There are 4 of them, on the exhaust manifolds and system. I replaced mine only to find out the real issue was the intake manifold plenum gasket.
SOURCE: 01 olds aurora
bank 1 sensor 1 will be in exhaust manifold by firewall in the middle. bank 1 sensor 2 will be behind convertor .bank 2 sensor 1 will be in the front manifold down at the end of it
SOURCE: o2 sensor
If you can't access it from from the engine compartment you will need to jack the car up and support it. You need a 7/8 box end wrench. Sometimes it take a special wrench due to the angle not accessable with a strait wrench. Its on the exhaust pipe in front of the cat
SOURCE: 01 olds aurora 4.0 low coolant light on. Where is
The coolant level sensor is inside the coolant bottle. It is not replaceable separately. You will have to replace the reservoir to replace the sensor.
SOURCE: How many o2 sensors have a 2001 Oldsmolbile aurora
4.0 engine or 3.5?
On the 4.0 there are 4 sensors, some up front between the engine and radiator, some between the engine and firewall.
Caution, I replaced all of mine to fix a problem because they weren't reading. None of them were bad. Turned out to be a cracked intake plenum gasket which was only $30.00 and a lot easier to replace. Live and learn.
1,338 views
Usually answered in minutes!
×