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They are screewed into the exhaust pipe/pipes. There about 3 to 4 inches long and have an electric wire hooked to them. Start looking up close to the engine were the exhaust pipes bolt to the engine and working your way back towards the muffler and you'll see them. There will not be any after the muffler. I believe there's 2 on that year.
What else can I help you with?
Where is the O2 sensor on a 1990 Chevy Lumina?
The oxygen sensor is usually mounted in the exhaust manifold pretty close to where the exhaust pipe bolts on.
Where is the oxygen sensor on a 1990 Chevy silverado 4x4?
It is in the exhaust pipe where it comes off of the engine on the passanger side.
Where is the oxygen sensor on a 1990 Buick Le Sabre 3800?
The 1990 Buick LeSabre oxygen sensor is located on the outside of the air cleaner housing. The oxygen sensor will be on the back side of the housing.
Where is the oxygen sensor on a 1990 Lexus es250?
on the exhaust
Where is the oxygen sensor located on a 1990 pulsar?
=on your head=
Where is the afm sensor on 1990 Chevy S-10?
how do you install a 1994 Chevy prism ignition
Where is the oxygen sensor on 1990 Toyota Corolla?
under the hood
Where is the oxygen sensor on a 1990 pathfinder located?
The oxygen sensor is located on the exhaust manifold and is the only item on the exhaust with wires going to it.
Position of knock sensor on 1990 GMC Sierra K1500?
It is screewed in the engine block over by the starter.
Where is oxygen sensor on lumina 3.1 engine 1990?
behind the engine
Where is the Oxygen sensor on a 1990 cadillac 4.5?
located on the exhaust manifolds
How do you change the speed sensor on 1990 Chevy Celebrity?
The speed sensor on a 1990 Chevy Celebrity is on the top of the transaxle on the passenger side of the car. To change it unlatch and remove the wire harness then remove the two bolts that hold it in. The speed sensor can then be lifted out of the transaxle. To reinstall a new sensor reverse these steps.
