Why it matters: O2 sensors feed critical data to your ECU, helping maintain the ideal air-fuel ratio for performance, efficiency, and emissions control. Reading the signals: Healthy upstream sensors ...

In 2026, OBD1-era trucks are experiencing a resurgence as enthusiasts embrace hands-on diagnostics and modern upgrades to keep these classics running strong. From testing oil pressure sensors and cam ...

Dive into The Register's online archive of incisive tech news reporting, features, and analysis dating back to 1998 ...