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.
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HOMESERVICE MANUALSSAAB20039-3 CONVERTIBLE (9400) L4-2.0L TURBO (2.0 HOT)REPAIR AND DIAGNOSISTRANSMISSION AND DRIVETRAINAUTOMATIC TRANSMISSION/TRANSAXLEDESCRIPTION AND OPERATIONPOWER FLOWPOWER FLOW, 4TH GEAR
2003 Saab 9-3 Convertible (9400) L4-2.0L Turbo (2.0 HOT)
Power Flow, 4th Gear
2003 Saab 9-3 Convertible (9400) L4-2.0L Turbo (2.0 HOT)SECTION Power Flow, 4th Gear
Power flow, 4th gear
Selector lever in D
Primary shaft
The input shaft rotates clockwise and is connected to the rear planetary gear train's (P1) ring gear by clutch C1. The result is that the input shaft and the rear planetary gear train's ring gear rotate clockwise at the same speed.
Clutch C2 connects the input shaft and the sun wheel together so that they rotate clockwise as a unit. The inner planet gear does not rotate.
The entire primary shaft (planetary gear trains, P1 and P2) and the driving intermediate gear rotate clockwise as a unit.
Secondary shaft
Since the driving intermediate gears rotate clockwise, the driven intermediate gear and the lower planetary gear train's (P3) ring gear rotate anticlockwise as a unit.
Clutch C3 connects the planet carrier and sun wheel together.
The planetary gear train's ring gear, sun wheel, planet carrier and final drive pinion rotate anticlockwise as a unit at a higher speed than in 2nd gear.
RENDER: 1.0x
NO RELATED
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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.