I have a couple of issues with my 1999 24v that's been bugging me.
 

1. Lately it's been getting cold here in New Mexico and I noticed that my grid heater doesn't cycle until the engine has been started. The wait to start light never comes on anymore, not even for a split second, and my lift pump no longer does the 1-2 second prime before engine start. Is it a bad ECM?

2. My truck is a 5 speed nv4500, when I first picked it up I used to be able to take off from a dead stop in second gear just fine, plenty of torque to get it to move even starting on an incline. Now I have to start off in first gear slowly, it feels like it's hesitating/bogging down. I can't even think about second gear starts anymore. I'm not sure what it could be.

3. I just replaced my APPS sensor thinking the old one was the problem but I guess not, followed all directions as stated on the piece of paper I got from DAP. When I monitor the throttle % on my Edge monitor it'll only go up to 89% at WOT, I'm stumped on what it could be. I've cleaned all the contacts in the engine bay, replaced the alternator trying to make sure it's not any noise causing it to read but it's still only goes up to 89%.

My mods are: 1999 ram 2500 24v 5 speed w/351k miles, Edge Juice with Attitude, DAP 7x.009 SAC injectors, AFE Intake manifold, BD pulse manifold, Head studs, FASS 150, BHAF.

 

The truck doesn't throw any CEL's or codes scanning with the Edge. Any advice is appreciated

Edited November 23, 20168 yr by Cronus577

There's no code pulled from the JWA, It's also strange that the cruise control light doesn't come on either or rather it rarely comes on even through cruise control will still work, i've got a big list of parts that I need to get but mainly focused on making sure the ECM is good or bad. I really need a spare unit to test with but not many people willing to lend me one lol. But from everything i've read from Mopar1973man every sign leads to the memory on the ECM going bad. 

And there's no noise from the grid heater or lift pump when i cycle the key like there should be

Noise is one thing but did you actually test for power at those devices?

27 minutes ago, Me78569 said:

Why does it not come on when the cluster test is run then?   genuinely curious

 

Because the WTS light is not controlled by the cluster but directly from the ECM so... No, the WTS light is not controlled by the cluster module so it can't be tested during the cluster test.

Interesting.

 

They went through all the trouble to design the PITA CCD network to make all modules talk but didn't allow the pcm to see the WTS hahahaha.  

 

 

Thanks dodge.

 

 

@Mopar1973Man thanks for clearing that up

As you follow the orange/black lead...

 

You'll see the WTS is not part of the cluster so the WTS is directly from the ECM. Kind of good that gives that indication that there is a problem booting up the ECM because it doesn't light up when it should.

Oddly enough, I went through the fuse box in the engine bay and swapped the 20A fuse to the ECM and now the WTS light comes on, it's just a little delayed, after all the lights come on and go off, that's when the WTS light comes on, the grid heater cycles as it should and the lift pump does a 2 second prime like it should. Should I be worried about the delay for the WTS light?
Will probably be going through all the fuses and replacing them as well as cleaning all the contacts in the fuse box.

I think you are on the right track by cleaning up the contacts.  

 

our trucks do funny things when they are not happy with the power.  

Since ive owned my truck (aug 16) it has had a delayed wts. The truck then quit giving me a wts but it would always start if i waited a second. I did some work on my fuel lines etc in early nov late oct and the truck would crank up and immediately high rev.

I reset the apps and this seemed to fix it. 

Been driving it for about 10 days now since getting it running right again and today it just quit giving me a wts again.

it was about 20 deg F but truck was plugged in all night and started right up. Im worried that it wont want to start later today when I leave work.

 

All of this points me towards a failing ECM... I guess I will replace the fuse like cronus did, but realistically I think its gonna need an ecm.

 

I tell you what... "dodges are super reliable" is bull... these trucks are so damn sensitive to everything! I already have a girlfriend and its easy enough to get her upset much less this truck! haha

 

You dont realize how many problems they have until you own one and have to wade thru them. I tell people I understand now that these things are an addiction not a blessing haha

 

this is my first post... great site mopar! most (99%) diesel truck forums are of no help at all this one is great.

Edited December 16, 20168 yr by TFaoro
Wording

99% of all electronic problems come from excessive AC noise from the alternator. Way too many people follow bad information on relocating or adding ground wires, adding noise filters, or just modify the wiring system. This all creates a masking effect which makes it harder to detect the AC noise problem but also allows the AC noise to do more damage. 

Not to mention if you start cutting up the wiring harness and are electronically challenged as I am, you pen yourself up for different problems down the road.

 My ECM failed many years ago and the trouble codes were no help. When it went it spit out codes left and right for every system in truck but the ECM. A new fixed it. You do seem to have warning signs of yours failing. Might last a year or a day who knows.

 While these truck do have short comings like any other vehicle, mine has been very reliable. In 15 years mine has only left me stranded three, failed ECM, failed lift pump and a blown radiator. I did loose 4th gear out of the oem tranny but it got me home for the repair. The ecm and the lift pump were expensive repairs, but I learned alot from them and finding this site. Knowledge of the vehicle is priceless and having the help I received here has kept me on the road for 390k with much more to come.