We're adding and testing new features:  Create your Garage, used it? Give us some feedback here.
Honda Civic Forum Home - Honda Civic Classifieds - Civic Photo Galleries - Create an Account

Go Back   HondaCivicForum.com > General Automotive > Mechanical Problems & Technical Chat
Sign in using an external account
Register Forgot Password?
Search



Welcome to the HondaCivicForum.com.
If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.

Reply
 
 
 
 
LinkBack Thread Tools Search this Thread Display Modes
  #1  
Old 06-26-2008, 03:18 PM
 
Join Date: Jun 2008
Posts: 3
Default AC/Heater fan not working

Hello,

I've got a 97 Civic and the fan is not working on the AC/Heater. The AC works - as does the heat - air will force through the vents while driving and blow hot or cold, but the fan does not turn on.

For a long time, it only stopped working intermittently, Then it started not working when it gor extremely hot or extremely cold (of course). Later, it would come back on when I hit a bump or ran over a railroad track.

Lately, it's just not worked at all.

Recently, I took it in for inspection and they said I needed an "AC Motor Mount" which apparently meant the motor mount on the "AC side" of the motor. My thinking is, if the motor mount was loos/broken, hitting those bumps may have been hitting the AC fan motor and that's why it would come back on.

Anyways, it sounds like it could be simply aloose connection that's finally come all the way loose. Anyway, what I want to know is if there's any way I can check? I don't even know where any of that stuff is! Is the AC fan motor accessible from under the hood, or is it a take the dash out kind of thing?


TIA
Reply With Quote
  #2  
Old 06-26-2008, 03:45 PM
RonJ's Avatar
Recognized HCF Member
1997 Honda Civic
 
Join Date: Sep 2007
Location: Houston, Texas
Posts: 9,450
Default RE: AC/Heater fan not working

The A/C motor mount is likely a separate unrelated issue.

It sounds like the condenser fan (next to radiator fan) is fine and that the blower motor (passenger front side just behind glove box) or its circuit is the problem.

1) Start by supplying battery power directly to the blower motor. If it runs, the problem is with the circuit (steps 2-4). Note whether the blower connector is loose.

2) Check whether fuse no. 55 (under-hood) or no. 17 (under-dash) is blown or loose.

3) Check whether the blower motor fan relay in the under-hood fuse relay box is faulty.

4) Check whether the blower resistor or blower switch is bad.

For details, see link to the 96-98 service manual in my signature.
Reply With Quote
  #3  
Old 06-26-2008, 07:38 PM
Recognized HCF Member
 
Join Date: Jun 2007
Posts: 9,879
Default RE: AC/Heater fan not working

Look up under the dash on the extreme right side of the car. You will see a cylindrical part on a black plastic flange which is the bottom of the motor. Plugged into it is a 2 wire plug, the power for the motor. Turn the key on and set the fan on high and measure the voltage between the 2 wires. If you have approximately 12 volts there but the motor doesn't run, the motor is bad. I think you can take the screws out and R&R the motor without taking any of the dash apart.

If you have zero volts keep checking the fuses, relay, switch, and resistor.
Reply With Quote
  #4  
Old 06-28-2008, 09:20 AM
 
Join Date: Jun 2008
Posts: 3
Default RE: AC/Heater fan not working

Ok, thanks for the "dummy" explanation (which I sorely need).

I'll check the voltage and see what's going on.

Thanks,
Steve
Reply With Quote
  #5  
Old 07-01-2008, 01:36 PM
 
Join Date: Jun 2008
Posts: 3
Default RE: AC/Heater fan not working

Thanks Guys!

I was able to remove the old fan, troubleshoot, and bought a new one and replaced it myself.

I feel both a sense of accomplishment and a sense of cool!!!

Thanks again.

Steve
Reply With Quote
Old 07-01-2008, 01:36 PM
 
 
 
Reply

Tags
96, 98, ac, blower, broken, civic, fan, fans, heater, honda, intermittently, liek, sounds, turn, working

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Advertising

Featured Sponsors
Vendor Directory
Our Sponsors
Civic Custom Rims
AMSOIL - Performance Oil Technology
K&N Engineering
Advertise Here
All times are GMT -8. The time now is 12:53 PM.

Internet Brands, Inc.
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.


Honda and the Honda marquee are registered trademarks of the American Honda Motor Company, Inc. Neither American Honda Motor Company nor its subsidiaries or affiliates shall bear any responsibility for HondaCivicforum.com content, comments, or advertising. HondaCivicforum.com is not affiliated with American Honda Motor Company in any way. American Honda Motor Company does not sponsor, support, or endorse HondaCivicforum.com in any way. Copyright/trademark/sales mark infringements are not intended or implied.