1991 Porsche 911 Turbo Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1991 Porsche 911 Turbo
1991 Porsche 911 Turbo Problems
The accumulation of moisture at major connectors and control units can cause various ABS/PDAS faults due to corrosion.
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 accumulation of small air leaks at various locations around the intake manifold/intercooler area can cause performance problems.