Autometer Air Drive Non-OBD2: What It Means for Your Classic Car

The Autometer Air Drive system is a popular choice for classic car enthusiasts who want to add accurate gauges to their vehicles. However, these systems are typically non-OBD2, which can raise questions for those used to more modern diagnostic setups. This article delves into the world of Autometer Air Drive, explaining what it means for your classic car and how it functions without OBD2 connectivity.

Understanding Autometer Air Drive

The Autometer Air Drive system is a unique approach to vehicle instrumentation, relying on air pressure instead of electrical signals to transmit data to gauges. This method, while seemingly old-school, provides several benefits, especially for classic cars.

How Air Drive Works

At the core of the Air Drive system are sending units installed on the engine. These units convert physical parameters like oil pressure, water temperature, or transmission fluid pressure into corresponding air pressure signals. These signals are then sent through dedicated nylon tubing to the gauges mounted on the dashboard.

Advantages of Air Drive for Classic Cars

• Electrical System Simplicity: By minimizing electrical connections, Air Drive reduces the complexity often associated with installing gauges in older vehicles with less sophisticated electrical systems.
• Accurate Readings: Air pressure signals are less susceptible to electrical interference, ensuring accurate gauge readings even in environments with fluctuating electrical currents.
• Classic Aesthetics: Many gauges designed for Air Drive systems boast a classic look and feel, perfectly complementing the interior of vintage vehicles.

Autometer Air Drive and the Absence of OBD2

OBD2 (On-Board Diagnostics II) is a standardized system found in most vehicles manufactured after 1996. It provides a wealth of data about a vehicle’s performance and emissions systems through a standardized connector. However, classic cars predate this technology, making OBD2 compatibility a non-issue for Autometer Air Drive.

Why OBD2 Doesn’t Apply

The Autometer Air Drive system, designed specifically for older vehicles, operates independently of any computer network, including OBD2. The mechanical nature of air pressure transmission eliminates the need for digital communication protocols used in OBD2 systems.

Troubleshooting Autometer Air Drive Systems

While generally reliable, like any mechanical system, Air Drive can encounter issues. Here are common troubleshooting tips:

• Check for Leaks: Inspect the nylon tubing for any signs of damage, kinks, or loose connections that could cause air pressure leaks, leading to inaccurate gauge readings.
• Verify Sending Unit Operation: Ensure the sending units are properly connected and functioning correctly. This may involve testing their output using a pressure gauge.
• Gauge Calibration: If the gauges themselves are suspected to be faulty, consult Autometer’s documentation for calibration procedures or seek professional assistance.

Conclusion

The Autometer Air Drive system, while not OBD2 compatible, provides a reliable and aesthetically pleasing way to monitor critical engine parameters in classic cars. By understanding its mechanics and potential troubleshooting points, classic car owners can enjoy the benefits of accurate and stylish instrumentation.