How to Fix a Rattle in a Catalytic Converter

Written by zyon silket
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How to Fix a Rattle in a Catalytic Converter
(Thinkstock/Comstock/Getty Images)

The catalytic converter is made of a metal housing and packing material designed to remove harmful pollutants from your exhaust gas. The front of the converter is secured to the exhaust manifold with two bolts, with a doughnut gasket between the joint. The back of the catalytic converter is attached to the exhaust pipe with two bolts, with a doughnut gasket between the joint. Due to the doughnut gaskets, a rattle in a catalytic converter can only be coming from the heat shroud bolted to the bottom of the housing.

Skill level:
Moderately Easy

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Things you need

  • Ramps
  • Socket set

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Instructions

  1. 1

    Drive your vehicle onto a set of ramps and secure the parking brake.

  2. 2

    Locate the catalytic converter under the engine next to the transmission. The converter bolts to the exhaust manifold coming out of the engine head.

  3. 3

    Locate the four bolts that secure the heat shroud to the bottom of the catalytic converter. Tighten the bolts using a socket and ratchet.

  4. 4

    Close the bonnet. Release the parking brake and back the vehicle off the ramps.

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