well the 90 3.1 is the same as the 2.8 where the coil pack module is located underneath the front exhaust manifold to replace the module u have to take out all 3 coils leave the park plug wires connected and then disconnect the wires to the module and take out a couple of bolts and just replace it the way it was
yes, most external parts on a 2.8 will fit a 3.1, but not a 3100 V6
Vacuum leak
Yes that car has a timing belt
The curb weight of the 1990 Chevrolet Cavalier base sedan is 2,444 pounds. The fuel tank holds 13.6 gallons, and it uses regular unleaded gas.
185/80R13 for sedans and coupes215/60R14 for Z24 coupe
Try looking on the head, on the passenger side of the throttle body
to the left of the wiper motor, a vacum hose and electrical connections are attacted to it
Drop fuel tank
The curb weight of the 1990 Chevrolet Cavalier base sedan is 2,444 pounds. The fuel tank holds 13.6 gallons, and it uses regular unleaded gas.
Blown fuse, defective fuel pump relay, or a worn out fuel pump.
check and see if you are getting fuel ,spark and compreesion these are the three main things if you have all of these repost
About 15 mpg on a 1990 Chevrolet suburban.