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Timing Belt Replacement

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Timing belt replacement involves removing the old belt that synchronizes the crankshaft and camshaft(s) and installing a new one along with the tensioner and idler pulleys. The timing belt is a critical maintenance item — if it breaks on an interference engine, the pistons can strike the valves causing severe internal engine damage.

Estimated time: 4-8 hours

Cost Breakdown

DIY (Parts Only)

$200 - $600

Professional Shop

$500 - $1500

Prices vary by location, vehicle make/model, and shop rates.

Tools Needed

  • Socket wrench set
  • Torque wrench
  • Timing belt tool set
  • Jack and jack stands
  • Harmonic balancer puller
  • Drain pan

Step-by-Step Instructions

1

Disconnect the negative battery cable. Remove the serpentine belt, accessories, and engine covers to access the timing belt cover.

2

Remove the timing belt covers. Rotate the engine to top dead center (TDC) on cylinder 1 and verify all timing marks are aligned on the crankshaft and camshaft sprockets.

3

Release the timing belt tensioner and remove the old timing belt. Do not rotate the engine or camshafts while the belt is off.

4

Replace the tensioner, idler pulleys, and water pump (if driven by the timing belt). Inspect the camshaft and crankshaft seals for leaks.

5

Install the new timing belt, routing it according to the manufacturer's diagram. Ensure all timing marks remain aligned.

6

Apply tension to the belt using the new tensioner and verify correct tension. Rotate the engine by hand two full revolutions and recheck all timing marks.

7

Reinstall all covers, accessories, and the serpentine belt. Refill coolant if the water pump was replaced.

8

Start the engine and verify smooth operation with no unusual noises.

Tips & Warnings

  • Always replace the tensioner, idler pulleys, and water pump along with the timing belt — these components have similar lifespans.
  • Mark all timing positions with paint or a marker before removing the old belt as a backup reference.
  • Timing belt replacement intervals are typically 60,000-100,000 miles — check your owner's manual for the specific interval.
  • This is one of the most labor-intensive DIY repairs. If you are not confident with the procedure, consider professional service.

Related OBD-II Codes

P0340Camshaft Position Sensor Circuit MalfunctionP0341Camshaft Position Sensor Circuit Range/PerformanceP0016Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor A)P0017Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor B)

Related Recalls

Recommended Parts & Tools

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