PCV valve is located inside a rubber tube that is in between the carb and the top of the valve cover. It's there, just hard to see since it's mostly covered by the rubber tube.
The fuel filter on a 1987 Chevy Celebrity is next to the fuel tank on the driver's side of the car/
The filter is on the drivers side under the car near the fuel tank.
The transmission uses a cable for linkage. If the car has consol shift the cable runs from the shifter to the transaxle. If it is a column shift the cable runs from a lever on the column to the transaxle.
The computer is mounted to the firewall on the inside of the car behind the globe box.
I had a similar experience with my 1987 Chevy Celebrity. In my car's case I replaced the ignition module and the crankshaft position sensor. Between the two the problem seems to be fixed.
if this happens at a certain speed it's probably the alignment of the tires.
The location of the EGR valve on a 1987 to 1989 Chevy Celebrity depends on which engine the car has. If the car has the 2.8L V6 the EGR valve mounts to the plenum near the throttle body. If the car has the 2.5L 4 cylinder engine the EGR valve mounts in the center of the intake manifold near the valve cover.
On a 1985 Chevy Celebrity the mass air flow sensor relay is located on the strut tower on the drivers side of the car. It is behind a cover. The fuse for the mass air flow sensor is also there with the relay.
You need to be more specific. What year is your Chevy Celebrity and is it on the front or rear of the car?
There are multiple things that can go wrong with cruise control, you need to be more specific as to what is wrong with the cruise control in your car.
Which engine does your car have?
The Chevy Celebrity is an "A" body car. Other "A" body cars included Pontiac 6000, Buick Century and Oldsmobile Calais. The fore runner for "A" body cars was the Chevy Citation.