Problem Reports » Emissions Air Injection Pumps Can Seize Up and Cause Noise/Smoke

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Mercedes-Benz SL320

 

Report: Emissions Air Injection Pumps Can Seize Up and Cause Noise/Smoke

Mercedes-Benz SL320 Problem
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Model Years Affected: 1994, 1995, 1996, 1997

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The emissions air injection pump can seize, causing a loud squealing noise followed by smoke from the drive belt. If the engine is not turned off, the belt will break, turning on the alternator/battery warning light.

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