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 MANUALSCHEVROLET1982CITATION L4-151 2.5LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTIGNITION SYSTEMTHERMAL VACUUM VALVETESTING AND INSPECTIONDISTRIBUTOR THERMAL CONTROL VALVE
1982 Chevrolet Citation L4-151 2.5L
Distributor Thermal Control Valve
1982 Chevrolet Citation L4-151 2.5LSECTION Distributor Thermal Control Valve
Distributor Thermal Control Valve:
COLD--Engine Coolant Temperature Below 61° F
Vacuum should pass through the valve.
WARM--Engine Coolant Temperature Above 76° F
Passage of vacuum should be completely restricted.
NOTE: Refer to the number stamped on the base of the switch or valve for calibrated switching or activation temperatures.
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.