there are 4 O2 sensors(2 on each side of the exhaust). They are located on the Y pipe which connects to the exhaust manifold, 1 before the catalytic converter and 1 after the catalytic converter on each side, just look under car and follow the exhaust back towards the front and you will see them
The upstream heated oxygen sensor is located ahead of the catalytic converter The downstream heated oxygen sensor is located behind the converter
The oxygen sensor is located in the exhaust manifold near the firewall. It is easier to get to the sensor from under the vehicle.
The oxygen sensor on a 1999 Honda Civic is located on top of the catalytic converter. The catalytic converter is under the car.
The upstream oxygen sensor is located in the exhaust pipe between the exhaust manifold and the catalytic converter The downstream oxygen sensor is located at the catalytic converter outlet
where is located ford expedition 1999 relays
On a 1999 Ford Expedition : The Mass Air Flow sensor is between the engine air filter and the large diameter engine air intake tube ( it is INSIDE a round shaped plastic housing )
The sensor for the rear wheels are located on the brake shoe backing plate if you have drum brakes on the rear. The front brake sensor is located next to the caliper. The same if you have rear disc brakes.
How many oxygen sensor on your 1999 3.5 rl?
The oxygen sensor on the 1999 Oldsmobile Cutlass Sierra is located on the lower exhaust. If you need to replace it, they are available for about $20 online.
They are located on the passenger side. Sensor1 is right past the exhaust manifold, and sensor 2 is after the cat.
There are two, one on each side of the catalytic converter.
there are 2 and they are both under the vehichle on the exaust manifold