Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Emission Control Abbreviations: "A"
- A/C
-
Air Conditioning
- A/C-ISUS
-
A/C Idle Speed-Up Solenoid
- A/F
-
Air/Fuel
- AAI
-
Air Assist Injector
- ACL
-
Air Cleaner (Thermostatic Air Cleaner)
- ACL-BMS
-
ACL Bimetallic Sensor
- ACL-CKV
-
ACL Check Valve
- ACL-DV
-
ACL Delay Valve
- ACL-ESC
-
Electronic Spark Control
- ACL-PVS
-
ACL Ported Vacuum Switch
- ACL-RDV
-
ACL Reverse Delay Valve
- ACL-RDVS
-
ACL Reverse Delay Valve (Single)
- ACL-TCV
-
ACL Thermal Control Valve
- ACL-TS
-
ACL Temperature Sensor
- ACL-TSOV
-
ACL Temperature Sensor Override Valve
- ACL-TVS
-
ACL Thermal Vacuum Switch
- ACL-TVV
-
ACL Thermal Vacuum Valve
- ACL-VCDV
-
ACL Vacuum Control Delay Valve
- ACL-VCV
-
ACL Vacuum Control Valve
- ACL-VM
-
ACL Vacuum Motor
- ACL-WP
-
ACL Wax Pellet Type Motor
- ADS
-
Anti-Dieseling Solenoid
- AFR
-
Air/Fuel Ratio Sensor
- AFS
-
Air/Fuel Ratio Sensor
- AIH
-
Air Intake Heaters
- AIH-TS
-
AIH Temperature Sensor
- AIR
-
Air Injection System
- AIS
-
Air Injection System
- AIS-ACV
-
AIS Air Control Valve
- AIS-AF
-
Air Injection System Air Filter - AIS-AMV
-
AIS Air Management Valve
- AIS-ASV
-
AIS Air Switching Valve
- AIS-BPV
-
AIS By-Pass Valve
- AIS-CC
-
AIS Computer Controlled - AIS-CKV
-
AIS Check Valve
- AIS-CSV
-
AIS Control Solenoid Valve
- AIS-CV
-
AIS Combination Valve
- AIS-DV
-
AIS Diverter Valve
- AIS-IMCV
-
AIS Intake Manifold Change-Over Valve
- AIS-MCV
-
AIS Manifold Change-Over Valve
- AIS-OWV
-
AIS One Way Valve
- AIS-PAF
-
AIS Pulse Air Feeder
- AIS-PM
-
AIS Pump Motor
- AIS-PV
-
AIS Pneumatic Valve
- AIS-RV
-
AIS Relief Valve
- AIS-SAV
-
AIS Secondary Air Valve
- AIS-SOL
-
AIS Solenoid
- AIS-SV
-
AIS Solenoid Valve
- AIS-VCV
-
AIS Vacuum Control Valve
- AIS-VSV
-
AIS Vacuum Switching Valve
- AIS-VT
-
AIS Vacuum Tank
- AIS-VCV
-
AIS Vacuum Control Valve
- AIS-VSV
-
AIS Vacuum Switching Valve
- AIV
-
Air Injection Valve
- AIV-SOL
-
Air Injection Valve Solenoid
- ALVW
-
Adjusted Loaded Vehicle Weight
- AMV
-
Air Management Valve
- AP
-
Air Pump Injection System
- AP-ABV
-
Air Pump Air Bypass Valve
- AP-ACV
-
AP Air Control Valve
- AP-AMV
-
AP Air Management Valve
- AP-ASRV
-
AP Air Switching Relief Valve
- AP-ASS
-
AP Air Switching Solenoid
- AP-ASV
-
AP Air Switching Valve
- AP-BP
-
AP By-Pass Valve
- AP-BPV
-
AP By-Pass Valve
- AP-CKV
-
AP Check Valve
- AP-CS
-
AP Control Solenoid
- AP-CV
-
AIR Cut-Off Valve
- AP-DCTO
-
AP Dual Coolant Temperature Override
- AP-DLY
-
AP Delay Valve
- AP-DV
-
AP Diverter Valve
- AP-EADV
-
AP Electric Air Control Diverter Valve
- AP-EAMR
-
AP Electric Air Management Relay
- AP-EAMS
-
AP Electric Air Management Solenoid
- AP-EAP
-
AP Electric Air Pump
- AP-EC
-
AP Electromagnetic Clutch
- AP-ERLY
-
AP Electric Air Pump Relay
- AP/PAIR
-
Pulsed Secondary Air Injection
- AP-RDV
-
AP Reed Valve
- AP-RV
-
AP Relief Valve
- AP-SOL
-
AP Solenoid
- AP-SOV
-
AP Shut-Off Valve
- AP-SV
-
AP Solenoid Valve
- AP-SWV
-
AP Switchover Valve
- AP-TV
-
AP Transmitting Valve
- AP-VCS
-
AP Vacuum Control Solenoid
- AP-VCSV
-
AP Vacuum Controlled Air Shut-Off Valve
- AP-VCV
-
AP Vacuum Control Valve
- AP-VSV
-
AP Vacuum Switching Valve
- A/T
-
Automatic Transmission
- ATCV
-
Air Temperature Control Valve
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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