Some owners of 2006-07 Chrysler Town & Country, Caravan or Voyager minivans with rear air-conditioning systems may complain that their a/c system doesn't get cool enough or blows warm air.
One likely cause, FCA USA L.L.C. reported, is a low refrigerant charge.
A leak in the rear evaporator core is what causes the refrigerant loss. Installing an improved evaporator from a special kit, part No. CNTKX210AA, should eliminate the cooling issue. The kit includes the upgraded evaporator, a rear thermostatic expansion valve (TXV), two O-rings, a nut and three seals.
Before ordering the new kit, however, raise the minivan on a lift. Using the illustration as reference, get underneath the vehicle and carefully inspect the rear extension tubes.
Chrysler reports they're prone to corrosion or pinhole leaks. If the tubes are damaged, you'll have to replace them, part No. 5183256AA, along with the parts in the kit to get the desired result.
"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 email at [email protected].