Submitted By: BlackBII
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Vacuum Diagram Definitions |
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| Abbreviation | Description |
| A/CL | Located in the air cleaner |
| A/CL DV | Air Cleaner Diverter Valve |
| A/CL BI MET | Air Cleaner Bi-Metallic Valve |
| A/CL CWM | Air Cleaner Cold Weather Modulator |
| ACT | Air Charge Temperature Sensor, prior to 1992 |
| ACTS | Air Cleaner Temperature Sensor |
| ACV | Air Control Valve |
| AIR | Thermactor, short for Thermal Reactor. CA vehicles are installed with it as standard. Air Injection Reaction is what it stands for. |
| AIR BPV | AIR Bypass (AIRB) Valve; also called the TAB (Thermactor Air Bypass) Valve |
| BV | Bowl Vent (on top of the float tanks) |
| CARB | Carburetor |
| CBD | Closed Bowl Distributor |
| CPRV | Canister Purge Valve |
| DIST | Distributor |
| DPFE | Differential Pressure Feedback |
| DV-TW | Two Way Delay Valve |
| EFCA | Electronic Fuel Control Assembly/ (Fuel Pressure Regulator (FPR) |
| EGR | Exhaust Gas Recirculation |
| EGRC/EGRV | EGR Vent/EGR Control |
| EXH HCV | Exhaust Heat Control Valve |
| EVP | EGR Valve Position |
| EGR | Valve Position |
| EVR | EGR Vacuum Regulator; also called EGR Vacuum Solenoid |
| FLTR | Filter |
| FPR | Fuel Pressure Regulator (check vacuum line) |
| HEAT VLV INT | Heat Vacuum Control Valve Intake, (next to carb) |
| HICV | Hot Idle Control Valve |
| IAT | Intake Air Temperature Sensor (Air Charge Temperature (ACT), prior to 1992 |
| IVV | Thermactor Idle Vacuum Valve |
| LCV | EGR Load Control |
| MAN VAC | Manifold vacuum-Vacuum source; usually ref. to as Vacuum Tree atop intake manifold |
| MAP | Manifold Absolute Pressure |
| PCV | Positive Crankcase Ventilation |
| PURGE | Vapor Canister Purge Valve |
| PV | Ported Vacuum |
| PVS | Ported Vacuum Switch (PVS) Valve |
| S | Spark port |
| SA-FV | Separator Assembly Fuel/Vacuum |
| SOLV | Thermactor Solenoid Valve |
| SV CBV | Carborator Fuel Bowl Solenoid Vent Valve |
| TCAC | Thermostatically Controlled Air Cleaner |
| TCP | Temperature Compensated Accelerator Pump |
| TK | Throttle Kicker |
| TVS | Throttle Valve Solenoid (aka Solepot, Dashpot) OR Temperature Vacuum Switch |
| TVV | Thermal Vacuum Valve OR Thermostatic Vacuum Valve (aka Ported Vacuum Switches; Thermal Vacuum Valve) |
| VAC | Vacuum |
| VCKV | Vacuum Check Valve |
| VCV | Vacuum Control Valve |
| VDV | Vacuum Delay Valve |
| V CK V or VCV | Vacuum Check Valve |
| VOTM | Vacuum Operated Throttle Modulator |
| VRDV | Distributor Vacuum Delay Valve (VDV, VRDV, DV-TW) |
| VRDV | Vacuum Delay Valve (VDV, VRDV, DV-TW) |
| VRESER | Vacuum Reservoir (coffee can style in earlier years; replaced by plastic style) |
| VRESV REST | on earlier years such as SEABRONC’s 83 is a Vacuum Restictor/delay valve, it delays vacuum for a certain amount of time |
| VRV | Vacuum Regulator Valve |
| WOT | Wide Open Throttle Valve |