3rd Gen 4Runner Timing Belt Replacement: A Comprehensive Guide

As the owner of a 2005 Toyota 4Runner with 196,000 miles on it, I recently embarked on replacing my timing belt. The experience was not only challenging but also provided an opportunity to address other essential maintenance tasks. In this article, I will outline the process and offer valuable tips for those planning to tackle this project.

Before starting, it's essential to note that Black Works has published detailed information on timing belt replacement, which is a great resource for beginners. However, as you'll soon discover, there are additional components that should be replaced or inspected during this procedure.

Timing Belt Replacement

The timing belt kit usually does not include valve cover gaskets, which can be frustrating to realize once the project has already begun. To avoid this mistake, make sure to purchase separate valve cover gaskets and have them ready for installation. Additionally, consider replacing the drive/accessory belt tensioner and idler pulley, as they are prone to wear and tear.

Valve Cover Gaskets and Valve Clearance Check

When replacing the timing belt, it's a good idea to inspect and replace valve cover gaskets. This will prevent any potential leaks or issues down the road. Moreover, checking the valve clearance is crucial for optimal engine performance. Although it may seem like an additional expense, having your mechanic check valve clearance can provide peace of mind and avoid costly repairs in the future.

Drive Belt Tensioner and Idler Pulley Replacement

The drive belt, also known as the serpentine belt, should be inspected and replaced if necessary. The tensioner and idler pulleys are crucial components that require replacement to ensure proper belt operation.

Budget-Friendly Upgrades

As I was planning my timing belt replacement, I realized that I could squeeze in some additional upgrades without breaking the bank. With a budget of around $2,000 for long-tube headers and labor, I opted to replace the valve cover gaskets, spark plug seals, and valve clearance check. These upgrades not only improved my 4Runner's performance but also provided a sense of accomplishment.

Replacing the timing belt on your 3rd Gen 4Runner is a significant undertaking that requires attention to detail and patience. By following this guide, you'll be well-prepared to tackle the task and potentially identify other maintenance needs along the way. Remember to inspect and replace valve cover gaskets, check valve clearance, and consider upgrading drive belt components for optimal engine performance.

3rd gen 4runner timing belt replacement