Cat Converter Heat Shield Rattle
Often one or more of the bolts that hold it in place has broken loosened or become overly corroded.
Cat converter heat shield rattle. I raised the driver s side slightly and with a broom handle traced the sound to the catalytic converter. 2009 honda crv was rattling and noisy while idling. It is reminiscent of a heat shield rattle only much louder.
There are three parts to a catalytic converter. In this video i ll show you a temporary fix for an rattling catalytic converter heat shield. This is a thin stainless stamped piece that is bolted on top of the catalytic converter to insulate the frame from the heat eminating from the exhaust stream.
I ve used this technique on more than one vehicle with great success. Dealership told me the rattle was from a loose heat shield on the catalytic converter. I get in and tap the throttle three times then once more.
Catalytic converter heat shield rattle is a pretty common occurrence that is caused by the heat shield becoming loose. Step 1 spray the converter s heat shield bolts with penetrating oil about an hour before you go to work on them. Rattle sound in this audio file you will hear the van idling.
P0430 cat efficiency.