Are you asking about an engine misfire? If so you can use an inductive timing light to determine which cylinder is not getting any spark.
Misfire could be caused by:
Bad spark plug.
Bad spark plug wire.
Bad coil. If it is the coil then two cylinders would misfire.
The MAP sensor on a 1987 Chevy Celebrity is mounted to the firewall near the right fender.
The timing on y our 1987 Chevy Celebrity is controlled by the engine computer, there is no way provided to adjust it.
The idle speed on a 1987 Chevy Celebrity is controlled by the engine computer, there is no way provided to adjust it.
The fuel filter on a 1987 Chevy Celebrity is next to the fuel tank on the driver's side of the car/
no
The heater core in a 1987 Chevy Celebrity is in the heater plenum to the right of the hump and below the glove compartment.
The timing on a 1987 Chevy Celebrity is controlled by the engine control module, there is no provision for adjustment.
Here is a fact sheet on the Chevy celebrity http://auto.howstuffworks.com/Chevrolet-celebrity.htm/printable I found this really interesting
It is the main computer box.
Yes
Camshaft sensors were not used on any of the Chevy Celebrity 2.5L, 2.8L or 3.1L engines
There is no MAF on a 1987 Chevy 2.5L engine.