Depending on whether you have the v6 or 4 cylinder:
V6 - Right up front behind the radiator. Slide under the vehicle about a foot and a half or two feet at the dead center from the front bumper. Then look about 1 foot to your right and you should see it.
4 cyl - I don't have this vehicle but the manual states it "is at the back of the engine, it is impossible to reach it from above. It is almost as impossible to reach it from below. It may be easiest to remove the right front wheel and reach through the fender opening to get at it."
The oxygen sensor on a 1989 Chevy Celebrity is located in the rear exhaust manifold on top about the center.
The thermostat on a 1989 Chevy Celebrity is located under the water outlet fitting. Follow the upper radiator hose, it will end at the water outlet.
The petcock on a 1989 Chevy Celebrity is at the bottom of the radiator on the drivers side.
in the fuel tank
There is no cabin filter on a 1989 Chevy Silverado.
On all models of Chevrolet Celebrity with fuel injection the fuel pump is inside the fuel tank.
It is located on the driver side. Right below the second door.
Looking in my factory service manual for a 1989 Chevy Celebrity I found no reference to an accessory relay.
The spark plug gap for your 1989 Chevy Celebrity 2.8 V6 is .045".
The computer is mounted to the firewall on the inside of the car behind the globe box.
It is behind a cover on the driver side strut tower.
The 1989 Chevy Celebrity V6 is rated at 130 hp.
It sounds like your engine is not getting enough fuel, try checking the fuel filter.
Under hood fuses are generally located next to the relay they are for.
It is located on the top center of the exhaust manifold on the firewall side of the engine.
According to my factory service manual the horn relay for a 1989 Chevy Celebrity is located in the "convenience center" which is behind the instrument panel on the left side of the steering wheel. To replace the relay one would simply pull out the old relay and plug in the new relay.
oil filter is inside engine compartment front left fender by the head light
The engine control computer, ECM, is located on the inside of the firewall directly behind the glove box.
on the side of the transmission
There is no fuse on the alternator.
No Chevy Celebrity ever had a 4.0L engine
Are you asking about the starter solenoid? If yes it is on the starter. If you are not asking about the starter solenoid what are you asking about?
The oxygen sensor is in the middle of the exhaust manifold near the firewall.
where is fuel filter ?Underneath your hood, behind the passenger side headlight, behind the core support, is a bank of 2-8 relays. One of those relays is the relay needed for your fuel pump. There will also be a fuel pump relay fuse located there.
The mass air flow sensor is in the air duct between the air filter canister and the throttle body on the plenum.