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

APPS Wiring

Thread Tools
 
Search this Thread
 
Old Apr 3, 2012 | 05:45 PM
  #1  
RegansDiesel's Avatar
Thread Starter
|
Diesel Fan
Joined: Sep 2011
Posts: 34
Likes: 0
Default APPS Wiring

Hey guys my 24v wont rev up to the 3200 rev limiter. It will rev up to 2600 then cut out. I replaced the APPS sensor with a timbo one and it didnt fix the problem. Could the problem be that i extended the sensor wiring into the cab for a different application (ford conversion) and im thinking that the extension of 3 ft of wire makes the signal weak. Thanks ahead guys.
 
Reply
Old Apr 3, 2012 | 07:25 PM
  #2  
empty wallet's Avatar
Diesel Wrench
Joined: Jun 2011
Posts: 667
Likes: 118
From: New England
Default

That's all they fuel to stock. Need a programmer, hot edge comp or quadzilla.
 
Reply
Old Apr 4, 2012 | 08:17 AM
  #3  
RAW's Avatar
RAW
Administrator

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

Does it do this under load, or no load. Regardless, it should rev much higher in either situation.
 
Reply
Old Apr 4, 2012 | 09:20 AM
  #4  
RAW's Avatar
RAW
Administrator

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

Maybe this will help:
http://dodgeram.org/tech/dsl/ECM/figures/ecm2.gif
 
Reply
Old Apr 4, 2012 | 01:24 PM
  #5  
RegansDiesel's Avatar
Thread Starter
|
Diesel Fan
Joined: Sep 2011
Posts: 34
Likes: 0
Default

At an idle sitting there it will rev up to 2700 then fall on its face. While driving it only revs up to 2100. And driving there is intermediate dead pedal no response from the sensor.It's a brand new engine with a brand new vp44 and lift pump. When i go back home from school in a week thinking about cutting the wires i added into the cab soldering back the original wires to 6 pin plug and getting a manual pedal with a cable to pull it. (Pretty much putting it back to the stock dodge 24v setup for the apps) Do you guys think that will fix it? I checked voltage and it barely had over 5.02. Thanks Guys for the help
 
Reply
Old Apr 4, 2012 | 05:34 PM
  #6  
RAW's Avatar
RAW
Administrator

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

5.02V is fine, as it is a 5V sensor. Why were wires added into the cab? To run off the Ford pedal? The Cummins APPS has an idle validation, and off idle validation signal as well as position sensor. That could be part of the issue.
 
Reply
Old Apr 4, 2012 | 07:01 PM
  #7  
RegansDiesel's Avatar
Thread Starter
|
Diesel Fan
Joined: Sep 2011
Posts: 34
Likes: 0
Default

Yes, the wires were extended to run the sensor off the ford pedal. My AC compressor is in the position of where the apps is usually mounted forward of the intake elbow. Can you elaborate on the idle variation signal?
 
Reply
Old Apr 5, 2012 | 08:54 AM
  #8  
RAW's Avatar
RAW
Administrator

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

If you open the link, and zoom in on the top left it shows the sensor. After the pedal/sensor moves a certain amount, the ECM needs to see that it is no longer on the idle stop. If it doesn't, it will throw codes. I believe it is a redundant safety system. If the Ford pedal doesn't have this, it is most likely the problem. I can't see extended wires being the problem, not if they were soldered properly.
I'm not sure of the internals of the Ford pedal, and how it works. It may be possible to take the Cummins sensor and adapt it into the Fords pedal housing.
How did you determine which wire goes where into the Ford pedal? Get a schematic of it anywhere?
 
Reply
Old Apr 5, 2012 | 10:24 AM
  #9  
RegansDiesel's Avatar
Thread Starter
|
Diesel Fan
Joined: Sep 2011
Posts: 34
Likes: 0
Default

Hey Ra Williams i tried opening the link and it brought me to a page that said i do not have access to this page. I have the wires extended to the apps sensor which is mounted on the ford pedal. All the electronics are cummins parts, but the little rib on the ford pedal moves the inlet on the apps sensor giving me rpm acceleration.I dont have any wires from my ford pedal connected to the cummins apps sensor just the one 90 degrees mechanical stub that moves the apps sensor.
 
Reply
Old Apr 5, 2012 | 11:26 AM
  #10  
RAW's Avatar
RAW
Administrator

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

Try this one, and click on Left Half.
ECM details for 1998-2002 Dodge Ram trucks with 24 Valve Cummins diesel engine
 
Reply



All times are GMT -5. The time now is 02:31 AM.