O2 Sensor Wire
WARNING: This page does not describe the selected car, but rather 25 other vehicles, including the 1992 Oldsmobile Bravada, 1992 GMC Vandura Special, 1992 GMC Vandura, 1992 GMC Value Van, and 1992 GMC Sonoma. However, it is still accessible from the selected car via links, so may be relevant.
O2 sensor wire may be mispositioned and touching exhaust manifold. Check for ground between sensor and wire connector.
O2 sensor wire may be mispositioned and touching exhaust manifold. Check for ground between sensor and wire connector.