The fuel pump on your 1988 Chevy Celebrity is in the fuel tank.
The 1988 Chevrolet Celebrity uses distributor-less ignitions. Timing is controlled by the ECM, there is no provision for adjustments.
No there are shock absorbers on the rear.
The oil pressure sending switch on a 1988 Chevrolet Celebrity with 2.8L V6 is located on the bottom of the block near the oil filter.
Metal.
Your question is too broad to have a real specific answer. Some parts may exchange with other members of the A body production that year, Pontiac 6000, Buick Century and Oldsmobile Cierra. Some engine parts could interchange with Chevy S10, but not the entire engine.
R12 unless it's been converted.
Engine and engine parts: 1988 to 1995 Body parts : 1988 to 1999
If your 1988 Chevrolet Celebrity has the V6 engine the oxygen sensor is in the middle of the exhaust manifold nearest the firewall. If you have the 4 cylinder engine the oxygen sensor is located in the exhaust manifold just above the exhaust pipe flange.
It on the back of the coil packs going into the side of the block.
The 1988 Chevrolet Celebrity uses idistributorless ignition systems, the timing is controlled by the ECM. there is no provision for adjustment.
The firing order for all of the Chevy Celebrity 4 cylinder engines is: 1 3 4 2