Question about 1992 Buick LeSabre

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1992 buick le sabre blower motor resistor location

Blower switch drops from hi speed to next lowest plus the other speeds will work but sometimes will come back on then off.I have not found a short

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If your Buick has "automatic HVAC" (you set a temp and it stays there) you do not have a resistor but a electronic controller. The common failure on these is the blower stays on when the key is turned off. In either case, the part is usually located on the engine side of the duct work. it will have wires/connectors and be in the airflow of the blower.

Posted on May 12, 2014

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Posted on Jan 02, 2017

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emissionwiz
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SOURCE: Low speeds on Blower Motor do not work.

this is caused by a burnt out blower motor speed control resistor module.

Posted on Mar 10, 2009

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SOURCE: Blower motor resistor

I believe it's behind the glove box. Once you remove the glove box it's easy to get to. Hope this helps.

Posted on May 15, 2009

  • 37 Answers

SOURCE: Blower motor vent selection switch not working

the hvac selector switch in the dash may be the problem.You need to remove the switch and look at the connector on the back of switch,see if there are any burnt wires at the connector or switch.It's all electronic and the switches have been known to burn out on this and other model.

Posted on May 26, 2009

  • 205 Answers

SOURCE: blower motor fan works on high setting only

The resistors are located in the firewall just above the blower motor. they have a heavier gadge wire going to it. As for the water if it is not antifreeze then you have a leak in your cowl area by the lower windshield. I ran in to this problem on several gm cars such as yours it can be deficult to find good luck

Posted on Oct 20, 2009

Testimonial: "Iccjester, thanks for the information it was very helpful much appreciation Mike S 1999 Buick Century"

  • 3 Answers

SOURCE: A/C Heater blower fan does not cycle through all speeds

Yes it is the blower Motors Resistor board. It is up behind the blower motor, just under the glove box. You have to remove the black KICK panel with its two "Push Pins" that will break too. There are 3 screws holding that resistor board in, the back two are a bear to get to. Good luck.

Posted on Feb 26, 2010

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My car is RAV4 toyota blow fan not working on 1,2,3 but #4 working only I replace switch but same as before,Please would give what I do next. Thank you.


Sounds like you have a bad blower motor resistor (manual HVAC). The resistor is just that a set of resistors in serious that drop voltage to regulate fan speed. Speed one uses all the resistors to drop the voltage the most. Speed for doesn't use the resistors so full power can be used by the blower motor to make it work at full speed.

The resistor is typically located near the blower motor under the passenger side of the dash. and will have 4-5 wires going to it.

Apr 20, 2011 | 2007 Toyota RAV4

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Blower motor does not work?


Blower motor problems are a pretty common topic. This is a basic guide on how to diagnose the problem and will work for most vehicles.

The diagram is generic and loosely based on GM's setup and more specifically a Silverado. Most manufacturers have a similar setup and the only major differences would be a ground side control (instead of the switch supplying power to the resistor it would be grounding the power from the resistor if this is the case you test light would need to be connected to power to test the switch) and late model Chrysler minivans (they use a module that looks for a difference in a/c voltage from the switch)

If the blower works on high only than likely the resistor assembly is the culprit since power to the blower essentially bypasses all of the resistors and/or the resistor assembly entirely. The reason why none off the other speeds will work is that the resistor or the circuit for the speed four setting has burned out. The lower the setting the more resistance you need to drop the voltage to the blower. The first speed setting requires all four resistors to drop the voltage enough to turn the blower at its slowest speed. Speed 2 needs to turn the blower a little faster so it uses three resistors. Speed 3 uses two resistors and speed 4 uses one.

In some cases the fan will work on high and speed setting 4. The likely cause for this is the speed 3 resistor or circuit has burned out. Speed 4 still works because it doesn't use the lower speeds resistors to control the speed of the blower. If the speed 2 resistor burns out than speed 1 and 2 will not work but 3, 4 and high will continue to work. If the speed 1 resistor burns out than speeds 2, 3, 4, and high will continue to work.

This leads us to how do we know if its the resistor or the switch or the blower. If the blower works on high than we know the blower works. That leaves us with either the switch or the resistor assembly (there are many other possibilities) which can be easily tested with a test light (or a voltmeter if you choose) The first thing to do is locate the resistor assemble. They can be behind the glove box, under the dash close to the blower motor or under the hood, again usually close to the blower motor. It will typically have 5 to six wires going to it. We'll start by unplugging the connector, turning the key on and connecting your test light to ground.

1.Turn the switch to high and backprobe all the wires. Two of them should illuminate the test light. In the diagram below this would be wire E & F. If you don't have a diagram then hold the test light on one of the two wires and move the switch to another speed setting. the wire that continuously illuminates the test light regardless of the switch position will be the constant power for high blower speed and will not need to be rechecked in the following steps.

2. Turn the switch to the next lowest setting. Backprobe the remaining wires to see if one of them illuminates the test light. Repeat until you have checked all of the speed settings.

3. If the test light has illuminated a different wire for each setting then we can reasonably assume that the switch is functioning as intended and the source of the problem is the blower resistor.

If you find one or more settings (but not all the settings) on the switch that does not illuminate the test light on any wire than we can reasonably assume that the switch has failed.

There are a few other things that can cause blower motors not to work as intended. The switch or the resistor assembly are the two most common problems.

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on Oct 26, 2010 | Chevrolet Venture Cars & Trucks

1 Answer

The fan speed switch for the heater/ac will not work on the two lowest speeds, only med to high. Went to a salvage yard and got a replacement one, it does the same thing. Apparently there is something...


You need to get the blower motor resistor replaced.This is your problem.It is located by the blower motor.There will be a connector from the blower to the resistor.The resistor controls the fan speeds when you turn the knob on the control head.The blower motor is on the passengers side under the dash.Hope this helps.Good luck.

Mar 05, 2011 | 2003 Buick Century

2 Answers

My 98 Buick Le Sabre heater blower works sometimes and sometimes it doesn't. You just never know.


Sounds like a bad heater control switch OR bad connector to the motor itself. I'd try your local salvage yard or EBAY for a replacement switch. Good Luck. . .

Nov 23, 2010 | Buick LeSabre Cars & Trucks

2 Answers

My blower fan inside the van only works on high. Do I need to replace the switch or is it a relay problem?


Sounds like you have an issue with the blower motor resistor. The resistor is located in the airbox near the blower motor. It is held in place with two screws.

The blower motor resistor uses a series of resistors to drop voltage to lower fan speed. The lowest setting uses the most resistance and the setting below uses the least resistance. Since all of the lower speeds use the resistor that the speed just below high uses if that resistor goes bad it will cause all the other lower speed settings to not work.

Oct 26, 2010 | 2000 Chevrolet Venture

1 Answer

Fan motor will only work when the switch is in the highest speed position


Having the year, make, model, and engine size would help.

But generally when this occurs it is a bad motor resistor. The resistor uses a set of resistors in series to drop voltage to control blower speed. The lowest setting uses all the resistors and the setting below high speed uses on resistor. Since none of the lower speeds work either the resistor for the setting just below high is burned out or the internal fuse has blown. Replacing the blower motor resistor should take care of the problem.

Oct 20, 2010 | Ford F-250 Cars & Trucks

1 Answer

I own a 2005 jeep liberty. the ac, heater fan only works on selector switch setting # 4. nay sugesstions on why fan does not work on settings 1, 2 or 3.


The lower speeds are accomplished by running the power supply through various resistors that drop the voltage which makes the blower turn at different speeds. The lowest setting uses all the resistors to drop the voltage as much as possible to turn the blower as slow as possible. High speed uses no resistors so the blower gets full power and turns as fast as possible.

Since speed 1 and speed 2 use the speed 3 resistor to drop there voltage and speed three is not working as well my guess is the speed three resistor is burnt out in the device referred to as the blower motor resistor or blower motor speed control module. This is located near the blower motor and is held in place with 2 screws. There will be several wires and possibly two connectors plugged into it.

These are really common failures in many vehicles. The parts are usually available at your local auto parts store and they are typically not that expensive.

Hope that helped.

Oct 07, 2010 | 2005 Jeep Liberty

2 Answers

2002 Honda Odyssey fan only works at high speed. The A/C compress


Usually when the blower fan only operates on hi speed, its because of a failed blower motor resistor. You still have hi speed because on hi, the power going to the blower motor goes directly to it, as opposed to the lower speeds, when the power is routed through the resistor, thus lowering the voltage, which in turn lowers the speed of the fan. The resistor is usually located near the blower motor itself, under the hood back near the firewall.

Aug 15, 2009 | 2002 Honda Odyssey

1 Answer

2001 Saturn L200 blower motor does not work in highest switch position. Move switch down to next lowest position and it works normally. This is in AC mode.


Blower motor resistor. Located next to/ near the blower motor itself. These are common failures for no high speed blower operation.

Jul 18, 2009 | 2001 Saturn L-Series

1 Answer

92 lesabre blower motor resistor


It sounds like the switch is stuck on the lowest setting. However that dosen't matter because the blower resistor and switch are usually in the same housing. Remove A/C / heater panel and it should be located right behind nob.

Apr 03, 2009 | 1992 Buick LeSabre

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