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.
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HOMESERVICE MANUALSCHEVROLET1982CAVALIER L4-112 1.8LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTIGNITION SYSTEMTHERMAL VACUUM VALVE
1982 Chevrolet Cavalier L4-112 1.8L
Thermal Vacuum Valve
1982 Chevrolet Cavalier L4-112 1.8LSECTION Thermal Vacuum Valve
Description and Operation- Distributor Spark Thermal Vacuum Switch (DS-TVS)
- Distributor Spark TVV
- Distributor Spark VRV
- Distributor Spark/Canister Purge TVS
- Distributor Thermal Control Valve (DTCV)
- Distributor Thermal Vacuum Switch (DTVS)
- Distributor Vacuum Modulator Valve (DVMV)
- Distributor Vacuum Solenoid Valve (VSV)
- Spark Advance Vacuum Modulator (SAVM)
- Trapped Vacuum Spark Advance (TVSA)
Testing and Inspection
RENDER: 1.0x
NO RELATED
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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.