Porsche 911 Problem Reports

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The constant velocity (CV) boots and CV joints should be inspected at each service. Servicing the torn CV boots early can prevent the need to replace the CV half shaft or CV joint.

Cam tensioner/cam timing issues can cause the Check Engine Light to illuminate.

Due to air leaks at various locations, the Check Engine Light may illuminate.

Check Engine Light illumination and performance issues can be caused by oxygen sensor faults.

The accumulation of moisture at major connectors and control units can cause various ABS/PDAS faults due to corrosion.

 

A normal operating clock may cause the airbag warning lamp to illuminate or a chronic dead battery.

Smoke, oil consumption, and fuel trim issues with various fault codes can be traced to an internal leak at the oil separator.

Over time, the engine can leak oil at various locations. Early-production vehicles require engine disassembly and modification to resolve leaks at the cylinder heads, oil return tubes, valve covers, timing cover, chain housings, case through bolts, and lines to/from the oil cooler.

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

 

Engine oil leaks can occur at the rear main seal and/or intermediate support cover o-ring; a revised seal is available. A careful diagnosis with proper tools is necessary to verify dimensional accuracy of the crankshaft to engine block.

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

The front hood and rear deck lid support struts may fail; replacement is required.

A small leak in the coolant reservoir can cause persistent coolant loss. To ensure engine longevity, coolant loss and overheating issues need to be resolved. Out technicians tell us the proper coolant fill procedure must be followed when refiling the cooling system.

Engine issues related to valve guide wear are common. Oil consumption, smoking at first startup, and valve train noise are all symptomatic of loose guides and worn valve stems. The valve train is complex and should be thoroughly inspected if a problem arises.

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