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post #3 of (permalink) Old 17th June 2008
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Could be the catalytic converter breaking up or the heat shield above the cat is loose. Happened twice on my Meg - 1st time it was the heat shield but eventually the cat did need replacing.

An unscrupulous exhaust centre will tell you you need a new cat if the heat shield has loosened. They'll not tell you its the heat shield of course, they'll tell you its the cat

The Vauxhall Cavalier - one of the safest cars you'll bump into
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