Question about 1997 Chevrolet Cavalier

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My fan don't work on 1 and 2 on heat or air

Iget the fan to work on 3and 4 but why don't it work on lower speeds

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  • 113 Answers

9 out of 10 times it's the blower motor resistor. Follow wires from fan to it... Only a few inches, held in by 2 7mm screws

Posted on Nov 21, 2013

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Posted on Jan 02, 2017

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SOURCE: Heater/ac switch speeds 1 and 2 don not work in 99 Silverado

you need a resister found under your air duct by the passenger floor under dash board auto zone sells these for about 25.00 you may as well buy cabin air filters while your at it . 1 of the screws will be a pain to install back into the duct work I left mine out didn,t make a difference . you might have to order it as they are a comman item oh you will need a vacuum to clean up mess from cabin air filters .this is not a hard job .

Posted on Feb 28, 2009

  • 2 Answers

SOURCE: heater fan relay

inside firewall under glove box

Posted on Jul 07, 2009

  • 20 Answers

SOURCE: The AC blows on #4 fan setting but doesn't blow at all on 1-3

That is the blower resistor. 4 is wide open, so, no resistance. I had 4 of them put into my truck. The wires were burnt and shorted the others until the problem was found. Check the plug if you do this yourself.

Posted on Sep 04, 2009

emissionwiz
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SOURCE: fan blower only works on high speed (4) not on any lower speeds

this is caused by the blower resistor as you correctly diagnosed, but the new resistor is blown because the fan motor is drawing to much current and blowing the resistor back out, replace the blower motor and resistor again.

Posted on Sep 15, 2009

  • 623 Answers

SOURCE: fan for the a/c - heat will only work on high.

Common issue for many cars, Jeeps big time. Your "Blower Motor Resister" is defective. The reason for only 4 on the speed is the resistor controls the voltage going to the blower motor on the lower three speeds. This is a common problem, don't let anyone tell you it is the blower moter itself. The part should cost between $20-$40, depending on where purchased. The killer is getting it installed, some are easy to get at behind the glove box, others are up in the dashboard harder to get at. Chevy techs should be well aware of this, and be able to give you a good estimate of repair.

Posted on Oct 01, 2009

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1 Answer

Air condition and heat won't work


Check to see if you are getting voltage to the blower motor if you are the motor is bad if not check the fan speed switch. 1 2 3 or low medium high if you get voltage going to the switch but not from replace the switch if you have voltage from switch check the blower motor resistor the although with the blower resistor you commonly have a high fan speed in the max setting and the lower speed settings don't work wich would make you think 1 2 3 are not working but 4 is. That is why it is best to check all parts to make sure the part you do replace needed to be replaced

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2002 ford focus fan knob not working at all 1 2 3 or 4 to turn heat on, although you can feel minimal heat coming from the vents.


Probably a blown fuse? Does the AC light come on when it's turned to MAX setting and the fan is on 1 thru 4 speed?It should.
Check all fuses. don-ohio

Sep 27, 2011 | 2000 Ford Focus

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1998 Sunfire GT The fan control for the inside of the vehicle has 4 levels but my level 1 and 2 don't work only 3 and 4 work. How do I fix this issue?


The blower motor resistor has partially failed. Usually when they go out, you will only have high speed, but when one part fails, all speeds lower than the failed part stop working also. You just need to have a blower motor resistor installed and you should be good to go.

May 12, 2011 | 1998 Pontiac Sunfire

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THE HEATER ONLY WORK IN POSITION # 4 THEN DON WORK IN 1, 2, OR 3


only it you is employed at the number 4 for which you have the fan bad control amplifer this one serves for the control of the speeds and eta located behind lower right side of dash. Thanks

Jan 03, 2010 | 2005 Nissan Altima

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Fan for heat/air will not work on 1-4 settings


check the blower motor resistor that is where the different speeds come from

Dec 07, 2009 | 2002 Buick Rendezvous

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Fan for the a/c - heat will only work on high.


Common issue for many cars, Jeeps big time. Your "Blower Motor Resister" is defective. The reason for only 4 on the speed is the resistor controls the voltage going to the blower motor on the lower three speeds. This is a common problem, don't let anyone tell you it is the blower moter itself. The part should cost between $20-$40, depending on where purchased. The killer is getting it installed, some are easy to get at behind the glove box, others are up in the dashboard harder to get at. Chevy techs should be well aware of this, and be able to give you a good estimate of repair.

Oct 01, 2009 | 2005 Chevrolet Colorado

1 Answer

Blower only works on 4 (top speed)


sounds like you need the blower speed resistor...once you put in the new one it will work just fine.......

Sep 19, 2009 | 2000 Ford Focus

1 Answer

The AC blows on #4 fan setting but doesn't blow at all on 1-3


That is the blower resistor. 4 is wide open, so, no resistance. I had 4 of them put into my truck. The wires were burnt and shorted the others until the problem was found. Check the plug if you do this yourself.

Jun 13, 2009 | 2005 Chevrolet Colorado

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Hyundai coupe r/h drive heater


hi from uk your heater fan problem is most likely to be what is known as the resistor pack sometimes called the reostat and is connected to fan motor case it has the wires for fan connected this unit operates rather like an elec hob controlling amount of heat if this simplifies it for you? speeds 1 2 3and 4 gives the speed selected on fan control knob not too difficult to find and diy a replacement? and not too expensive ? these units do burn out occasionally on most cars as they age hope this helps/inspires ?

Jan 08, 2009 | 2000 Hyundai Accent

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Fan speed switch only works on #5


Call your local GMC Dealer and see if they have the climate control panel in stock. What happens is the circuit board on the back of the panel shorts out. The panel comes as an assembly and is very easy to replace. Don't go with a wrecking yard piece. I made that mistake once and it didn't work either. I got one from the Chevy dealer and it worked perfectly.

Aug 21, 2008 | 2002 GMC Sierra

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