Wind noise at the front of the car and water leaks at the vent wing are typical problems on Targa models.
Resources for the Repair and Maintenance of your 1991 Porsche 911
1991 Porsche 911
1991 Porsche 911 Problems
Check Engine Light illumination and performance issues can be caused by oxygen sensor faults.
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.
An external fluid leak may develop at the pressure switch; fluid will be evident in the trunk and the reservoir level will drop.
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.
1991 Porsche 911 Recalls (Recent)
Summary: 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.Learn more »
Summary: THE BALL SOCKETS ON THE CRUISE CONTROL LINKAGE CAN BREAK, ALLOWING THE CRUISE CONTROL LINKAGE TO BECOME DETACHED ON ONE END AND JAM ON NEARBY COMPONENTS, WHICH COULD IMPAIR THROTTLE PLATE OPERATION.Learn more »
Summary: 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.Learn more »
1991 Porsche 911 Questions and Answers
my battery is dead on my 911 how do i charge battery when i can't open hood?
I'm looking to replace the lamps (internal to the headlight unit) only, not the entire headlight unit