NHTSA Complaint #10479844 — 2008 DODGE GRAND CARAVAN

THERE IS A HEATER HOSE ASSEMBLY LEADING FROM THE TOP OF THE ENGINE TO THE HEATER CORES IN THE PASSENGER COMPARTMENT. A HOSE COMES OUT OF THE ENGINE AND INTO A Y-COUPLING, WHERE IT SPLITS INTO TWO HOSES. ONE HOSE LEADS INTO THE FIREWALL AND THE FRONT HEATER CORE. THE SECOND GOES UNDER THE VEHICLE TO THE BACK HEATER CORE. A COOLANT LEAK DEVELOPED IN THE Y-COUPLING, LEAKING COOLANT ONTO THE EXHAUST. AFTER LEAKING FOR SOME TIME, THE CHECK ENGINE LIGHT CAME ON TO INDICATE LOW COOLANT. THIS APPEARS TO BE A COMMON PROBLEM, AS A SIMPLE GOOGLE SEARCH TURNS UP MANY RESULTS LIKE THIS: HTTP://DODGEFORUM.COM/FORUM/DODGE-CARAVAN/275625-2008-GRAND-CARAVAN-COOLANT-LEAK-3.HTML EITHER THE Y-COUPLINGS ARE DEFECTIVE, OR ARE NOT DESIGNED TO HANDLE THE STRESS AND HEATING/COOLING CYCLES INHERENT IN CARRYING HOT COOLANT. *TR