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  1. #1

    Default 1983 3.8 vacuum line question

    Took the air cleaner assembly off the other day to reconnect the kickdown rod (little clip went MIA at some point). While I was doing that I noticed I had two plugged vacuum lines.

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    One goes to the dizzy and one to the carb. So I think I am missing the VACVV valve... does anyone have a picture of this so I know what I'm looking for (nothing obvious under the hood currently) or can I use a different check valve to get my vac advance reconnected? Any help is appreciated.

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  2. #2
    FEP Super Member xctasy's Avatar
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    Default

    No pictures to help, but you'll be pleased to know its Ford VECI device

    "Old 69", the Vacuum Vent Valve

    New technolgy, didn't have one on my 81 in my day....


    Since the Ford list is for Fords trained service people, and not people like us, I use an extensive Pre Port EFI 75 item HIT LIST "name and claim it" version of the list, which is based on a hard return, digitized version of http://myzephyrs.com/vac_part_name.htm


    A huge thanks to him

    1 A/CL: according to Ford, that IS the air cleaner
    2 A/CL DV: Air Cleaner Duct & Valve
    3 A/CL BI MET: Air Cleaner Bi-Metallic Valve
    4 A/CL CWM: Air Cleaner Cold Weather Modulator
    5 ACV: Air Control Valve
    6 AIR: This is a Secondary air injection Ford calls the Thermactor, short for Thermal Reactor. CA vehicles are installed with it as standard. Air Injection Reaction is what it stands for.
    The thermactor system consists mainly of the air pump, the air pump diverter and bypass valves, TAB and TAD solenoids (if equipped) and the catalytic converter.
    7 AIR BPV: Air Bypass Valve (aka Thermactor Air Bypass TAB)
    8 BV: Bowl Vent (on top of the float tanks)
    9 CARB: Carburetor
    10 CPRV: Canister Purge Valve ( PURGE CV
    11 DISTistributor of course.
    12 EGR: Exhaust Gas Recirculator
    13 EFCA: Electronic Fuel Control Assymbly
    14 FLTR: Filter
    15 FPR: Fuel Pressure Regulator
    16 IVV: Thermactor Idle Vacuum Valve
    17 MAN VAC: Indicating Manifold vacuum-Vacuum source
    18 MAP: Manifold Absolute Pressure
    19 SOL V: Solenoid Valve
    20 SV-CBV: Carburetor Fuel Bowl Solenoid Vent Valve
    21 VAC: short for Vacuum
    22 VCKV: Vacuum Check Valve
    23 VRESER: Vacuum Reservoir (Actually VRESER just stands for Vacuum Reservoir. It may or may not have a valve or Solenoid Valve inside it.
    24 VREST is a vacuum restriction, usually at the thermally controlled valve on top of the thermostat housing.
    *On 87 4V 460 F250 truck it is a simple blue plastic orifice inline with the vacuum line.
    25 VRV: Vacuum Regulator Valve
    26 VRDV: Vacuum Retard Delay Valve, as these can be used on more than just the distributor.
    27 TVS: Thermal Vacuum Switch, and is different to a Dashpot. On Fords these are usualy located in the air cleaner.
    28 TVV: Thermal Vent Valve. On fords they are mostly controlled by ambient air temps. Simular to a TVS. Located between the carb and the charcoal cannister.
    29 PVS: Ported Vacuum Switch: Very simular to TVVs except on Fords they are used in the cooling system and are controlled by water temps.
    30 PURGE CV: Vapor Canister Purge Valve
    31 EVAP CANISTER ASY
    32 Ford refers to theirs as an Idle Speed Control (ISC) solenoid
    33 Idle Boost Solenoid (Orange Knob on 81, 82, 83 A/C Equiped 3.3's) or Throttle Kicker Control
    34 Carburettor throttle Solenoid Positioner (Anti Dieseling Valve/Idle Stop Solenoid)
    35 Spark Port
    36 EGR Actuator
    37 EGR Port
    38 CAT is catalytic converter;
    39 ENG is engine;
    40 ACT - not sure, but on EFIs it means Air Charge Temperature sensor
    41 Inlet Air Temperature Control
    42 Green DVCV 2 port PVS vaccum switches
    43 Blue TCVV 3 port vaccum switches
    44 Dual Diaphram Distibutor
    45 Black SDV Cold Start Spark Delay valve
    46 Black SDV EGR Vaccuum delay valve
    47 Deceleration Valve (PVS Cold Start lockout Dampened, Non Dashpot)
    48 Non dampened or 2 port PVS (dampened) control EGR
    49 Attitude and Position Fuel Trap
    50 PVS Vacuum with Sintered Line Filters
    51 Close Limit primary or Main Jets,
    52 Lead plug sealed idle screws
    53 Carburettor throttle Solenoid Positioner
    54 Evaporative Emmission Control System
    55 Anti Backfire Valve
    56 EGR Valve Actuator
    57 Vacuum Regulator/Solenoid
    58 Solenoid Valve
    59 Venturi Vacuum Amplifier
    60 Load Control Valve
    61 EGR B/P Transducer
    62 Signal Conditioner
    63 Ported Pressure Switch
    64 Vent Valve Vacuum
    65 Vacuum Controlled Switch
    66 Vacuum Controlled Switch (Cold Temp)
    67 Vacuum Controlled Switch (Decel Idle)
    68 Vacuum Delay Valve
    69 Vacuum Vent Valve
    70 Delay Valve Two Way
    71 Ignition Timing Vacuum Switch
    72 Ignition Pressure Switch
    73 TK (Throttle Kicker)
    74 Mushroom caps for charcoal fuel vapor canister vents.

  3. #3

    Default

    Though the ding-dongs put on a vacuum advance that adds far too much vacuum advance (adjusting it for least advance, and modifying it for less, ~10-degrees, is even better...), you can connect to manifold vacuum to get it reconnected.
    Mike
    1986 Mustang convertible ---> BUILD THREAD
    Past Fox-chassis "four eyes":
    1983 Mercury Cougar LS
    1986 Ford Thunderbird ELAN
    1980 Capri RS Turbo

    Work in progress website ---> http://carb-rebuilds-plus.boards.net/

  4. #4
    FEP Super Member xctasy's Avatar
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    82's had it as well; the Vacuum Vent Valve is the amber colored ding-a-ling

    Quote Originally Posted by Dean_T View Post
    .......


    86's like Walking Talls and Uncle Terry's 85's didn't have it...they had another awkward ding-a-ling.




    Only thing similar I found was the ages old 77-80 3,3 and 5.0 Motorcraft DY-208 Distributor Check Valve Vacuum and Vent Control Valve



    http://webcache.googleusercontent.co...ient=firefox-b

  5. #5
    FEP Super Member xctasy's Avatar
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    I'd say that is paydirt for you. RED 78' has helped you in advance.

    Checking Jim K's list,


    Depending on its use, the same ## 208 reference part could be listed as 12A 226 :-

    26 VRDV: Vacuum Retard Delay Valve, as these can be used on more than just the distributor.
    or
    69 VacVV: Vacuum Vent Valve

  6. #6

    Default

    Excellent, thanks guys! I'll play around with it a little this week if I can find the time and see where I end up. I believe my base timing is currently at 10*, whatever the book called for.

  7. #7

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