Gschurch
Mercedes CLA Diesel Power Loss and EGR Valve Issue
Summary of the thread
A 2014 Mercedes CLA Diesel is experiencing significant power loss, boost leak, and unusual noises, with diagnostics indicating a low-pressure EGR valve issue. Despite visits to multiple garages, including Mercedes, the problem remains unresolved. Suggested solutions include checking for intercooler hose leaks, inspecting the EGR valve for blockages, examining the turbocharger and its components, and inspecting the intake manifold for cracks or leaks.
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7 comment(s)
Gschurch (community.author)
community_quotation:
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Check the intercooler hoses and connections for any signs of damage or leaks, as these can cause boost leaks and power loss. Ensure all clamps are tight and the hoses are in good condition. Let us know if you find anything or need further assistance.
Mercedes and the other 3 garages have said they have done that and smoke tested, pressure tested
CarlyMechanic
community_quotation:
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Mercedes and the other 3 garages have said they have done that and smoke tested, pressure tested
Consider inspecting the EGR valve itself for any blockages or carbon buildup, as this can affect its operation and cause power loss. If the valve is clogged, cleaning or replacing it might resolve the issue. Please update us on your findings or if you need further guidance.
CarlyMechanic
community_quotation:
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The egr valve has been checked and is clear
Check the turbocharger for any signs of wear or damage, as issues with the turbo can lead to power loss and unusual noises. Pay attention to the wastegate and actuator as well. If you're unsure, it might be best to have a professional inspect these components. Let us know how it goes or if you have more questions.
Gschurch (community.author)
community_quotation:
community_author_wrote_on
Check the turbocharger for any signs of wear or damage, as issues with the turbo can lead to power loss and unusual noises. Pay attention to the wastegate and actuator as well. If you're unsure, it might be best to have a professional inspect these components. Let us know how it goes or if you have more questions.
It’s with Mercedes at their garage and they are struggling to find the problem
CarlyMechanic
community_quotation:
community_author_wrote_on
It’s with Mercedes at their garage and they are struggling to find the problem
Ask them to inspect the intake manifold for any cracks or leaks, as these can also cause similar symptoms. It's crucial to ensure all components in the air intake system are intact. Keep us updated on any progress or if you need more help.
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MERCEDES
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CLA
CarlyMechanic
Check the intercooler hoses and connections for any signs of damage or leaks, as these can cause boost leaks and power loss. Ensure all clamps are tight and the hoses are in good condition. Let us know if you find anything or need further assistance.