Ford Econoline E Series The full size van is alive and well at FMC, with the heart of the F series trucks in both cargo vans and passenger vans.

E-150 A/C blows cold, but only out of the front de-fogging vents!

  #1  
Old 07-11-2018, 06:41 PM
Junior Member
Thread Starter
Join Date: Jul 2018
Posts: 2
Default E-150 A/C blows cold, but only out of the front de-frost vents!

Hey all. So the air won’t come out of any other vents, no response from the switch. Any ideas?

Model is 2001 E-150 passenger van. Rear a/c is also messed up - it blows but only hot air.
 

Last edited by tstigler; 07-11-2018 at 06:47 PM.
  #2  
Old 07-11-2018, 07:06 PM
Senior Member
Join Date: Jun 2010
Posts: 9,077
Default

You might start with checking the vacuum lines for a leak or possibly came off.
Start in the engine compartment.
 
  #3  
Old 07-11-2018, 09:47 PM
Junior Member
Thread Starter
Join Date: Jul 2018
Posts: 2
Default

Originally Posted by hanky View Post
You might start with checking the vacuum lines for a leak or possibly came off.
Start in the engine compartment.
Would the A/C still blow cold if there was a leak in the system?
 
  #4  
Old 07-12-2018, 03:13 AM
Senior Member
Join Date: Jun 2010
Posts: 9,077
Default

Some controls were electrically controlled and some were vacuum controlled.
With the vacuum controlled systems when vacuum was lost due to a leak the system would automatically go to defrost mode (default).
If you are not sure where to look the vacuum is made available from usually a hose connection starting at the intake manifold then changes to small plastic tubing and is routed to various pieces among which is one line that goes into the passenger compartment to control heater & air conditioning controls. Sometimes a plastic tubing will come off it's connection and sometimes the tubing due to heat or age will crack and develop a leak. Often if you are near the engine compartment when someone shuts off the engine you can hear the vacuum leaking down until the reservoir is empty. Many times you can see the plastic line dangling if it broke or came off.


The A/C system can function normally, but the cold air is not directed to the proper place.
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
jdupont824
General Tech
2
07-14-2008 04:57 PM
hawkbug
Ford Freestar
5
04-07-2008 01:33 PM
GENUINE907
Ford Ranger
3
10-16-2007 10:40 AM
GENUINE907
General Tech
1
05-15-2007 03:28 AM
jtcove
Ford Expedition
1
11-07-2006 02:14 AM


Thread Tools
Search this Thread
Quick Reply: E-150 A/C blows cold, but only out of the front de-fogging 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.