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     UPDATED: February 13, 2023                       CONTACT       
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Below is a collection of Volvo vacuum connection diagrams I have located or (some) created from Volvo service manuals and other sources. 
I'm always looking for more diagrams to help our fellow Volvo owners who are having a tough time locating these. 

Additional vacuum diagrams can be found in my
Under Hood Vacuum Label Collection here.
There are lots of vacuum diagrams in various Volvo service manuals that I don't have, especially for 700-900 models.
If you have any diagrams not seen here, please consider sending me some pics.


Click to enlarge images
240 B21E/F 1975-77

240 B21F 1976-77 Ver.1

240 B21F 1976-77 Ver.2

240 B21E/F 1976-78

240 B21F 1976-78

240 B21F 1977 EGR

260 B27F 1977 EGR

240 260 B21F B27F 1977-  Delay Valve

240 B21F 1977 Distributor

240 B21E/F 1978 and later

240 B21 E/F 1978-79

240 B21E-F 1979-82
AC Idle Compensation

240 B21E-F 1979-82
AC Idle Compensation
240 B21E-F 1979-82
AC Idle Compensation

240 B21F-B23E unknown years EGR

240 B21F B23E 1980-84

240-260 B21A-F, B28 1980
(Charcoal Canister, Evap Control)

240 B21A manual 1980
(Evap Control)

240 B21A auto 1980
(Evap Control)

240 B21F 1980
(Evap Control)

240 B28F 1980
(Evap Control)

240 B21E 1981 and later

240 B21ET-FT 1981-83
(AC Idle Compensation)

240 B21F 1981 Idle Compensation
and Warm-up Valve

260 B28F 1981

260 B28F 1981 Ver 2

240 B21FT control pressure regulator

240 B21FT manifold 1

240 B21FT manifold 2

240 B21ET 1984-85 EGR

240 B21ET, B21FT Cruise Control

240 B21F-FT thermostatic (wax) valve

240/740 B21/B23/B230 throttle
body & evap. charcoal canister.

240/740 B21/B23/B230 throttle
body & evap. charcoal canister detail.

240 B23F throttle body, charcoal canister, roll-over valve, tank.

240 vent control diagram 1981 and later.

B230K (Solex carb) 1987

240 B23F LH Cruise Control 1983-84

  B230F LH Cruise Control 1985

B230F LH Cruise Control 1986+

B230F (unknown year) Cruise Control

B230 EGR Component Identification

FD Pulsair, EGR 1993+

S70/V70 (850) T5 1998

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