Jim Grant's Tech Tips
Voyager, Heater Problem
Q: I have a '94 Plymouth Voyager
with a "weird" heater problem. When the vehicle is running but
sitting still; the blower unit only puts out cool or cold air. Once the
vehicle starts moving forward: do I get some heat. Even at that point;
the blower output seems to be diminished; and the temperature doesn't
get very hot. Any ideas?..
the coolant at the correct level? Is the radiator cap in good condition?
Is the thermostat working correctly? Always start with the basics when
dealing with a no heat condition in a vehicle. Low coolant level, a bad
radiator cap, or faulty thermostat are common causes of poor heat conditions
in virtually any vehicle.