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Mustang TAB & TAD Vacuum Control Valves

The Throttle Air Bypass Valve (TAB) & Throttle Air Diverter Valve (TAD) are part of the SMOG or Emissions system.

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They are controlled by the PCM via the TAB & TAD Vacuum Control Valves. The Mustang TAB & TAD Vacuum Control Valves are located on the rear of the passenger side (RH) Strut Tower.
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