Question about 1989 Buick Electra

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Climate control runs ok when in high, it chugs when on auto

The climate control runs ok whenon high, but when it starts to decrease the fan speed, it just chugs like it is trying get up to speed.

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Resister problem the regulater is bad.

Posted on Dec 20, 2008

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Have a 2009 Nissan Quest I can't turn the heat off. Just stays on a high level of blowing out heat .


If you have a fan that has different speed settings (1234, or low med high etc) and the only one that works is high - then the blower resistor pack has failed. If you have a climate control unit (where you just pick a temp you want) then the fan is controlled by the heating system and it sets fan speed. If you have climate control style try lowering the temp to a lower setting (current temp in vehicle) and see if fan slows down. If not then climate control unit or fan resistor bad. If dial type and you get nothing on lower settings (only high works like mentioned above) you need to change blower resistor. It is located under dash near the fan itself. Look for small unit bolted in duct near fan with wire plug going to it.

Feb 23, 2015 | Nissan Cars & Trucks

1 Answer

1998 dodge intrepid auto climate control. My heater will not turn off, and the fan is stuck on high, and also stuck on the cold temp. I replaced the climate control module and checked all the wiring....


the fan speed control not adjusting usually means the 'resister' is no longer working. Stuck on cold means the 'blend door actuator' is no longer functioning.

Dec 10, 2013 | 1998 Dodge Caravan

1 Answer

Blower fan motor only runs on 3 and 4


easy we love these,
year, car, and model, and actual accurate , symptoms.
i must assume it runs on high , a key factor.
my guess is 4 = max. or high.
most cars high is bypass mode, (direct fan drive)
so tells you that the speed reduction part is DOA. in part or more...
on most cars this is called the fan resistor block.
ill look up that in my USA FSM and see. now.

ok with or without climate control options,
i roll dice and land on none.
this car does have the fan resistor block 3 speeds (resistors) and dirct drive for 4 total speeds.
your resistor block is bad.

if your car has the V6 or advanced climate control option
all the above is Bull.
the CC options uses advance fan modulation to run the fans
PWM its called. and usaully never fails
the CC system has self test mode, its in the FSM , ill not attempt
to do that, pages, long.....
there you go,
Btw all this was at alldata.com and the free fsm.

http://hondatech.info/downloads/Auto/Manuals/Accord/


my guess is, it's a non CC car.

Nov 18, 2013 | 2001 Honda Accord

1 Answer

Climate control fan stays on after jump start, cycling from low to high


Blower motor resister is bad.Easy to remove,it's located by blower motor,click here to see what it looks like.

Jan 17, 2013 | 1998 Nissan Maxima

1 Answer

Why wont my a/c or heater fan come on?


When the blower works only on the high setting its usually a bad blower resistor which is right near the blower motor. now you say it would always blow high regardless of the fan speed setting that would indicate probably the climate control unit or a connector problem somewhere. finally it not working at all may be the climate control unit or connection went bad even further. it might have a blown fuse or a bad blower motor in addition to the climate control unit or connector problem .check for power and ground at the blower motor. the power is supplied from fuses and may have a relay also. the ground is supplied from the climate control unit and goes through the resistor to control the fan speed. good luck

Oct 30, 2011 | 1997 Lincoln Continental

1 Answer

Fan control knob on a/c and heater will only run on high speed. 2003 dodge mini van


I replaced the fan module under the glovebox on my 2005 Town & Country last night. Mine would not shut off at all with key on. It only blew on high no matter where I set the switch. Mine also had the climate control which makes a difference. If it is not the auto climate control it is usually the blower resistor if the other fan speed selections don't blow at all except on high.

Jun 06, 2011 | 2003 Dodge Grand Caravan AWD

3 Answers

I have a 2002 Elantra. Yestreday the lower fan speeds on the air conditioner fan stopped working (positions 1,2,3). The High speed (position 4) works. Any ideas how to correct?


The blower motor resistors or fan switch itself are defective.
High speed has no resistors B+ goes straight to blower motor.

Jun 03, 2010 | 2000 Hyundai Elantra

1 Answer

91 Towncar Blower only works on high


u willl need to replace the blower motor speed control resistor.

Sep 29, 2009 | 1994 Lincoln Town Car

1 Answer

Blower fan does not work on low or medium only on high. Lx model has auto climate control. wondering if it is blower motor, blower resister, or control (bad contacts). All buttons work on climate control....


Sounds like the problem is more with the blower motor assembly itself. The blower motor have micro-proccers built itnto them which comunicate with the control heads and do the actual regulating of the fan motor. Dealers have computers with diagnostic software which allows them to monitor what is happening in the eletronic controls of the vehicle. Electronic diagnostics without the diagnostic software makes it very diffecult to pinpoint the actual item causing the problem.

Jan 01, 2009 | Hyundai Motor 2003 Sonata

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