking on turns with the wheel cranked over points to a worn CV joint. Look for torn boots and flung grease.medium $$ · about $50 to $500
- Differential fluid and sealsCheck fluid in the front and rear differentials and look for pinion seal leaks. Low or burnt fluid explains a whine.easy $ · under about $50
- Tire balance and wearA vibration at speed that matches wheel speed is often a balance or tire problem. Check it before the driveline.easy $ · under about $50
Applies to: 2003 to 2009 4Runner with the 4.0L 1GR-FE V6 and the 4.7L 2UZ-FE V8, 2WD and 4WD. Engine specific items are labeled, and some issues apply mainly to early model years.
Tools and parts for these checks
Links below are Amazon affiliate links: as an Amazon Associate, toyotadata earns from qualifying purchases, at no extra cost to you. Confirm fitment for your exact truck before you order.
| ITEM | USED FOR | BUY |
|---|---|---|
| Driveshaft U-joint | Replacing a worn U-joint | Shop on Amazon |
| Driveshaft center support bearing | Replacing a worn carrier bearing (two-piece shafts) | Shop on Amazon |
| Lever grease gun | Greasing U-joints and the slip yoke | Shop on Amazon |
| Pry bar set | Checking ball joints, bushings and tie rod ends for play | Shop on Amazon |
Go deeper
The same problem on other Toyotas
Other drivetrain problems on the 4th Gen 4Runner
More 4th Gen 4Runner problems
- V6 losing coolant, cold start misfire or overheating (early 4.0L) (Engine)
- Frame rust or rusted suspension mounts (Frame & Body)
- Clunk, knock or wandering from the front suspension (Steering & Suspension)
- Sticky, melting or cracked dashboard (Body & Electrical)
- V8 timing belt service: when is it due? (Engine)
- Ticking or diesel-like noise on cold start (Engine)
All 16 4th Gen 4Runner symptoms in the interactive troubleshooter →
General guidance from owner experience. Confirm torque specs, fluid capacities and procedures in the factory service manual. Brakes, steering and anything structural: if in doubt, have a qualified shop inspect it before driving.