Where are the vacuum bellows on Volvo 940?

The vacuum bellows on a Volvo 940 are typically located on the intake manifold and are part of the vehicle's vacuum system. They serve to control various components, such as the heating and ventilation system or the engine's air intake. Check the engine bay for any rubber bellows or hoses connected to the manifold for the vacuum lines. If you're having issues, it’s advisable to inspect these areas for any signs of wear or leaks.