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Blower motor runs continously . Local repair service con't get relay parts.

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Not much of a repair service. Generic fan relay parts are readily available from any HVAC supply house. Fan relays do not have to be Original Equipment.

Posted on Sep 25, 2009

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Posted on Jan 02, 2017

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We have a 1990 Ford aerostar minivan and the blower motor isn't working. I don't know where the resistor is or where the blower motor is located. Anyone know?


Blower motor is in dashboard. Problem could be with motor windings, bearings, fuse, relay, and switch. Check them all out.

Nov 13, 2015 | Ford Cars & Trucks

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Heater A/C blower runs all the time


One of cpl things most likely the blower control switch stuck in high or the blower motor shorted in high last thing a short in the wire. Would suspect the actual blower motor 1st.

Oct 07, 2014 | 2006 Kia Sportage

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I hooked the battery post up backwards an it caused all sorts of things to happen the one I need help with is when I go to turn on my heater/AC none of it works at all it don't blow or anything..


It's amazing the car even runs. Reverse polarity on a car battery will usually fry the ECU, which is the computer that runs everything from the engine timing to smog control. Consider yourself lucky.
You must have had the Blower motor in the On position and tried to start the car after the battery hookup.
First start at the fuse for the Blower motor, which may be under the drivers side dash or in the engine compartment. (you did not specify the vehicle make)
If the fuse is OK, then the relay may be fried. relays are usually under the hood inside the big fuse/relay box. Look at the fuse/relay legend (map) inside the cover and locate the relay for the Blower motor. It may just have a 'fan blade' symbol. Exchange it for a relay of the same type and style in the same box. Put the 'new' relay in the blower motor socket. Turn the key to the 'On' position (just before 'Start') and test the blower motor. Turn the key off. If it worked, take the bad relay to a car parts store and buy a new one. It'll cost between $10 and $50. I know, doesn't seem worth it.
If that doesn't fix it, return the relays to their original position and go to the parts store and buy a repair manual for your year, make and model. Locate the section on Heat/AC and replace the Blower Motor Resistor. That's probably the culprit. Short of that, take it to the dealer or a good repair shop, that you trust. It can be an involved repair job.

Jul 05, 2014 | Cars & Trucks

2 Answers

Blower motor will not shut off


I can't speak to the cost, a local dealer can do that. As for the reason the fan runs on, it sounds like either a stuck power relay (location should be in the owners manual) or a bad fan speed regulator. Since the fan is stuck on high, I suspect the fan speed regulator is bad. On some cars the regulator is part of the fan assembly, and on some it's separate. Also, there is a possibility you can repair the circuit board, assuming it's something as simple as a burnt out diode. Best of luck!

Jan 19, 2012 | 2005 Chevrolet Impala

1 Answer

Fan runs continously


Hello, if you are referring to the blower motor than umhook the green wire on the G terminal at the control board, if this stops the blower than either a short in the low voltage wiring or a bad thermostat. If it does not stop the relay on the integrated control board is bad and the board must be replaced.

Nov 29, 2011 | Heating & Cooling

1 Answer

The furnace at my house was off for about a year. I had to replace the ignitor. Now my fan runs all the time even when the burners are off. I changed the thermostat and still I my fan runs all the time.


Hello, Sounds like the the relay on the intergrated control board is bad. When this relay sticks it will cause the blower motor to run continously. The only option is to replace the control board.

Jan 30, 2011 | Heating & Cooling

1 Answer

1998 Oldsmobile Aurora HVAC blower runs continously even ign. off


The blower motor control module is under the dash on the inside of the passenger side. I'm not sure what you mean by the AC Blower.... the blower contols levels and on and off. The air won't work at all if this goes.. I had it replaced on mine and had an on/off switch put in while the part came in and it cost me 217 bucks. Hope this helps.

Jul 02, 2009 | 1998 Oldsmobile Aurora

3 Answers

Blower motor stopped working.


https://www.genuineservice.com/genuineservice/en/default?page=genuineService

Go to this site and you can get a copy of your owners manual. Just pic the owner's manual link in the left side task bar.
The relay is located in the interior fuse panel. It should show you a diagram of the fuse panel in the owners manual.

Mar 02, 2009 | 2003 Ford Taurus

1 Answer

97 e-250 work van


To be honest with you I hate the way Ford has decided to make fuse and relay identification so difficult. The imprint on the covers say "refer to owner's manual", but if you don't have one then you will have to invest in a DIY repair manual. You can typically purchase these at most auto parts stores. You could also check your local library. There are online services that you have to buy a subscription to use. Try Chiltons, Haynes, All Data, online services. Hope this helps.

Oct 22, 2008 | 2004 Ford E250

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