Log In
Search suggestions

    My Vehicles

    2002 Lexus IS300 3.0L SFI DOHC 6cyl

    My Store

    405 N COLLEGE ST
    (479) 443-4043

    OPEN 'til 10:00 PM today

    SAVE 20% ON ONLINE SHIP-TO-HOME ORDERS OF $100 OR MORE.

    Use Code: SEECLEAR

    See Details

    Honda Accord/Prelude 1984-1995 Repair Guide

    VACUUM DIAGRAMS

    Print

    See Figure 1

    The engine and emission control system covered by this information operate on a combination of vacuum and electrical signals; they are extremely prone to malfunctions due to improper vacuum connections. If a component does not receive vacuum at the correct time, it cannot function when needed. When working under the hood, pay close attention to the routing and placement of every hose.



    Click image to see an enlarged view

    Fig. Fig. 1: The vacuum hoses are usually numbered for easy identification

    Following is a listing of vacuum diagrams for most of the engine and emissions package combinations covered by this information. Because vacuum circuits will vary based on various engine and vehicle options, always refer first to the vehicle emission control information label, if present. Should the label be missing, or should vehicle be equipped with a different engine from the car's original equipment, refer to the diagrams below for the same or similar configuration.

    If you wish to obtain a replacement emissions label, most manufacturers make these labels available for purchase. The labels can usually be ordered from a local dealer.

    See Figures 2 through 75





    Click image to see an enlarged view

    Fig. Fig. 2: Vacuum hose routing-1984 Accord

     


    Click image to see an enlarged view

    Fig. Fig. 3: Emission component schematic-1984 Accord

     


    Click image to see an enlarged view

    Fig. Fig. 4: Vacuum hose routing-1985 carbureted Accord

     


    Click image to see an enlarged view

    Fig. Fig. 5: Emission component schematic-1985 carbureted Accord

     


    Click image to see an enlarged view

    Fig. Fig. 6: Vacuum hose routing-1985 fuel injected Accord

     


    Click image to see an enlarged view

    Fig. Fig. 7: Vacuum hose routing-1986 carbureted Accord with manual transaxle

     


    Click image to see an enlarged view

    Fig. Fig. 8: Vacuum hose routing-1986 carbureted Accord with automatic transaxle

     


    Click image to see an enlarged view

    Fig. Fig. 9: Emission component schematic-1986 carbureted Accord with manual transaxle

     


    Click image to see an enlarged view

    Fig. Fig. 10: Emission component schematic-1986 carbureted Accord with automatic transaxle

     


    Click image to see an enlarged view

    Fig. Fig. 11: Vacuum hose routing-1986 fuel injected Accord

     


    Click image to see an enlarged view

    Fig. Fig. 12: Emission component schematic-1986 fuel injected Accord

     


    Click image to see an enlarged view

    Fig. Fig. 13: Vacuum hose routing-1987 carbureted Accord with manual transaxle

     


    Click image to see an enlarged view

    Fig. Fig. 14: Vacuum hose routing-1987 carbureted Accord with automatic transaxle

     


    Click image to see an enlarged view

    Fig. Fig. 15: Emission component schematic-1987 carbureted Accord with manual transaxle

     


    Click image to see an enlarged view

    Fig. Fig. 16: Emission component schematic-1987 carbureted Accord with automatic transaxle

     


    Click image to see an enlarged view

    Fig. Fig. 17: Vacuum hose routing-1987 fuel injected Accord

     


    Click image to see an enlarged view

    Fig. Fig. 18: Vacuum hose routing-1988 carbureted Accord with manual transaxle

     


    Click image to see an enlarged view

    Fig. Fig. 19: Vacuum hose routing-1988 carbureted Accord with automatic transaxle

     


    Click image to see an enlarged view

    Fig. Fig. 20: Emission component schematic-1988 carbureted Accord with manual transaxle

     


    Click image to see an enlarged view

    Fig. Fig. 21: Emission component schematic-1988 carbureted Accord with automatic transaxle

     


    Click image to see an enlarged view

    Fig. Fig. 22: Vacuum hose routing-1988 fuel injected Accord

     


    Click image to see an enlarged view

    Fig. Fig. 23: Emission component schematic-1988 fuel injected Accord

     


    Click image to see an enlarged view

    Fig. Fig. 24: Vacuum hose routing-1989 carbureted Accord with manual transaxle

     


    Click image to see an enlarged view

    Fig. Fig. 25: Emission component schematic-1989 carbureted Accord with manual transaxle

     


    Click image to see an enlarged view

    Fig. Fig. 26: Emission component schematic-1989 carbureted Accord with automatic transaxle

     


    Click image to see an enlarged view

    Fig. Fig. 27: Vacuum hose routing-1989 fuel injected Accord

     


    Click image to see an enlarged view

    Fig. Fig. 28: Emission component schematic-1989 fuel injected Accord

     


    Click image to see an enlarged view

    Fig. Fig. 29: Vacuum hose routing-1990 Accord

     


    Click image to see an enlarged view

    Fig. Fig. 30: Emission component schematic-1990 Accord

     


    Click image to see an enlarged view

    Fig. Fig. 31: Vacuum hose routing-1991 Accord except SE and EX-R

     


    Click image to see an enlarged view

    Fig. Fig. 32: Emission component schematic-1991 Accord except SE and EX-R

     


    Click image to see an enlarged view

    Fig. Fig. 33: Vacuum hose routing-1991 Accord SE and EX-R

     


    Click image to see an enlarged view

    Fig. Fig. 34: Emission component schematic-1991 Accord SE and EX-R

     


    Click image to see an enlarged view

    Fig. Fig. 35: Vacuum hose routing-1992-93 Accord DX and LX (LX and EX in Canada)

     


    Click image to see an enlarged view

    Fig. Fig. 36: Emission component schematic-1992-93 Accord DX and LX (LX and EX in Canada)

     


    Click image to see an enlarged view

    Fig. Fig. 37: Vacuum hose routing-1992-93 Accord EX (EX-R in Canada)

     


    Click image to see an enlarged view

    Fig. Fig. 38: Vacuum hose routing-1994-95 Accord with F22B1 engine (except EX with F22B1-21)

     


    Click image to see an enlarged view

    Fig. Fig. 39: Emission component schematic-1994-95 Accord with F22B1 engine (except EX with F22B1-21)

     


    Click image to see an enlarged view

    Fig. Fig. 40: Vacuum hose routing-1994-95 Accord EX with F22B1-21 engine

     


    Click image to see an enlarged view

    Fig. Fig. 41: Emission component schematic-1994-95 Accord EX with F22B1-21 engine

     


    Click image to see an enlarged view

    Fig. Fig. 42: Vacuum hose routing-1994-95 Accord with F22B2 engine

     


    Click image to see an enlarged view

    Fig. Fig. 43: Emission component schematic-1994-95 Accord with F22B2 engine

     


    Click image to see an enlarged view

    Fig. Fig. 44: Vacuum hose routing-1995 Accord V-6

     


    Click image to see an enlarged view

    Fig. Fig. 45: Emission component schematic-1995 Accord V-6

     


    Click image to see an enlarged view

    Fig. Fig. 46: Vacuum hose routing-1984-85 carbureted Prelude

     


    Click image to see an enlarged view

    Fig. Fig. 47: Emission component schematic-1984-85 carbureted Prelude

     


    Click image to see an enlarged view

    Fig. Fig. 48: Vacuum hose routing-1985 fuel injected Prelude

     


    Click image to see an enlarged view

    Fig. Fig. 49: Emission component schematic-1985 fuel injected Prelude

     


    Click image to see an enlarged view

    Fig. Fig. 50: Vacuum hose routing-1986 carbureted Prelude

     


    Click image to see an enlarged view

    Fig. Fig. 51: Emission component schematic-1986 carbureted Prelude

     


    Click image to see an enlarged view

    Fig. Fig. 52: Vacuum hose routing-1986 fuel injected Prelude

     


    Click image to see an enlarged view

    Fig. Fig. 53: Emission component schematic-1986 fuel injected Prelude

     


    Click image to see an enlarged view

    Fig. Fig. 54: Vacuum hose routing-1987 carbureted Prelude

     


    Click image to see an enlarged view

    Fig. Fig. 55: Emission component schematic-1987 carbureted Prelude

     


    Click image to see an enlarged view

    Fig. Fig. 56: Vacuum hose routing-1987 fuel injected Prelude

     


    Click image to see an enlarged view

    Fig. Fig. 57: Vacuum hose routing-1988 carbureted Prelude (except California)

     


    Click image to see an enlarged view

    Fig. Fig. 58: Vacuum hose routing-1988 carbureted Prelude (California)

     


    Click image to see an enlarged view

    Fig. Fig. 59: Emission component schematic-1988 carbureted Prelude

     


    Click image to see an enlarged view

    Fig. Fig. 60: Vacuum hose routing-1988 fuel injected Prelude

     


    Click image to see an enlarged view

    Fig. Fig. 61: Emission component schematic-1988 fuel injected Prelude

     


    Click image to see an enlarged view

    Fig. Fig. 62: Vacuum hose routing-1989 carbureted Prelude (except California)

     


    Click image to see an enlarged view

    Fig. Fig. 63: Vacuum hose routing-1989 carbureted Prelude (California)

     


    Click image to see an enlarged view

    Fig. Fig. 64: Emission component schematic-1989 carbureted Prelude

     


    Click image to see an enlarged view

    Fig. Fig. 65: Vacuum hose routing-1989 fuel injected Prelude

     


    Click image to see an enlarged view

    Fig. Fig. 66: Vacuum hose routing-1990 carbureted Prelude (California)

     


    Click image to see an enlarged view

    Fig. Fig. 67: Emission component schematic-1990 carbureted Prelude

     


    Click image to see an enlarged view

    Fig. Fig. 68: Vacuum hose routing-1990-91 fuel injected Prelude (2.0L engine)

     


    Click image to see an enlarged view

    Fig. Fig. 69: Emission component schematic-1990-91 fuel injected Prelude (2.0L engine)

     


    Click image to see an enlarged view

    Fig. Fig. 70: Vacuum hose routing-1990-91 fuel injected Prelude (2.1L engine)

     


    Click image to see an enlarged view

    Fig. Fig. 71: Emission component schematic-1990-91 fuel injected Prelude (2.1L engine)

     


    Click image to see an enlarged view

    Fig. Fig. 72: Vacuum hose routing-1992-95 Prelude with H23A1 and H22A1 engines

     


    Click image to see an enlarged view

    Fig. Fig. 73: Vacuum hose routing-1992-95 Prelude with F22A1 engine

     


    Click image to see an enlarged view

    Fig. Fig. 74: Emission component schematic-1992-95 Prelude with H23A1 and H22A1 engines

     


    Click image to see an enlarged view

    Fig. Fig. 75: Emission component schematic-1992-95 Prelude with F22A1 engine

     

     
    AutoZone Logo