car repairs


Question by  worker9895 (16)

What causes the noise in a Subaru's catalytic converter heat shield?


Answer by  hobominer (184)

Potentially two things - either the metal shrinking/expanding due to heat or perhaps there is a lose nut/bolt/bracket/etc on the inner side of the shield


Answer by  rajeshrocky88 (8)

The rattle in the catalytic converter is usually a warning that it is about to fail as the catalyst breaks up it will fall apart. and eventually plug your exhaust.

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