Chrysler reports that some 2004-06 Pacifica models may be difficult to start or may not start at all when the outside temperature is below freezing.
According to the car maker, the problem affects 2004 3.5-liter vehicles built after July 12, 2003, all 2005 vehicles with both 3.5-liter and 3.8-liter engines and 2006 3.5-liter vehicles built before Feb. 28, 2006.
A defective idle air control (IAC) motor is the likely culprit.
Installing a new-design IAC motor and reprogramming the PCM with updated software should eliminate the starting troubles.
For the IAC motor, order part No. 04861325AD for 2004 3.5-liter and 2005 3.8-liter engines; or part No. 04861625AB for 2005-06 3.5-liter engines.
"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].