1999 Plymouth Voyager Heater Repair

Hi there,

Check that the hoses going to the heater core are both hot with the engine at temp and heater on hot. If one hose is cooler that the other, check that the heather tap is fully open, also have the core back flushed as well. If the vent controllers are directing air as they should (with little or no leaking at other vents and the air (fan) speed feels accurate for each setting, the vents should be ok. Check if the recirculation flap is working and not stuck on outside are all the time. I hope that this helps.

Mark (mhpautos)