Tacoma & Tundra 3.4L
WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2003 Toyota Tundra, 2003 Toyota Tacoma, 2003 Toyota Sienna, 2003 Toyota Sequoia, and 2003 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
- Positive Crankcase Ventilation (PCV) valve. See PCV VALVE LOCATION table.
- Apply air pressure to PCV valve at bottom (cylinder head side) of PCV valve. Ensure air flows easily through PCV valve. Apply air pressure to PCV valve at vacuum side (intake manifold side) of PCV valve. Ensure air flows through PCV valve with some resistance.
- Apply air pressure to PCV valve at vacuum side (intake manifold side) of PCV valve while using small screwdriver to push upward on valve located inside PCV valve at bottom (cylinder head side) of PCV valve. Ensure air flows through PCV valve with strong resistance. Replace PCV valve if valve does not function as described.
PCV VALVE LOCATION
| Application | Location | |
|---|---|---|
| Avalon, Camry, Camry Solara, Highlander & Sienna | On Firewall Side Valve Cover At Timing Belt End Of Engine | |
| Land Cruiser & Sequoia | At Front Of Driver's Side Valve Cover, Below Oil Fill Cap | |
| Tacoma | Front Of Passenger's Side Valve Cover | |
| Tundra | ||
| 3.4L | Front Of Passenger's Side Valve Cover | |
| 4.7L | At Front Of Driver's Side Valve Cover, Below Oil Fill Cap | |
| 4Runner | ||
| 4.0L | Rear Of Driver's Side Corner Of Air Intake Chamber | |
| 4.7L | At Front Of Driver's Side Valve Cover, Below Oil Fill Cap | |