why does my Toyota RAV4 XA40 (2013-2018) have a weird noise coming from the engine

Solution

1. Preparation

• Tools Required: OBD-II scanner, mechanic's stethoscope, socket set, torque wrench, jack and jack stands.
• Safety Warnings: Disconnect the battery before starting work on the engine. Allow the engine to cool before opening any components.

2. Address Loose Components

• Sub-steps:
  1. Tighten any loose bolts or fasteners found during the visual inspection.
  2. Replace any damaged components, such as broken brackets or clips.

3. Replace Engine Oil and Filter

• Sub-steps:
  1. Drain the old engine oil by removing the oil drain plug.
  2. Replace the oil filter with a new one.
  3. Refill the engine with the manufacturer-recommended oil type (0W-20 for most RAV4 models).
  4. Torque the drain plug to the manufacturer’s specifications (typically 25 ft-lbs).

4. Replace Worn Belts/Pulleys

• Sub-steps:
  1. Remove the serpentine belt using a belt tensioner tool.
  2. Inspect the belt for cracks or wear; replace if necessary.
  3. Check pulleys for smooth operation; replace any that are damaged or noisy.
  4. Reinstall the new or repaired belt, ensuring proper routing and tension.

5. Address Engine Mounts

• Sub-steps:
  1. Lift the vehicle and support it securely with jack stands.
  2. Inspect the engine mounts for cracks or separation.
  3. Replace any faulty mounts with new OEM parts.
  4. Torque the new mounts to manufacturer specifications.