Engine, A/T Controls - Highway Speed Engine Fluctuation
TSB 05-17-509/05/05
ENGINE RPM FLUCTUATION AT HIGHWAY CRUISING
SPEEDS - VEHICLES BUILT PRIOR TO 8/2/2005
FORD:
2005-2006 Five Hundred, Freestyle
MERCURY:
2005-2006 Montego
ISSUE
Some 2005-2006 Freestyle, Five Hundred and Montego vehicles built prior to 8/2/2005 and equipped with the continuous variable transaxle (CVI), may exhibit a 50-100 RPM fluctuation. There will be no diagnostic trouble codes (DTCs). The condition will occur at highway speeds, during a steady state cruise or slight tip-in, with transmission fluid temperature below 185° F (85° C).
ACTION
Reprogram the powertrain control module (PCM) and the transmission control module (TCM) to the latest calibration using WDS release B38.10 and higher or B39.1 and higher. This new calibration is not included in the B39 CD. Calibration files may also be obtained at the website.
WARRANTY STATUS: Eligible Under Provisions Of New Vehicle Limited Warranty Coverage
OPERATION DESCRIPTION TIME
051705A 2005-2006 Freestyle/Five 0.6 Hr.
Hundred/Montego:
Reprogram Powertrain
Control Module (PCM) And
Transmission Control
Module (TCM) (Do Not
Use With 12650D,
12650D84)
DEALER CODING
CONDITION
BASIC PART NO. CODE
RECAL 04
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