Timing Belt & Chain Replacement

Timing Belt & Chain Replacement

Whether your vehicle’s engine uses a timing belt or timing chain, it eventually will reach its end of life and require replacement or repair. When that time comes, Automotive Diagnostic Specialties (ADS Auto Repair) has the equipment and ASE-certified technicians to perform the service as cost-efficiently as possible and get you back on the road quickly and safely. 

Timing belts should be replaced roughly every 100,000 miles, which if neglected can lead to major, costly consequences for your vehicle. Timing chain condition is often dependent on diligent regular maintenance and changing engine oil regularly at recommended intervals. (Using premium quality engine oil and filters will also help, as will maintaining proper oil level to ensure that the timing chain is always lubricated.) Chains don’t typically have to be replaced at certain intervals like belts, but do need to be replaced once there’s a problem with them. Depending on vehicle make/model and driving habits, timing chains can last anywhere between 40,000 and 100,000 miles. 


A timing belt or chain connects your engine’s crankshaft to the camshaft and plays the important role of controlling the pistons and valves in your vehicle. A timing belt features notches that mesh exactly with its mating sprockets, so maintaining uniformity between the notch spacing and the mating sprockets is critical. Despite being precision molded a tough rubber compound designed for meshing and long life, these belts wear over time and become faulty.

If the timing belt or chain breaks or becomes damaged, the engine will not be able to turn over or ignite, and can harm the cylinder head hardware, crank bearings, and/or the oil pump. 

Signs of Necessary Replacement

  • First, check your owner’s manual – Manufacturers will recommend when your vehicle’s timing belt needs to be replaced. We usually recommend replacing your timing belt roughly every 100,000 miles, but it may vary by vehicle manufacturer. 
  • Noticeable sounds – A ticking sound from within your engine may be a sign that your timing belt is bad. A faulty chain may be indicated by rattling, whirring, whining, or buzzing noises. 
  • Oil leak – A common symptom of timing belt/chain issues are oil leaks.
  • Engine won’t turn over at start – As you turn the ignition, if the engine won’t turn over, it may be due to a problem with your timing belt/chain.
  • Engine misfires – Slipped timing belts/chains could cause an engine cylinder to open or close sooner than it should, which can result in misfires.


Our ASE-certified technicians will inspect your timing belt/chain and determine if it’s in need of replacement. While inspecting your timing belt, we’ll check out other related parts such as water pump, timing belt sprockets, and tensioning pulleys to ensure we fix all aging, potentially failing components. For chains, we typically replace as a kit with a new tensioner, guides, and other parts of the chain drive mechanism.

If your timing belt has reached its end of life or you’re experiencing issues with your timing belt/chain, count on ADS Auto Repair in Chandler, AZ. Contact us today at (480) 961-8704 to schedule your timing belt/chain service.