Cruise Control

Fits:
Porsche 911 1984-87
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Diagram ref no 22
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91161712407
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- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
High-Quality Cruise Control Components for Smooth, Comfortable & Efficient Driving
Cruise control systems enhance driving comfort by automatically maintaining a set vehicle speed without the need to keep your foot on the accelerator. Essential for long motorway journeys, performance touring and modern driving convenience, cruise control components include modules, switches, actuators, relays and wiring elements—all working together to regulate speed accurately and safely.
Whether you're repairing a faulty system, upgrading an older vehicle or restoring a classic Porsche with modern convenience features, high-quality cruise control parts ensure smooth operation and reliable performance.
What Cruise Control Components Do
Cruise control systems support driving comfort and
efficiency through several key functions:
- Maintain
a steady vehicle speed without pedal input
- Improve
fuel efficiency by reducing unnecessary speed fluctuations
- Reduce
driver fatigue during long-distance travel
- Integrate
with engine and throttle systems for precise speed control
- Allow
easy adjustments via steering column or dashboard-mounted switches
- Support modern safety systems such as speed limiters and adaptive control (where equipped)
Each component—from the control module to the actuator—plays a vital role in regulating vehicle speed smoothly and safely.
Why Cruise Control Systems Commonly Fail
Cruise control relies on a network of electrical contacts,
sensors and mechanical actuators. Failures often occur due to:
- Faulty
switches or stalk controls causing intermittent activation
- Damaged
wiring or connectors interrupting communication with the module
- Failed
control modules due to internal electronic faults
- Vacuum
leaks affecting older vacuum-based actuator systems
- Throttle
actuator issues preventing stable speed regulation
- Blown
fuses or defective relays disrupting power supply
- Brake switch faults causing cruise control to disengage unexpectedly
Symptoms may include cruise control not activating, speed dropping out, inconsistent operation or dashboard warning lights.
Why You Should Replace Worn or Faulty Cruise Control Parts
Replacing damaged or outdated cruise control components with high-quality, precision-built alternatives engineered to match original performance characteristics ensures the system operates safely and reliably.
Key benefits include:
- Restored smooth and stable speed control
- Improved comfort during long journeys
- Enhanced fuel efficiency with consistent cruising
- Reduced driver fatigue and improved road safety
- Reliable integration with throttle, brake and electrical systems
- Reinstatement of convenience features on restored or upgraded vehicles
A functioning cruise control system adds comfort, efficiency and modern usability to both classic and contemporary models.