1990 Ford Probe GL, AutomaticFACTORY OEM SERVICE PROCEDURE

Fuel Pressure

1990 FUEL PRESSURE SPECIFICATIONS (EEC-IV - CARS)

Engine KOER psi (kg/cm2 ) KOEO psi (kg/cm2 )
1.9L CFI 13-17 (0.9-1.2) 13-17 (0.9-1.2)
2.3L HSC EFI 45-60 (3.2-4.2) 50-60 (3.5-4.2)
2.5L CFI 35-55 (2.5-3.9) 35-55 (2.5-3.9)
3.0L SHO SEFI 28-33 (2.0-2.3) 30-45 (2.1-3.2)
3.8L SC SEFI 30-40 (2.1-2.8) 35-40 (2.5-2.8)
All Others 30-45 (2.1-3.2) 35-40 (2.5-2.8)
1990 FUEL PRESSURE SPECIFICATIONS (EEC-IV - TRUCKS)

Engine KOER psi (kg/cm2 ) KOEO psi (kg/cm2 )
4.9L EFI 45-60 (3.2-4.2) 50-60 (3.5-4.2)
All Others 30-45 (2.1-3.2) 35-45 (2.5-3.2)
1990 FUEL PRESSURE SPECIFICATIONS (DIESEL - TRUCKS)

Engine KOER psi (kg/cm2 ) KOEO psi (kg/cm2 )
7.3L 41-55 (2.9-3.9) NA
1990 FUEL PRESSURE SPECIFICATIONS (EEC - CARS)

Engine KOER psi (kg/cm2 ) KOEO psi (kg/cm2 )
1.3L 25-31 (1.8-2.2) 64-85 (4.5-6.0)
1.8L 30-37 (2.1-2.6) 35-45 (2.5-3.2)
2.2L 27-40 (1.9-2.8) 64-85 (4.5-6.0)
2.2L Turbo 27-40 (1.9-2.8) 64-85 (4.5-6.0)
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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