Some 2006 2.3-lier Ford Fusions and Mercury Milans built prior to Dec. 9, 2005, may produce a hesitation on throttle tip-in within the first 30 seconds after startup.
According to Ford, the condition is limited to vehicles with automatic transmissions, always occurs when the coolant temperature is between 50 degrees and 100 degrees, and is the result of software issues in the PCM. Reprogramming the module with updated calibration files is the only surefire fix.
Check with a dealer for the application specifics.
"Factory Fixes" is written by Jim DePalma, a 30-year veteran of the auto repair business who has served stints as a service manager, parts manager and ASE-certified technician. His column provides vehicle manufacturers' authentic factory technical service bulletins (TSBs) that have been condensed for easier reading. Mr. DePalma advises that techs always check with a dealer or repair information system for the latest revisions before starting to work on a vehicle. He can be reached via e-mail at [email protected].