The PCV (Positive Crankcase Ventilation) valve on a 1988 Ford Thunderbird is typically located on the valve cover. It's often found on the driver's side, attached to a grommet on the cover. The valve is connected to a hose that leads to the intake manifold, allowing crankcase gases to be recirculated into the engine. To access it, you may need to remove any obstructions, such as air intake components.
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