Most modern Toyotas use a M8x1.0 nut for the O2 sensor flange bolts.
On the 98 u have two oxygen sensors an upstream and a downstream. The upstream oxygen sensor is located closer to the front of the truck by the transmission. The downstream oxygen sensor is located on down torwards the back of the truck along the side of the frame.
The upstream O2 sensor is mounted in the ehxaust manifold The downstream O2 sensor is mounted in the exhaust pipe after the catalytic converter
The upstream O2 sensor is mounted in the ehxaust manifold The downstream O2 sensor is mounted in the exhaust pipe after the catalytic converter
The upstream O2 sensor is mounted in the ehxaust manifold The downstream O2 sensor is mounted in the exhaust pipe after the catalytic converter
The upstream O2 sensor is mounted in the ehxaust manifold The downstream O2 sensor is mounted in the exhaust pipe after the catalytic converter
Bank #1 is the passenger side of the engine , and sensor # 2 is in the exhaust after the catalytic converter ( downstream )
On most ford escorts, the oxygen sensor is located under the hood, on the exhaust manifold or the exhaust pipe. You'll have to look down between the engine and radiator.
On a 1998 Hyundai Accent, the oxygen sensor (O2 sensor) is typically located in the exhaust system. There are usually two: one before the catalytic converter (upstream) and another after it (downstream). The upstream sensor is generally found on the exhaust manifold or just after it, while the downstream sensor is located near the catalytic converter. To access it, you may need to lift the vehicle for better visibility.
The oxygen sensor on a 1998 Pontiac Grand Prix is typically located in the exhaust system. There are usually two sensors: one before the catalytic converter (upstream) and one after it (downstream). To locate them, follow the exhaust pipe from the engine; the upstream sensor is near the engine, while the downstream sensor is closer to the rear of the vehicle. A video tutorial can provide a visual guide for precise locations and the removal process.
P0141 - downstream heated O2 sensor heater circuit fault ( Bank 1 ) according to my Haynes repair manual ----------------------------------------------------------------------------------------- P.S. bank 1 is the passenger side of the engine , the downstream oxygen sensor is after the catalytic converter ( or sensor 2 )
To change the oxygen sensor in a 1998 Toyota T100, first, locate the sensor, which is typically found on the exhaust manifold or downstream in the exhaust system. Disconnect the negative battery terminal and then unplug the sensor's electrical connector. Use an oxygen sensor socket or a wrench to unscrew the old sensor, and then install the new sensor by threading it in place and tightening it securely. Finally, reconnect the electrical connector and the negative battery terminal.
I believe there are 2 oxygen sensors that are used for air / fuel ratio and 2 oxygen sensors that are downstream from the catalytic converters and are called catalyst monitors