2006-12-13 19:13:39 · 9 answers · asked by freetiibet 1 in Cars & Transportation ➔ Maintenance & Repairs
You need to get a better job. I'm not picking on you, but it's true. When you no longer have to work on your car.....you're doing OK.
2006-12-13 19:23:15 · answer #1 · answered by something'srotten 4 · 0⤊ 2⤋
I own a repair shop, and have fixed many of these. How it all works is the key to understanding what is wrong. The switch supplies the power to the relay when you put it to the on position. The selector switch supplies power to which ever direction you need the power to flow through the resistor. The resistor is mounted in the heater box, and is kept cool by the fan blowing across it, or it would burn the wires in two. The resistor is made up of wire that looks like springs. How thick this wire is, and how long this wire is, causes resistance and heats the wire. The more resistance, the less power is left to run the blower motor, thus reducing the speed of the blower motor. Example: high would be the largest and shortest wire or coil of wire. When you put the controls to the on position, power is sent to a coil in the relay that becomes magnetic, and pulls the two pieces of metal together thus making the connection. This in turn sends power back to the selector switch that selects which coil the power is sent to in the resistor, thus activating the desired speed the blower motor will turn.
Look under the hood on the passenger side of the vehicle. You will see where the heater hoses come out of the fire wall, and something that looks like a box. This houses the blower motor, heater core, and if you look you will see a little square looking thing held in place by two screws. It has about 4-5 wires attached to it. Remove the screws and pull it out of the heater box. Look to see if it has burned one or two of the coils of wire in two. If so this is the culprit, a bad resistor. If this is ok, then suspect the selector speed switch on your dash.
Glad I could Help, Good Luck!!!
2006-12-13 21:33:15 · answer #2 · answered by Anonymous · 1⤊ 0⤋
The resistor block is burned out. To get slower speeds, the current to the fan motor is routed through various resistors to reduce the amount of power to the fan. When you put the fan on high speed, a relay connects the fan directly to battery power bypassing the resistors.
2016-05-24 00:32:32 · answer #3 · answered by ? 4 · 0⤊ 0⤋
Probably a defective resistor, although the problem could also be in the switch.
2006-12-13 19:19:35 · answer #4 · answered by Anonymous · 0⤊ 1⤋
it is the relay switch.. sorry folks not the resistor.. the rlay for the fan controls the fan speed. see if u can find a repair shop that has an electrical patrs locater guide.. it is the fastest and easiest way to find your resistor. good luck
2006-12-13 20:54:40 · answer #5 · answered by spotlite 5 · 1⤊ 2⤋
In time you will need a new blower motor and resistor. If you replaced the resistor the motor would blow it.
2006-12-13 19:21:45 · answer #6 · answered by Anonymous · 0⤊ 2⤋
99% sure the resistor is bad
2006-12-13 19:24:45 · answer #7 · answered by Anonymous · 0⤊ 2⤋
listen to musiclick. he knows what he's talking about.
2006-12-13 22:02:40 · answer #8 · answered by car dude 5 · 1⤊ 0⤋
the fan might be going out, or you could have a short somewhere in your dash
2006-12-13 19:19:19 · answer #9 · answered by silentdreamin 3 · 0⤊ 3⤋