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However, on the 1997 and 1998 900 turbo models (as well as the 99 9-3, except the Viggen model) there are 4 vacuum hoses that connect to the throttle body. You will need to remove the plastic engine cover to access these hoses. There should be a diagram of the vacuum hoses on an emissions label in the engine compartment of the vehicle.
*One hose goes from the throttle body to the turbo By-Pass Valve (BPV) located between the battery and the radiator.
*One hose goes from the throttle body to the fuel pressure regulator located on the fuel injector rail.
*One hose goes from the throttle body to a one-way valve (arrow on one-way valve points toward throttle body) and then to the Positive Crankcase Ventilation (PCV) fitting on the engine valve cover.
*One hose goes from the throttle body to the Manifold Absolute Pressure (MAP) sensor located on the strut tower brace.
REM in Seattle
2005 Saab 9-3 Aero Convertible; Steel Gray metallic; 5-speed; 27,000 miles
1998 Saab 900SET; Silver metallic; 5-door; Automatic; 113,000 miles
1984 Saab 900T; Cherry Red; 3-door; 5-speed; 242,000 miles (RIP)
REM in Seattle
2013 Volvo XC60 R-Design, Rebel Blue, 3.0L 6-cyl turbo, Automatic
2005 Saab 9-3 Aero Convertible, Steel Gray metallic, 2.0L 4-cyl turbo, 5-speed
1998 Saab 900SET 5-door, Silver, 2.0L 4-cyl turbo, Automatic
1991 Alfa Romeo Spider convertible, Alfa Red, 2.0L 4-cyl, 5-speed
1984 Saab 900T 3-door, Red, 2.0L 4-cyl turbo, 5-speed
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