what would cause the fuel pressure to drop in an 1990 olds but it will run great sitting still
You either have a problem with the fuel pressure regulator or the fuel pump. Check the pressure regulator first.
If you mean fuel pressure drops when the gas pedal is hit then possible fuel filter clogged.
Looking for a Used Cutlass Supreme in your area?
CarGurus has 121 nationwide Cutlass Supreme listings and the tools to find you a great deal.
Search Oldsmobile Cutlass Supreme Questions
Oldsmobile Cutlass Supreme Experts
Related Models For Sale
Used Cars For Sale