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Problems for specific Porsche 911 years:

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Most reported Porsche 911 problems

 

Verified for the Porsche 911

Climate control modules can be problematic. Symptoms vary but include failure or persistent dead battery after not using the vehicle for a while.

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Verified for the Porsche 911
The dual mass flywheel can fail and cause symptoms like noise and chatter when operating the clutch and changing gears.
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Verified for the Porsche 911
Issues with the air flow meter flap or calibration can cause fuel mixture control problems.
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Verified for the Porsche 911

Ports and passages for secondary air flow can clog at the cylinder head/cam housing area. Partial engine disassembly may be required to fix the problem.

6 Reports
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Verified for the Porsche 911

An accumulation of small air leaks at various locations around the intake manifold/intercooler area can cause performance problems.

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Verified for the Porsche 911

Various fuel trim and oxygen sensor limit fault codes can be traced to an internal vacuum leak at the oil separator.

 

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