Engine Controls - RPM Fluctuation On Coast-Down

TSB 08-20-10

10/13/08

4.0L MANUAL TRANSMISSION - RPM FLUCTUATION
DURING NEUTRAL COAST DOWN

FORD:
2005-2006 Mustang

ISSUE
Some 2005-2006 Mustangs vehicles equipped with a 4.0L engine and manual transmission, may exhibit the RPM fluctuating up and down while coasting in Neutral with clutch pedal released. No diagnostic trouble codes will be present. The RPM will drop back to idle with clutch pedal depressed.

ACTION
Reprogram the powertrain control module (PCM) to the latest calibration using IDS release 56.12 and higher or 57.4 and higher. This new calibration is not included in the VCM 2008.9 DVD. Calibration files may also be obtained at the website.

WARRANTY STATUS: Eligible Under Provisions Of New Vehicle Limited Warranty Coverage
IMPORTANT: Warranty coverage limits/policies are not altered by a TSB. Warranty coverage limits are determined by the identified causal part.

OPERATION DESCRIPTION TIME

082010A 2005-2006 Mustang 4.0L 0.3 Hr.
Manual Transmission:
Check DTCs And
Reprogram The PCM
Authorization Decal Not
Required (Do Not Use
With 12650D)

DEALER CODING
CONDITION
BASIC PART NO. CODE
RECAL 04





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