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P0639 Diagnostic Trouble Code Discussion for March 2005

No Turbine shaft speed output

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Trouble Ticket Help Requests for DTC P0639
Help Request Posted
1994 Ford Taurus GL 3.0L Poor Idle Quality, Stall, Rolling Idle VIN: 1FALP57U8R
P0639: No Turbine shaft speed output. Hi all, engine idle varies between 400 & 900, with occasional stall...in Park or Neutral, when put in gear engine will either stall (not often) or more often than not idle smoothly and stable. KOEO continous code is 639 for the tss (vss works fine), scan d...
March 02, 2005