Yes
Does your 1986 Chevy Celebrity have the 2.5L 4 cylinder engine or the 2.8L V6?
The signal flasher on all versions of the Chevy Celebrity is on the fuse block.
I am presuming you mean the pcv valve, it is in the valve cover.
OEM tires were most likely 215/75R14s
it will be mounted at the harmonic balancer on the bottom and front of the engine
There is no 1994 Chevy Celebrity. The Celebrity was discontinued in 1989, with the exception of the station wagon which remained in production through 1990. Assuming you mean 1984, depending on which engine it is, very easy or slightly difficult.
1or 2 holds up the hood or if wagon rear glass
Chevrolet doesn't use fuel cut off switches.
The knock sensor is on the left side of the block below the exhaust manifold.
To give you an answer we need to know more specifically what the problem you are trying to repair is.
Any Chevy Celebrity sedan or station wagon front door from 1982 to 1989 should fit and work correctly. Sedan back doors will not work on a station wagon, station wagon rear doors wont work on a sedan. The window frames are slightly different. I would look for them in a wrecking yard.