General Tech Help Good at troubleshooting? Have a non specific issue? Discuss general tech topics here.

no air out of vents

 
 
 
 
  #1  
Old 10-26-2006, 11:45 PM
Thread Starter
Join Date: Oct 2006
Posts: 1
flipster125 is an unknown quantity at this point
Default no air out of vents

Hi, hopping someone can shed some light on a problem I have...

First off, my truck's an 89 blazer, 4.3L 4x4, No AC [:@]

When I first got the truck, the heater motor was siezed, so I went to a scrap yard and got another one.

Now the problem... The fan now works, and makes lots of "wind" noise... (I mean LOTS) but... nothing comes out any of the vents. Well, I shouldn't say nothing... if you put your hand up to the defrost vents, you can feel a TINY bit of air comming out, but hardly any. It doesn't seem to be blocked, as at highway speeds, with the fan off, just from the wind there is plenty of airflow... (basically only way my truck ever got warm last winter ) what's wierd is that at highway speeds, turning the fan on REDUCES the amount of air comming out. Also, the heater core works fine... what air that does come out comes out piping hot. I originally suspected I somehow got a fan that blows backwards, but that's not the case. I would really like to have some decent heat this winter... driving in the cold sucks.

Things I've checked...
-The intake for the heater fan is not blocked
-the route from the heater fan to the heater core is not blocked
-the heater core seems fine
-I'm assuming the door that diverts air to the heater core or around it works fine, as the heat control works fine

Things I'm not sure of...
-the air flaps that direct air to the different vents... don't think they work as the vent selector doesn't do much to the airflow at highway speeds, however, as air comes out the defrost, I'd think that with the fan on, air should come out of the defrost no?

I'd rather not rip apart the dash... it's rather old and "brittle" so I'm afraid that if I take it apart, it isn't going to go back together if you know what I mean...
 
  #2  
Old 10-27-2006, 01:37 AM
BF Veteran
Join Date: May 2005
Location: Central Illinois
Posts: 3,891
Hanr3 has a reputation beyond reputeHanr3 has a reputation beyond reputeHanr3 has a reputation beyond reputeHanr3 has a reputation beyond reputeHanr3 has a reputation beyond reputeHanr3 has a reputation beyond reputeHanr3 has a reputation beyond reputeHanr3 has a reputation beyond reputeHanr3 has a reputation beyond reputeHanr3 has a reputation beyond reputeHanr3 has a reputation beyond repute
Default RE: no air out of vents

See the other post in this forum about vents. She is haveing a similar problem, and the answer to your question is there. At least a start to solve the problem is there.
 
 
 
 
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Nikoli
2nd Gen S-series (1995-2005) Tech
2
03-18-2011 06:23 AM
Kellogg
2nd Gen S-series (1995-2005) Tech
5
05-05-2009 01:33 PM
frayja
2nd Gen S-series (1995-2005) Tech
7
10-21-2007 08:47 PM
scoot
2nd Gen S-series (1995-2005) Tech
6
01-08-2007 08:48 PM
ron36535
2nd Gen S-series (1995-2005) Tech
2
12-28-2005 04:05 PM


Thread Tools
Search this Thread
Quick Reply: no air out of vents


Advertising
Featured Sponsors
Vendor Directory

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.