The timing belt or timing chain keeps the crankshaft and camshafts turning in exact step so the valves and pistons never meet. On an interference engine, a snapped belt bends valves and can total the engine in one second. AutoTech Clinic replaces timing belts and repairs timing chain systems at our Dearborn shop, on schedule and before that happens.
If your vehicle uses a belt, the replacement interval is a hard number in the service book, usually somewhere between 60,000 and 105,000 miles. It is not a suggestion.
- How Long
- Usually 1 to 2 days, depending on the engine.
- Same Day
- Time frame confirmed before you leave the car.
- Vehicles
- Foreign and domestic, cars through trucks.
Signs You Need Timing Belt and Timing Chain
- You have passed the mileage in the owner manual for a belt change
- A rattle from the front of the engine on cold startup
- A check engine light with camshaft or crankshaft correlation codes
- Ticking that rises and falls with engine speed
- Oil or coolant leaking onto the belt area
- The engine cranks but will not start after a sudden noise
What We Do
- 01
Confirm Belt or Chain
We check which system your engine uses and whether it is an interference design, because that changes how urgent the job is.
- 02
Inspect the Whole Drive
We check the tensioner, idlers, water pump and seals. A belt that fails early is usually taken out by a seized idler or a leaking seal, not by the belt itself.
- 03
Replace as a Kit
Belt, tensioner and idlers go in as a set. Reusing a tensioner to save money is how a fresh belt comes off at 20,000 miles.
- 04
Water Pump at the Same Time
On engines where the belt drives the water pump, we strongly recommend replacing it now. The labor is already open.
- 05
Set Timing and Verify
We set timing to the factory marks, turn the engine by hand through two full revolutions to confirm, then start and verify camshaft correlation with the scan tool.
Interference or Not: Why It Matters
On an interference engine, the valves and pistons share the same space at different moments. When the timing belt breaks, the camshaft stops and the crankshaft keeps spinning, and the pistons hit the open valves. That bends valves, and sometimes damages pistons and heads.
On a non-interference engine the same failure just leaves you stranded. Both are worth avoiding, but on an interference engine the belt interval is the difference between a planned service and a ruined engine.
Chains Are Not Maintenance Free
Manufacturers moved to chains partly to remove the scheduled belt replacement. Chains do last longer, but they stretch, and the plastic guides and hydraulic tensioners wear out. A rattle for a few seconds on cold startup is the classic early warning.
A stretched chain throws off camshaft timing enough to set correlation codes and cost you power and fuel economy. Caught early it is a repair. Left alone the chain can jump a tooth, and then it is the same damage as a broken belt.
What Affects the Cost
We quote your vehicle specifically after inspecting it, because these are the things that move the number up or down:
- Whether the engine uses a belt or a chain, since chain jobs are usually larger
- How much has to come off to reach the front of the engine
- Whether the water pump, tensioner and idlers are replaced at the same time
- Transverse V6 engines, which are among the most labor intensive
- Any valve damage if the belt has already failed
Call (313) 277-7200 with your year, make and model and we will tell you what to expect before you come in.
Why AutoTech Clinic
AAA Approved
An inspected facility that has to meet AAA standards for equipment and training.
Photos First
You see what we found and approve the price before anything is taken apart.
Same-Day Service
Parts on hand for the vehicles we see most, so you are not waiting on a delivery.