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Problems for specific Porsche 911 years:

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Most reported Porsche 911 problems

 

Verified for the Porsche 911

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

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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.

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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.

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Valve cover leaks are common.
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Due to air leaks at various locations, the Check Engine Light may illuminate.

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Pay close attention to warning lights and have the brakes inspected regularly—immediately address any brake problems. Hard driving habits will cause excessive brake pad and rotor wear.

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An internal transmission problem can cause difficulty engaging or downshifting from second gear. Improved parts are available as of the 1997 model year.
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Ring and pinion failure can occur on 4WD versions.
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Cam tensioner/cam timing issues can cause the Check Engine Light to illuminate.

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Abnormal noises from the intermediate shaft area may be signs of impending engine failure, don't wait to get this issue checked out!

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A failing mass air flow sensor or EVAP purge valve can cause misfire issues.
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Wind noise at the front of the car and water leaks at the vent wing are typical problems on Targa models.
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Check Engine Light illumination and performance issues can be caused by oxygen sensor faults.

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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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Verified for the Porsche 911
The brake warning display and warning gong can activate, typically after the first start of the day. The warning light/gong might stop after idling for a short time. This fault is usually caused by low stored hydraulic pressure due to a failed high pressure accumulator.
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