925

Often difficult to engage 1st gear
Adjust the shift coupler as on manual car. Replace worn bushings if necessary.

‘Grabbing’ shifting from neutral/rough shifting
This is often the result of a poorly adjusted vacuum switch, which is attached to the intake manifold. An adjustment screw hardens and softens the clutch take-up.

The car becomes stuck in gear after being engaged for a few minutes

Produced from 1968 to around sometime in 1980, the Sportomatic transmission was based on two gearbox models, Type 905 and 925. Unlike a conventional automatic transmission, the system can be described as a 'clutchless manual' gearbox.

With the introduction of the more powerful 2.4 engines in the 1972 model year in the 911E and 911S, the 905 transmission was no longer strong enough to handle the increased torque from the larger displacement engines. A new Sportomatic transmission was introduced in there cars, the Type 925, which is based on the 915 manual transmission. The following differences can be noted:

• Larger diameter torque converter and clutch
• Larger crown wheel and pinion assembly
• Stronger differential