Your TPS or Throttle Position Sensor is responsible for a smooth idle. If your car is having problems starting or idling, it could be as easy as replacing your Mustangs throttle position sensor we offer Mustang throttle position sensor's for all year Mustangs from 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004.
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