Only 2 out of 5 speeds work on my heater/ ac control knob
Just 4 and 5 work they are slowly going out. 1,2,and 3 do not. I was told it was the blower resistor. Where is it located and what is involved in changing it. Maybe it is not not blower resistor. Its cold here, and I dont want to loose it alltogether......
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Re: only 2 out of 5 speeds work on my heater/ ac control...
It is the blower motor resistor.
It is located in the passanger foot area. It will take about 30 minutes to replace. I dont remember what it looks like but all you need to do is remove the plastic panel under the dash and it will be their attached to the blower motor. Get the new part and use that as a guide.
Sorry I cant be more helpful it has been about 6 or 7 months since I did one last.
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You can have your mechanic friend test the motor under the hood where the wires plug into the blower. It sounds like the motor has went bad in my opinion, but it could be the plug is loose. I will be hoping its just loose for your sake and good luck!
WELL YOU HAVE TO USE A VOLT METER CONNECT ONE VOLT METER WIRES TO GOOD GROUND AND THE OTHER VOLT METER WIRES GOES TO EACH SWITCH SPEED.IF VOLT METER GET VOLTAGE A 1 OR 2 CONTROL SPEED RESISTOR BAD.IF RESISTOR BAD YOU WILL GET 1 OR 2 BLOWER MOTOR SPEEDS.IF BLOWER MOTOR WORKING.CHECK THE AC AND HEATER CONTROL SWITCH FUSE OR CHECK BLOWER MOTOR FUSE AND RELAY.IF ALL GOOD SO FAR CONTROL SWITCH ITSELF COULD BE FAULTY.
the heat or cold adjustment control in my 2002 grand caravan will only work on maximum adjustment, if you try to reduce the speed of the blower by turning the control knob 1 knot, 2, 3 and 4 down it won't work it only work at the last position which is the 5th or last turn of the control knob. please let me know what could be the problem. thanks.
Most of the time this is a bad "blower motor resistor". It is easy to replace. You will find your behind the glove box in the ac/heater (evaporator) housing. Below is a pic of the resistor as it is seen from behind the glove box. 1. resistor assembly. 2. harness 3. fasteners (2). 4. lower edge of glove box. (open).
Sounds like the fan control knob has shorted out. You can check the fan "blower" relay and fuse in the engine compartment but you need to make sure the control knob is good or you will keep blowing fuses and relays. If your blower fuse and relay are good, then just have the control knob checked and replaced if needed.
chk. to see if you got a heater resister, it should be somewhere in the visinty of the blower motor 2 screws hold it in the heater box and it will have 4 or 5 wires in a plug going to it. samething happend with my truck and thats what it was. i also found out sometimes that plug with the wires to the resister burn, if thats the case you will have to chg. that too.