4.0L MANUAL TRANSMISSION - RPM FLUCTUATION DURING NEUTRAL COAST DOWN
Publication Date: September 30, 2008
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.
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 www.motorcraft.com.
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.
2005-2006 Mustang 4.0L Manual Transmission: Check DTCs And Reprogram The PCM Authorization Decal Not Required (Do Not Use With 12650D)