Help!! My defroster is stuck on defroster. - DodgeForum.com


1st Gen Ram Tech '93 & older Rams: This section is for TECHNICAL discussions only, that involve 1993 Rams and older. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.

Help!! My defroster is stuck on defroster.

Reply
 
 
  #1  
Old 11-12-2007, 10:16 PM
royalsfan
royalsfan is offline
Thread Starter
 
Join Date: Oct 2007
Posts: 5
Default Help!! My defroster is stuck on defroster.

My '96 cummins is stuck on defroster. The fan works fine as does the tempature control. But the selector switch will only go off or defrost.If Iturn it to the other positions it still comes out the defrost. I replaced the switch to no avail.I tried to find the source for the vacuum but couldn't. My Ford buddy said the diesel dosen't supply enough vacuum so there is a pump. Is that true?Any ideas? Thanks
Reply With Quote
  #2  
Old 11-12-2007, 11:49 PM
Sixtysixdeuce
Sixtysixdeuce is offline
Captain
 
Join Date: Nov 2007
Location:
Posts: 674
Default RE: Help!! My defroster is stuck on defroster.

Quote:
I tried to find the source for the vacuum but couldn't..................Any ideas?
Keep looking. It's there, you've just got to find the unplugged connector or fracture in the tube.
Reply With Quote
  #3  
Old 11-13-2007, 07:21 PM
charlie1935's Avatar
charlie1935
charlie1935 is offline
Record Breaker
 
Join Date: Mar 2004
Location: DuQuoin,IL.
Posts: 1,977
Default RE: Help!! My defroster is stuck on defroster.

There is a vacuum pump on a diesel. No butterfly throttle like on a gas engine which creats a vacuum.
Reply With Quote
  #4  
Old 11-13-2007, 11:09 PM
royalsfan
royalsfan is offline
Thread Starter
 
Join Date: Oct 2007
Posts: 5
Default RE: Help!! My defroster is stuck on defroster.

Where is the pump? Is it electrical or mechanical?
Reply With Quote
  #5  
Old 11-14-2007, 08:50 AM
charlie1935's Avatar
charlie1935
charlie1935 is offline
Record Breaker
 
Join Date: Mar 2004
Location: DuQuoin,IL.
Posts: 1,977
Default RE: Help!! My defroster is stuck on defroster.

I could be wrong, but I think it is electric. Don't know location. One of these diesel owners has to know.
Reply With Quote
  #6  
Old 11-14-2007, 08:07 PM
royalsfan
royalsfan is offline
Thread Starter
 
Join Date: Oct 2007
Posts: 5
Default RE: Help!! My defroster is stuck on defroster.

I feel like an idiot. There is a vacuum pump on front of the ps pump. It has a hose that goes up to the brake booster. There is a tee on that hose that supplies the vacuum for the heater gates. The hose was missing. Fixed it right up.
Reply With Quote
  #7  
Old 11-14-2007, 09:03 PM
Kev_n_AZ
Kev_n_AZ is offline
Banned
 
Join Date: Feb 2007
Location:
Posts: 2,619
Default RE: Help!! My defroster is stuck on defroster.

Quote:
ORIGINAL: royalsfan

My '96 cummins is stuck on defroster. The fan works fine as does the tempature control. But the selector switch will only go off or defrost.If Iturn it to the other positions it still comes out the defrost. I replaced the switch to no avail.I tried to find the source for the vacuum but couldn't. My Ford buddy said the diesel dosen't supply enough vacuum so there is a pump. Is that true?Any ideas? Thanks
thank you for posting.

please post down in the CUMMINS DIESEL section
Reply With Quote
 
 
Reply

Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
drewus
2nd Gen Durango
3
12-01-2015 12:27 AM
neown420
2nd Gen Neon
0
09-29-2015 04:15 PM
Daniel Bordeleau
Dodge Journey
1
09-29-2015 01:38 PM
totallo
2nd Gen Ram Tech
4
09-23-2015 09:12 PM



Thread Tools
Search this Thread

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

Forum Jump


All times are GMT -4. The time now is 10:20 PM.


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