Porsche 911 Problem Reports

Most Reported Porsche 911 Problem Reports

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

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

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.

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

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