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Where is the low idle screw on a 2002 Ford Taurus?

The 2002 Ford Taurus doesn't have a low idle screw in the traditional sense like older carbureted engines. Its idle speed is controlled electronically by the Powertrain Control Module (PCM). There's no manually adjustable screw to alter the idle speed.

If you're experiencing idle problems, it's not a matter of adjusting a screw. The issue is likely related to a sensor, the PCM itself, or a vacuum leak. You'll need to use a diagnostic tool (OBD-II scanner) to check for trouble codes and identify the problem. A mechanic would be best equipped to diagnose and repair this.