24 Valve 2nd Gen Dodge Cummins 98.5-02 Discussion of 24 Valve 5.9 Liter Dodge Cummins Diesels with VP44 Injection Pumps
Sponsored by Trailer Plus

vacuum?

Thread Tools
 
Search this Thread
 
Old Apr 21, 2011 | 08:52 PM
  #1  
txswm58's Avatar
Thread Starter
|
Newbie
Joined: Sep 2008
Posts: 8
Likes: 0
Default vacuum?

my ac only blows thru defroster vents and cruise control stopped working.where is a good place to start?
 
Reply
Old Apr 21, 2011 | 09:05 PM
  #2  
RAW's Avatar
RAW
Administrator

iTrader: (1)
Joined: Aug 2009
Posts: 6,218
Likes: 684
From: Alberta
Default

At the vacuum pump, located below the Injection pump. Look for a black hose with a rubber boot, it needs to be connected to the vac. pump.
 
Reply
Old Apr 21, 2011 | 09:17 PM
  #3  
txswm58's Avatar
Thread Starter
|
Newbie
Joined: Sep 2008
Posts: 8
Likes: 0
Default

it is connected checked all that could vacuum pump be bad? am i even on the rite track?
 
Reply
Old Apr 21, 2011 | 09:40 PM
  #4  
RAW's Avatar
RAW
Administrator

iTrader: (1)
Joined: Aug 2009
Posts: 6,218
Likes: 684
From: Alberta
Default

I'm pretty sure your on the right track. Both cruise and the vents are controlled by vacuum. Start the engine, remove the line to the vac pump, and put your finger on the vac pump. Feel for the suction, if there is suction on you finger it should be OK.
 
Reply
Old Apr 21, 2011 | 09:42 PM
  #5  
7.3 Cowboy's Avatar
Diesel Wrench
Joined: Dec 2008
Posts: 869
Likes: 15
From: Polo, Missouri
Default Re: vacuum?

Make sure the line ain't cracked.

Sent from my DROIDX using Tapatalk
 
Reply
Old Apr 21, 2011 | 09:50 PM
  #6  
txswm58's Avatar
Thread Starter
|
Newbie
Joined: Sep 2008
Posts: 8
Likes: 0
Default

there is vacuum but its very little
 
Reply
Old Apr 23, 2011 | 01:55 PM
  #7  
pukie370's Avatar
Diesel Enthusiast
Joined: Dec 2010
Posts: 295
Likes: 6
Default

Your on the right track, look for bad hoses, there is a coupling right above turbo that can melt from heat. I would also put vac gauge on pump i dont know for shure but i would asume you should have 10-15 inch off vacume maybee more.
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
DC_DC41
12 Valve 2nd Gen Dodge Cummins 94-98
2
Jul 16, 2015 09:56 PM
DeLuzGN
24 Valve 2nd Gen Dodge Cummins 98.5-02
5
Mar 17, 2015 08:08 AM
cutthroatxxx
24 Valve 2nd Gen Dodge Cummins 98.5-02
1
Mar 13, 2015 08:41 AM
LTreis702
Chevy/GMC 6.2L and 6.5L
4
Feb 14, 2015 12:52 PM
casper83
12 Valve 2nd Gen Dodge Cummins 94-98
0
Jan 21, 2015 09:36 PM




All times are GMT -5. The time now is 02:38 AM.