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 MANUALSFORD1988MUSTANG LX, 2D HATCHBACK, 2.3 A, AUTOMATICREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMEGR SYSTEMCOMPONENT TESTINGSYSTEM COMPONENTSTEMPERATURE VACUUM SWITCH (TVS)
1988 Ford Mustang LX, 2D Hatchback, 2.3 A, Automatic
Temperature Vacuum Switch (TVS)
1988 Ford Mustang LX, 2D Hatchback, 2.3 A, AutomaticSECTION Temperature Vacuum Switch (TVS)
Using a vacuum pump, apply 16 in. Hg of vacuum to the motor side of the switch. Ensure vacuum switch meets specifications. See VACUUM SWITCH SPECIFICATIONS table.
VACUUM SWITCH SPECIFICATIONS (1)
| Color | Switch Closes @ °F (°C) | Switch Opens @ °F (°C) | ||
|---|---|---|---|---|
| White | 50 (10) | Above 76 (24.4) | ||
| Brown | 15 (-9) | Above 30 (-1) | ||
| Red | 60 (18) | Below 50 (10) | ||
| Purple | 40 (4) | Above 55 (13) | ||
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RENDER: 1.0x
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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.