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Probably not. They would have to be clogged solid not to let engine idle in which case the engine would not run at any speed. If they were semi-clogged the engine would idle but hold engine back from revving up.

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โˆ™ 2010-06-17 20:36:21
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Q: Could Catalytic converters clogged on 1991 GM Sonoma truck cause it not to stay idled?
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