Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

2002 Subaru Forester BaseFACTORY OEM SERVICE PROCEDURE

Test Methods

Temporarily attach the ST to a suitable place in the driver's compartment, remove the blind plug located in front of the toe board and pass the hose of the ST to the engine compartment.
ST 498575400 OIL PRESSURE GAUGE ASSEMBLY

Fig 1: Removing Blind Plug
Courtesy of SUBARU OF AMERICA, INC.
Remove the test plug and install ST instead.
ST 498897200 OIL PRESSURE GAUGE ADAPTER

Fig 2: Removing Test Plug
Courtesy of SUBARU OF AMERICA, INC.
Connect ST1 with ST2.
ST1 498897200: OIL PRESSURE GAUGE ADAPTER

ST2 498575400: OIL PRESSURE GAUGE ASSEMBLY
Check for duty ratio changes by opening and closing throttle valve using Subaru Select Monitor.
1. Insert the cartridge to Subaru Select Monitor. Refer to PREPARATION TOOL .
  
  Fig 3: Inserting Cartridge To Subaru Select Monitor
  Courtesy of SUBARU OF AMERICA, INC.
2. Connect Subaru Select Monitor to data link connector.
Check line pressure in accordance with the following chart.

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.