One, located on the Y pipe well before you reach the catalytic converter. You should be able to see it under the vehicle just behind the engine on the exhaust.
There are many sensors that can trip the check engine light to come on.
TWO.
three
A 1998 Chevy S10 Blazer has a total of two oxygen sensors. One is used for the upstream and one for the downstream.
The 2000 Blazer with the 4.3 engine has one coil.
Assuming this is the 4.3L engine, one.
how many oxygen cencors does the 1994 Chevy blazer have
There are approximately 2 oxygen sensors on a 2005 Chevrolet Astro van. The oxygen sensors can be purchased at stores such as NAPA.
There are to freeze plugs in the back of your 1996 Chevrolet blazer. There is a freeze plug on each side of the vehicle.
6
It has 1 coolant sensor, 1 temperature sensor
It has ( one oxygen sensor ) on the 1991 and 1992 Ford Explorers