1997 Dodge GrandCaravan 3.3L v6 (auto) We weren't getting any air out of the heaters. Had the blower motor replaced, now we get air, however the air is not as hot as it should be on high. The fan speeds don't increase once you set it past halfway, instead it just gets really loud with a buzzing and a rattling. Fuses are good. Rear fans worked before we had the front blower motor replaced, now the rear blower doesn't work. they recommended I check the thermostat, I was thinking maybe the blower motor resistor. Do you have any insight or suggestions.

The diagram is for v6. The top wire at blower motor is voltage, the bottom wire is ground. Use a test light and check both voltage and ground. Key on--hvac on. If you have good voltage and ground with no blower action, suspect the blower motor. The blower motor is usually under the passenger side dash.

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Best Regards,

Master Tech Lee

HEATER BOX SHIELD
Image
Heater Box Heat Shield
Remove or Disconnect
1. Fasteners that retain heat shield to heater box assembly.
Image [ Heater Box Heat Shield
Install or Connect
1.Fasteners that retain heat shield to heater box assembly.
Tighten
-Bolts Screws to 2.2 N.m (25 lb in).
HEATER ASSEMBLY
Image ' Heater Hoses
Image ' A/C Evaporator Tube Assembly
Image ' Evaporator Core
Image ' Evaporator Core Assembly
Image ' Heater Assembly
Remove or Disconnect
1.Engine coolant. Refer to Draining and Filling Cooling System in Engine Cooling.
2.Heater hoses. Refer to Heater Hoses.
3.Instrument panel. Refer to Instrument Panel Replacement in Interior Trim.
4.Air inlet assembly. Refer to Air Inlet Assembly Replacement.
5.Vacuum lines.
Important
-Clearly label vacuum line connections.
6.Heater assembly studs inside engine bay.
7.Blower motor resistor. Refer to Blower Motor Resistor.
8.Stud inside heater core housing.
-Stud is revealed by removing the blower motor resistor.
9.Rear case screws.
10.Heater assembly.
11.Seals.
Imagt
Imagt
Imagt
Imagt
Imagt
Heater Hoses
A/C Evaporator Tube Assembly
Evaporator Core
Evaporator Core Assembly
Heater Assembly
Install or Connect
1.Seals.
2.Heater assembly.
3.Rear case screws.
4.Stud inside heater core housing.
Tighten
-Stud to 1.9 N.m (17 lb in).
5.Blower motor resistor. Refer to Blower Motor Resistor.
6.Heater assembly studs inside engine bay.
Tighten
-Studs to 1.9 N.m (17 lb in).
7.Vacuum lines.
8.Air inlet assembly. Refer to Air Inlet Assembly Replacement.
9.Instrument panel. Refer to Instrument Panel Replacement in Interior Trim.
10.Heater hoses. Refer to Heater Hoses.
11.Engine coolant. Refer to Draining and Filling Cooling System in Engine Cooling.
-Check the system for leaks.


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http://ricksfreeautorepairadvice.com/replace-blower-motor-caravan-voyager-town-and-country/ Replace Blower Motor Caravan Voyager Town and Country Ricks Free Auto...

The Breeze is the same car as the Dodge Stratus, so if you click here you will find instructions on how to replace the blower in the Stratus.

Roger it sounds like the blower motor is not comming on. There is a resistor network located in the engine compartment on the passenger side mounted to the firewall, that controlls the blower motor. The connections may have corroted or the unit itself is bad. That was the first thing I had to relpace when I got my used 92 Dakota. There is also a 30 amp fuse in the fuse box under the dash board . If that is blown I would suspect the blower motor is seized up or just pulling too much power.

Click HERE for instructions with detailed photos on replacing the blower motor resistor in 1996-2001 Dodge and Chrysler mini vans.

Remove the cover plate on the passenger side of the heater box, 3-4 screws.
Unplug the motor assembly, remove 3-4 more screws that hold the motor in place and pull it down from its position. Get an aftermarket motor and installed it in the original housing with the original squirrel cage.
Installation is the reverse of removal.

if the fuse is ok your next step is to see if you have power at the heater fan switch,if you do then the next thing is the heater blower motor resister it is under the heater assembly,that is what gives you different speeds,
the last is test for power at blower motor to see if it is faulty

the heater blower motor is located undr the glovebox there are 3 small bolts holding it in place, 7/32 socket i believe after loosening these you will most likely have to move the wirring harness that goes through the floor to get the motor to drop down. after the you get the motor to drop down there is a large vaccum line that goes into the side of the motor gently pull this out be careful not to pull the other end of the vaccum line loose from inside the car. the is a power plug in the side of the motor that u will need to unplug to free up the blower. because it is hard to see the power plug needs to be pressed down on the top and pulled simaltaniously.

the problem could be in the blower wheel or motor, is there a vibration with the blower on and grinding. i rec removing blower motor and inspecting that further. debris could be cought inside it or blower may need replacing. it may not be that bad of a repair $$.