The stage 1 relay has blown! it is located behind the glovebox door above the heater blower. # find it # pull it out # replace it job done:-)
heater fan only works after about 15 minutes on my 89 plate range rover
Probably the blower motor speed resistor is partially burned out.
Without knowing the symptoms, I can't pinpoint an answer. However, the most common problem with heater blowers are the resister stacks. When they fail, the fan only works on high speed and does not work on the lower speeds. It is strictly a dealer part around $30. Easy to replace.
Resistor on the heater blower motor has failed
install 350 heads with bigger valves works well for more torque at lower speeds
Defective heater blower motor resistor pack.
1) Check the blower motor, make sure it is not making any weird noises.2) Check the blower motor resistor, its located next to the motor. It is what controls the lower speeds of the motor. You can try to find one at the junkyard.
You most likely have a problem with your blower RESISTOR PACK or rheostat. This is what controls the high, med and low speeds on your heater. Where it is and how to change it depends on your vehicle.
The blower motor resistor is bad.
The resistor pack has burnt outremove the glove box cover and you will see a wiring conector going into a black plate with 2 Phillips screws.remove wiring and screws and remove resistor pack and replacedealer price around �3030 mins to changeVERY VERY COMMON PROBLEMwww.freewebs.com/hometekANSWER 2Visit www.rezpax.com for the answer to all questions relating the subject of missing fan speeds.Purchase replacement ceramic resistorsDownload the Removal & Repair GuideSend them your faulty Heater Resistor Pack for repairAll saving you many many £££'swww.rezpax.com
in my opinion yes, i got my 75 rover a while back and it still works perfectly
If all speeds do not work, suspect the fuse, the switch, the switch connector or the blower motor. If only high speed works, suspect the blower motor speed resistor. If low speeds work and not high, suspect the blower motor relay.