Even though this TSB is dated, it may apply to your vehicle:
Some 2011 Mustang vehicles built on or before New Vehicle Limited
8/16/2010 equipped with a 5.0L engine and either a Warranty Coverage And
manual or automatic transmission may exhibit the Emissions Warranty
malfunction indicator lamp illuminating with Coverage
diagnostic trouble code (DTC) P050E, P061C, an IMPORTANT: Warranty
intermittent hard start/long crank time up to two (2) coverage limits/policies are
seconds, or an idle speed dip, roll and variation in not altered by a TSB.
hot ambient temperatures. In addition, vehicles Warranty coverage limits
equipped with an automatic transmission may are determined by the
experience an idle speed dip, roll and variation in identified causal part.
first gear coast or during an immediate reverse .
Action
Reprogram the powertrain control module (PCM) to Any Other Labor the latest calibration using IDS release 72.01 and Operations) higher. This new calibration is not included in the VCM 2011.3 DVD.
Source: http://ww2.justanswer.com/uploads/jmcdo28/2011-09-17_192706_tsb11-03-32.pdf
