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1991 Porsche 911 Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 1991 Porsche 911

1991 Porsche 911 Problems

Wind noise at the front of the car and water leaks at the vent wing are typical problems on Targa models.

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

 

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.

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1991 Porsche 911 Questions

I'm looking to replace the lamps (internal to the headlight unit) only, not the entire headlight unit

my battery is dead on my 911 how do i charge battery when i can't open hood?

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1991 Porsche 911 Recalls

A PART OF THE STEERING COLUMN UPPER UNIVERSAL JOINT CRACKED DURING THE MANUFACTURING PROCESS.AFTER THE ENGINE HAS BEEN TURNED OFF, THE REAR HEATER WILL AUTOMATICALLY OPERATE IN ORDER TO DISSIPATE HEAT IN THE ENGINE HEATING SYSTEM. DURING THIS OPERATION, THE RESISTOR FOR THE REAR HEATER BLOWER CAN BECOME OVERLOADED DUE TO A BINDING OR SEIZED REAR HEATER BLOWER.THE HYDRAULIC BRAKE PRESSURE REDUCTION VALVE CAUSES THE RATE OF HYDRAULIC PRESSURE REDUCTION TO SLOW DOWN, WHICH MAY RESULT IN THE REAR WHEELS LOCKING-UP EVEN WITH THE ANTI-LOCK BRAKE SYSTEM IN OPERATION.

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