Fuel Pressure Test

Fuel Pump Module:

Fuel systems on these vehicles are equipped with a fuel tank module mounted, combination fuel filter/fuel pressure regulator. The fuel pressure regulator is not controlled by engine vacuum.

With engine at idle speed, system fuel pressure should be approximately 241-310 kPa (35-45 psi).

Fuel Pressure Test Port:

1. Remove the protective cap at the fuel rail.

Fuel Pressure Test - Typical:

2. Connect the 0-414 kPa (0-60 psi) fuel pressure gauge (from Gauge Set 5069) to test port pressure fitting on fuel rail.

3. Note pressure gauge reading. Fuel pressure should be approximately 241-310 kPa (35-45 psi) at idle.

4. If pressure is at 0 psi, refer to No Trouble Code Tests in Computers and Control System.

If operating pressure is above 45 psi fuel pump is OK. Replace fuel filter/fuel pressure regulator assembly.