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How do you replace the resistor on the blower motor of a 2002 Pontiac grand am. The fan works are on higher speeds only Does not work on low speeds?
Wiki User
∙ 16y ago
On many units the resistor is located in the heating system plenum. Look under the dash on the passenger side. If you see a fixture with a plug on it with 2 or 4 screws holding it into the plenum remove the fixture and inspect. If it has 2 or 3 heavy , bare wire coils between the terminals that's the resistor assembly. On some vehicles the blower motor has a couple of different windings that are switched in and out to change fan speeds. On still other units the motor has an electronic module that controls the speed located in the dash panel. I'd bet on a '02 Pontiac that it uses a resistor in the plenum.
Wiki User
∙ 16y ago
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What does the blower resistor do in a 2006 Chevy Express?
The blower resistor controls the speeds of the blower motor Hi-resistance lower motor speed Lo-resistance higher motor speed
What is a resistor block for on a Dodge Caravan?
The resistor block or blower motor resistor is used to control the speed of the blower motor. That is how you get the lower speeds on your air conditioning or heater. The higher the resistance the lower the speed of the motor.
Why would blower squeal when turned to a higher speed 1998 Pontiac grand prix?
Blower shaft bushing worn.
What do you do when the heater fan does not work?
1st check fuse , then or resistor and then blower motor itself resistor is usually under hood right by blower motor or on the ducking it self google images resistor for your kind of car so you know what your looking for power should be going into it when your heater is on and coming out the other side the higher the setting the more power coming out the other side going to blower motor
Why does resistor burn up?
cause its bad,replace with higher wattage rating.too much current !!
How do you change blower resistor for a 2004 Dodge Intrepid and where is located?
BLOWER MOTOR RESISTOR BLOCK DESCRIPTION Vehicles with manual air conditioning (non-ATC) systems will have a blower motor resistor block. The resistor block is mounted to the lower right side of the HVAC housing in the passenger compartment, where it can be accessed for service. The blower motor resistor has multiple resistor wires, each of which will change the resistance in the blower motor ground path to change the blower motor speed. The blower motor switch directs the ground path through the correct resistor wire to obtain the selected blower motor speed. The blower motor resistor cannot be repaired and, if faulty or damaged, it must be replaced. OPERATION With the blower motor switch in the lowest speed position the ground path for the motor is applied through all of the resistor wires. Each higher speed selected with the blower motor switch applies the blower motor ground path through fewer of the resistor wires, increasing the blower motor speed. When the blower motor switch is in the highest speed position, the blower motor resistor is bypassed and the blower motor receives a direct path to ground. DIAGNOSIS AND TESTING - BLOWER MOTOR RESISTOR BLOCK For circuit descriptions and diagrams, (Refer to Appropriate Wiring Information). WARNING: ON VEHICLES EQUIPPED WITH AIRBAGS, DISABLE THE AIRBAG SYSTEM BEFORE ATTEMPTING ANY STEERING WHEEL, STEERING COLUMN, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE. DISCONNECT AND ISOLATE THE BATTERY NEGATIVE (GROUND) CABLE, THEN WAIT TWO MINUTES FOR THE AIRBAG SYSTEM CAPACITOR TO DISCHARGE BEFORE PERFORMING FURTHER DIAGNOSIS OR SERVICE. THIS IS THE ONLY SURE WAY TO DISABLE THE AIRBAG SYSTEM. FAILURE TO TAKE THE PROPER PRECAUTIONS COULD RESULT IN AN ACCIDENTAL AIRBAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY. (1) Disconnect and isolate the battery negative cable. (2) Unplug the wire harness connector from the blower motor resistor. (3) Check for continuity between each of the blower motor switch input terminals of the resistor and the resistor output terminal. In each case there should be continuity. If OK, repair the wire harness circuits between the blower motor switch and the blower motor resistor or blower motor as required. If not OK, replace the faulty blower motor resistor. REMOVAL WARNING: ON VEHICLES EQUIPPED WITH AIRBAGS, WARNING: ON VEHICLES EQUIPPED WITH AIRBAGS, DISABLE THE AIRBAG SYSTEM BEFORE ATTEMPTING ANY STEERING WHEEL, STEERING COLUMN, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE. DISCONNECT AND ISOLATE THE BATTERY NEGATIVE (GROUND) CABLE, THEN WAIT TWO MINUTES FOR THE AIRBAG SYSTEM CAPACITOR TO DISCHARGE BEFORE PERFORMING FURTHER DIAGNOSIS OR SERVICE. THIS IS THE ONLY SURE WAY TO DISABLE THE AIRBAG SYSTEM. FAILURE TO TAKE THE PROPER PRECAUTIONS COULD RESULT IN AN ACCIDENTAL AIRBAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY. (1) Open hood and disconnect the negative battery cable remote terminal from the remote battery post (Refer to 8 - ELECTRICAL/BATTERY SYSTEM/CABLES - REMOVAL). (2) Remove lower right underpanel silencer/duct. (3) Disconnect wiring connector to the blower motor resistor. (4) Remove the blower motor resistor retaining screws. (5) Remove the blower motor resistor from the HVAC housing. INSTALLATION (1) Install the blower motor resistor in the HVAC housing. (2) Install the two screws that secure the blower motor resistor to the HVAC housing and tighten to 2.2 N·m (20 in. lbs.). (3) Plug in the harness connector to the blower motor resistor. (4) Install the lower right underpanel silencer/duct. (5) Connect the negative battery cable remote terminal to the remote battery post(Refer to 8 - ELECTRICAL/BATTERY SYSTEM/CABLES - INSTALLATION).
Where is the Heater fan resistor and the blower fan located on a 1997 Chevy Suburban?
They are behind the glove box. You have to take your glove box out, and be careful not to break it. It is easy to break the tabs off of it. There should be a little wire or connector, holding your glove box in. If you find that, and get that off, it will be easy to take your glove box out. Behind the glove box is your blower motor, and then up higher, near a box looking thing, is where your resistor is, with a group of wires going to it. I hope that helps a little, we just had to replace ours.
How do you replace the resistor on the blower motor of a 2002 Buick Century The fan works are on higher speeds only Does not work on low speeds?
Buick Century Blower Motor ResistorThe blower motor resistor is located on the back of the blower motor housing under the dash on the passenger side. It can be difficult to get at, but it is doable. Be ready with the ibuprofen the next day for your sore back. Remove the cover panel from beneath the dash on the passenger side.Unplug the power 'ribbon' wires leading to the resitor.Unplug the wires that lead from the resitor to the blower motor housing. There are usually two, one black and one purple that share the same plug.Remove the short hose that leads from the blower motor housing to the ventilation system ducts.Remove the blower motor by removing the three hex screws that hold it in place.Remove the resistor by removing the three hex screws that hold it in place. The resistor is right against the firewall so two of the screws are very difficult to reach. A slender flexible socket extension will make the job easier.Attach the new resistor in place using the same hex screws. Only 1 or 2 of the original three are needed (the part is very light) if you do not feel like fighting with the ones next to the firewall.Reatach the blower motor and reconnect the hose.Plug the power cable wires back into the resitor and the wire from the resistor back into the blower motor.Instead of hex screws mine were held in with 7/32 bolts. It was difficult, but easier than I had anticipated. I replaced two of the three bolts holding the resistor. The blower motor came with instructions saying that the plugs may have to be cut off of the resistor and the blower motor, then spliced together... I had to do this on mine.I got everything back together and now the fan works on four of the five levels. It does not work on high.I found on another site that said "high" uses a different circuit, with a separate fuse. I found the fuse panel on the passenger side of the dash when the door is open. The cover for the panel has all of the fuses mapped out, so it was easy to spot the 25 amp "Blower High Speed" fuse. I was very impressed to find the panel contained a fuse puller and replacement fuses. Mine was blown, I replaced it, and all is good with the world.The information I received here was extremely helpful. Thank you.
2 resistors unequal value are in parallel. Would the power dissipated by the resistor with larger ohmic value be greater than the power dissipated by the resistor of lesser value?
No, because the power dissipated in a resistor is proportional to the square of the current through the resistor but only directly proportional to the resistance of the resistor (I^2 * R) and the current through the lower value resistor will be higher than the current through the higher value resistor, the lower value resistor will usually dissipate more power.
When you turn the heater or air conditioner on the higher you turn it up the more is has a rattling sound Do you need to replace something?
i think you have something stuck in the blower motor. these are normally fairly easy to get out but i dont know what kind of vehicle you have. just pull out the blower motor and get the leaves out.
What would cause your 2003 grand prix GT fan to blow only on higher settings 3 4 or 5 not 1 or 2?
Resistor type circuit board. You have to take out the glove box and pull out the blower motor. its connected to that. cost about 80.00.
What is the functions of resistor scale?
OBVIOUSLY a 1 ohms resistor will show as zero for all the higher scale except for the low range
