why does my Ram 1500 DT (2019-Present) have a knocking noise when idling

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery before starting work on the engine.
• Allow the engine to cool down if it has been running.

2. Change Engine Oil and Filter

• Sub-steps:
  1. Raise the vehicle using a jack and secure it with jack stands.
  2. Place an oil drain pan beneath the oil pan.
  3. Remove the oil drain plug and allow the oil to fully drain.
  4. Replace the oil filter using an oil filter wrench; apply a thin layer of new oil to the rubber gasket of the new filter before installation.
  5. Reinstall the drain plug and tighten to the manufacturer’s torque specifications (usually around 25-30 ft-lbs).
  6. Fill the engine with new oil as specified in the owner's manual (usually 5W-20 or 0W-20, depending on the engine).
  7. Start the engine and let it idle for a few minutes to circulate the new oil; check for leaks.

3. Inspect and Replace Engine and Transmission Mounts

• Sub-steps:
  1. Locate the engine and transmission mounts; these are typically near the front and rear of the engine.
  2. Visually inspect the mounts for cracks, wear, or separation.
  3. If damaged, remove the bolts securing the mounts using a socket wrench.
  4. Replace with new mounts, ensuring they are correctly aligned and torqued to manufacturer specifications.
  5. Reinstall all components and check for any clearance issues.

4. Inspect Timing Chain/Belt

• Sub-steps:
  1. Remove any necessary covers to access the timing chain or belt.
  2. Inspect for signs of wear, slack, or misalignment.
  3. If damaged, replace the timing chain or belt, following manufacturer specifications for installation and tensioning.
  4. Reassemble all covers ensuring all bolts are torqued as per specifications.

5. Check Exhaust System

• Sub-steps:
  1. Inspect the exhaust system visually for any loose brackets, heat shields, or loose connections.
  2. Tighten any loose components or replace damaged parts.
  3. Start the engine and listen for changes in the knocking noise.

Tools Required:

• OBD-II scanner
• Socket set
• Oil filter wrench
• Torque wrench
• Jack and jack stands
• Mechanic's stethoscope

Parts Required:

• Engine oil
• Oil filter
• Engine mounts (if required)
• Timing chain/belt (if required)
• Exhaust brackets or heat shields (if required)

Estimated Repair Time: 2-4 hours

Safety Warnings:

• Disconnect the battery before working on electrical systems.
• Allow the engine to cool before opening the radiator or working on engine components.