No hot air blowing in my 2003 Audi A4 - AudiWorld Forums



A4 (B6 Platform) Discussion Discussion forum for the B6 Audi A4 produced from 2002-2005

No hot air blowing in my 2003 Audi A4

Reply
 
 
 
Thread Tools Search this Thread
Old 11-24-2008, 11:22 AM   #1
Audiworld Junior Member
Thread Starter
 
Join Date: May 2003
Posts: 28
Default No hot air blowing in my 2003 Audi A4

I have a 2003 Audi A4 and my heater is not blowing hot air. It only blows cold air; even though, the heat gauge is normal (1/2).
Does any body have any suggestions as to what this might be? Thank.
alcarazj is offline   Reply With Quote
Old 11-24-2008, 11:46 AM   #2
Junior Member
 
Join Date: Sep 2002
Posts: 417
Default Temperature flaps?

Check for codes in the HVAC module to confirm.
Denim'03 is offline   Reply With Quote
Old 11-24-2008, 12:15 PM   #3
AudiWorld Expert
 
Join Date: Feb 2002
Posts: 34,521
Default

tried it on HI and ECON?
Merkin is offline   Reply With Quote
Old 11-24-2008, 12:51 PM   #4
AudiWorld Senior Member
 
Join Date: Jan 2003
Posts: 1,758
Default

is it overheating as well?
wisconsin_quat is offline   Reply With Quote
Old 11-24-2008, 01:34 PM   #5
Audiworld Junior Member
Thread Starter
 
Join Date: May 2003
Posts: 28
Default Re: is it overheating as well?

No, it is not overheating. It works and blows fine as if it was working normal, but it just doesn't blow any hot air. I almost seem like it is something with the coil switch not working, but how would I go about fixing that.
alcarazj is offline   Reply With Quote
Old 11-24-2008, 02:54 PM   #6
AudiWorld Expert
 
Join Date: Jun 2000
Posts: 29,354
Default Is your heater core warm/hot? If so...

the internal flaps which direct airflow over and or around the heater core, may have one of their electric motors gone bad...

One of my previous posts-<ul><li><a href="http://forums.audiworld.com/a4gen2/msgs/1085220.phtml">http://forums.audiworld.com/a4gen2/msgs/1085220.phtml</a</li></ul>
MikTip is offline   Reply With Quote
Old 11-24-2008, 03:10 PM   #7
AudiWorld Expert
 
Join Date: Feb 2002
Posts: 34,521
Default

use vag-com to find any codes, and i'd personally bleed the system a bit through the top screw
Merkin is offline   Reply With Quote
Old 11-25-2008, 12:31 AM   #8
AudiWorld Senior Member
 
Join Date: Jan 2003
Posts: 1,758
Default how many miles? timing belt/ water pump ever replaced?

the water pump impeller from the factory is plastic, which is mounted on a metal shaft and can separate from the shaft. Keep us posted on what you find out.
wisconsin_quat is offline   Reply With Quote
Old 11-25-2008, 06:23 AM   #9
AudiWorld Member
 
Join Date: Sep 2000
Posts: 140
Default

flushed the heater core, it fixed a friends 02 A4 that only blew cold air.
frankkyA4 is offline   Reply With Quote
Old 11-25-2008, 05:05 PM   #10
AudiWorld Member
 
Join Date: Jan 2002
Posts: 172
Default How do you flush just a heater core?

Are you talking about the entire system? Thought they were connected.
ggcrash is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Keep blowing ECU fuse HELP! 2010 A3 2.0T darkmatter661 Audi A3 / S3 / RS3 2 08-25-2016 04:53 PM
convertable top rear glass repair... Crispin TT (Mk1) Discussion 3 10-14-2015 11:05 PM
Clutch slips only when the car is cold G_claudz A4 (B5 Platform) Discussion 2 09-15-2015 11:47 AM
PRND FAILURE Janryk A4 Cabriolet (B6 Platform) Discussion 0 08-30-2015 03:12 AM
Blow off valve SFM5150 1.8T Discussion 2 08-28-2015 06:27 PM


Tags
18t, 1997, 2001, 2002, 2003, a4, air, audi, blowing, blows, cold, core, flush, heater, hot

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 Off
Pingbacks are Off
Refbacks are Off



All times are GMT -8. The time now is 06:59 AM.


 
  • Ask a Question
    Get answers from community experts
What's your question?
Send