Mercedes-Benz CLK350 loss of power and rough idle due to intake manifold plastic lever failure on Mercedes-Benz CLK350

Some Mercedes-Benz CLK350 owners report experiencing a loss of power and rough idle due to a common issue with the intake manifold plastic lever failure. Symptoms of this problem can include rough idle, loss of acceleration at lower speeds, occasional engine shut off while idling, and the illumination of the check engine light. This issue is often attributed to the adjustable air flap inside the intake manifold breaking, which negatively impacts vehicle performance. To address this, some owners opt to replace the intake manifold with a Pierburg OEM part as a cost-effective alternative to genuine Mercedes-Benz replacements. Others may choose to install a repair kit that replaces the broken plastic lever with a metal component. It is crucial for owners to address this issue promptly to prevent further damage and ensure their vehicle operates properly.