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: "S"
- SAI-SV
-
Secondary Air Injection Shutoff Valve
- SAIR-CV
-
Secondary Air Injection Control Valve
- SC
-
Supercharged or Super Charger
- SC MFI
-
Supercharged Multiport Fuel Injection
- SCR
-
Selective Catalytic Reduction
- SCSV
-
Swirl Control Solenoid Valve
- SCV
-
Swirl Control Valve
- SCV-A
-
SCV Actuator
- SFI
-
Sequential Multiport Fuel Injection
- SFI-MAF
-
SFI Mass Airflow Sensor
- SFLS
-
Sub-Fuel Level Sensor
- SOHC
-
Single Overhead Cam
- SPK
-
Spark Controls
- SPK-AVM
-
SPK Advance Vacuum Modulator
- SPK-BVSV
-
SPK Bimetal Vacuum Switching Valve
- SPK-CC
-
SPK Computer Controlled
- SPK-CKV
-
SPK Check Valve
- SPK-CSSA
-
SPK Cold Start Spark Advance System
- SPK-CSSH
-
SPK Cold Start Spark Hold System
- SPK-CTO
-
SPK Coolant Temperature Override
- SPK-DAVS
-
SPK Distributor Vacuum Advance Solenoid
- SPK-DCKV
-
SPK Distributor Check Valve
- SPK-DCTO
-
SPK Dual Coolant Temperature Override
- SPK-DDD
-
SPK Dual Diaphragm Distributor
- SPK-DMV
-
SPK Distributor Modulator Valve
- SPK-DPD
-
SPK Dual Point Distributor
- SPK-DPVS
-
SPK Distributor Ported Vacuum Switch
- SPK-DRCV
-
SPK Distributor Retard Control Valve
- SPK-DRS
-
SPK Distributor Retard Solenoid
- SPK-DSVMV
-
SPK Distributor Spark Vacuum Modulator Valve
- SPK-DTVS
-
SPK Distributor Thermal Vacuum Switch
- SPK-DTVV
-
SPK Distributor Thermal Vacuum Valve
- SPK-DV
-
SPK Delay Valve
- SPK-DVA
-
SPK Distributor Vacuum Advance
- SPK-DVAS
-
SPK Distributor Vacuum Advance Solenoid
- SPK-DVCS
-
SPK Distributor Vacuum Control Solenoid
- SPK-DVCSW
-
SPK Distributor Vacuum Controlled Switch
- SPK-DVCV
-
SPK Distributor Vacuum Control Valve
- SPK-DVDV
-
SPK Distributor Vacuum Delay Valve
- SPK-DVRS
-
SPK Distributor Vacuum Retard Switch
- SPK-DVRV
-
SPK Distributor Vacuum Regulating Valve
- SPK-DVVV
-
SPK Distributor Vacuum Vent Valve
- SPK-EAVS
-
SPK Electronically Actuated Vacuum Switch
- SPK-EDM
-
SPK Electronic Distributor Modulator
- SPK-EI
-
SPK Electronic Ignition
- SPK-ESA
-
SPK Electronic Spark Advance
- SPK-ESC
-
SPK Electronic Spark Control (Retard)
- SPK-ESS
-
SPK Electronic Spark Selection
- SPK-EST
-
SPK Electronic Spark Timing
- SPK-FDV
-
SPK Forward Delay Valve
- SPK-HPCA
-
SPK Housing Pressure Cold Advance
- SPK-ITCS
-
SPK Ignition Timing Control System
- SPK-ITVS
-
SPK Ignition Timing Vacuum Switch
- SPK-NLVR
-
SPK Non-Linear Vacuum Regulator
- SPK-OSAC
-
SPK Orifice Spark Advance Control
- SPK-PVA
-
SPK Ported Vacuum Advance
- SPK-PVS
-
SPK Ported Vacuum Switch
- SPK-RDO
-
SPK Retard Delay Orifice
- SPK-RDV
-
SPK Reverse Delay Valve
- SPK-RDVD
-
SPK Reverse Delay Valve (Dual)
- SPK-RDVLV
-
SPK Retard Delay Valve
- SPK-RDVS
-
SPK Reverse Delay Valve (Single)
- SPK-RETS
-
SPK Retard Switch
- SPK-SC
-
SPK Speed Controlled
- SPK-SDV
-
SPK Spark Delay Valve
- SPK-SOL
-
SPK Solenoid
- SPK-SRRV
-
SPK Spark Relay Regulator Valve
- SPK-TAVIA
-
SPK Temperature Activated Vacuum Ignition Advance
- SPK-TCS
-
SPK Transmission Controlled Spark
- SPK-TCSYS
-
SPK Timing Control System
- SPK-TIDC
-
SPK Thermostatic Ignition Distributor Control
- SPK-TV
-
SPK Thermal Valve
- SPK-TVS
-
SPK Thermal Vacuum Switch
- SPK-VACTO
-
SPK Vacuum Advance Coolant Temperature Override
- SPK-VAS
-
SPK Vacuum Advance Solenoid
- SPK-VAV
-
SPK Vacuum Advance Valve
- SPK-VR
-
SPK Vacuum Retard
- SPK-VRSW
-
SPK Vacuum Retard Switch
- SPK-VSV
-
SPK Vacuum Switching Valve
- SPK-VTCS
-
SPK Vacuum Timing Control System
- SPL
-
Smoke Puff Limiter
- SRI
-
Service Reminder Indicator
- SSCA
-
Stepped Speed Control Actuator
- SSCS
-
Stepped Speed Control Solenoid
- STS
-
Service Throttle Soon Light
- STVS
-
Secondary Throttle Valve System
- SUB-HO2S
-
Sub-Heated Oxygen Sensor (after CAT)
- SUB-O2S
-
Sub-Oxygen Sensor
- SUB-TWC
-
Sub Three-Way Catalytic Converter
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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