Mopar1973Man

Ok my suggestion is to pull the ECM plug and test with a ohm meter between the ECM plug and the ECT plug it should show 0 ohms. No more than 5 ohm is allowed. Now you do one more test leaving both plugs open. Test between a pin and ground to verify there is no wire shorted to ground this should show infinite ohms or open circuit. If any ohms show then there is a short to ground. If these two test are OK. Then you need to send the ECM in for rebuilding being the problem is most likely internal. Another way is to find another ECM from a friend or shop that is like model truck and swap temporarily and see if the problem goes away. If the problem goes away then the ECM is damaged internally. ECT sensor controls idle speed. As the ECT drops lower it will raise the idle speed up for warm up. I found this out during the development of my high idle kit and using a rheostat on the ECT leads as I dropped the temperature the idle speed rises. Even running one of the foolers 3 or 6 cylinder will drop it to 123*F but no real effect on performance or idle speed. It once it down in the double digits that you see idle rise.

I finally return from up north getting my transmission back. Yup I wore out the gears for the input and counter shaft. Look closely the input shaft had worn through the hard facing and then weaken the teeth and broke off. Again when this failure occurred I had the Quadzilla on level 2. Remember all these gears now had 435k miles and just plain wore out. Jason told me my previous rebuilder (Weller Truck, Boise)did a good job of rebuilding last time and he seen all the updated stuff in the transmission. There isn't much left to upgrade... As for Jason Hammer I talked to him and he's more than wiling to join the forum and help other manual transmission owners. He's very knowledgeable and can work on ANY manual transmission. He is self taught as well. Now here in the future I'm planning on going back up to Spokane, WA and learning from him. He gave me a stellar price on the rebuild and 1 year warranty from this point on. Next step to re-install the transmission. Input shaft and damage... Here you can see the wear that weakened the gear teeth after the hard facing was lost. As for the NV4500 transmission the counter shaft is one piece. Nothing to do but change the entire shaft. Then the gear itself...

This is due to the torque converter allowing more slippage during launching. Still in all the low band (1,500) should be slightly retarded for launching. You should never be cruising near 1,500 realm really being it well below the torque curve of the engine. Like myself I design to get most of my travel time around 2,000 RPMs @ 66 MPH in 5th gear. One of the few factors of why I was able to break the old high mark of 27.2 MPG (Edge Comp and +50HP Injectors) now with 28.04 MPG is my high mark. (Quadzilla and +150 HP Injectors).When you get the timing dialed in you find the EGT drop like a rock. My 55 MPH is super low at 500*F even 65 MPH float about 550*F to 600*F. Two things I'll say timing is the MOST important setting. Then the fuel map should NOT just ramp up from low fuel to max fuel. Again timing your going to have to work with it till its figure out and provides the LOWEST EGTs. Fuel map you'll need a defuel realm to control smoke. Then I would create a STOCK fuel zone where most of the normal driving occurs. Then a POWER mode where when boost rises past your cruise mode it kicks in extra power. Since I live in the mountains and climb hills and grades (7 to 16%) I needed a wide cruise realm between 5 to 15 PSI which is all set for 100% fuel. Now above 15 PSI the fuel ramps up to 150% by the time it hits +30 PSI. Again this design is capable of 24 to 28 MPG. Just look 425 Miles on the trip and just slightly above 1/2 tank. Just quick rough math 1/2 tank is 17.5 gallons. 425 / 17.5 = 24.28 MPG !!! Quadzilla Adrenaline (My custom tune), 150 HP injectors (popped at 320 bar), HX35/40 Hybrid Turbo (60/60/12), 245/75 R16 tires (final ratio to the ground 3.69:1) Another trip... After all my running around I was down to a 3/4 mark and netted 28.04 MPG.

Heck I just scaled Thor on Monday it scaled out at 8,800 pound with all my tools and toolboxes. At least Thor is carrying the weight of tools and stuff that allows me to do my job. Now a 9,000 pound Hummer that can't really haul anything thing because of its mass and weight more you drop in of cargo the less the batteries are going hold up and shorten its travel time just like more weight I put in Thor the more its going to reduce MPG. Mass is Mass... This why I'm glad I got my trans back for Beast and going to go back to my ECO-Diesel. Beast is mere 7,300 pounds and ranging 24 to 28 MPG now.

First off welcome to the family... As for ECT sensor it supplied the +5V and sense on the same lead. So when the sensor is unplugged the ground reference is gone so the temp should max out like it did this is normal. For the ECM to report -40*F means the sense lead is shorting to ground. That is the only way to drop to low volts. I didn't see any mention of reading codes. Could you grab a OBDII reader and list all the P codes here it would help. Don't thing its unusual to see a internal short inside the ECM. I've seen cases where the +5V reference is gone or it seems like every one of the sensor shorted to ground. Worse yet to have the ECM either all hi volt or lo volt codes for everything. Take notice that the ECT sensor is sharing the sensor ground with other sensors. This change through the years but not by much. Take notice that

Like I know of a VP44 injection pump that can produce 1,000 HP plus without any help. Being I helped the member figure out how to increase the flow.

I know I'm past 375 hp. I'm guessing between 450 to 500 hp and about 1200 foot pounds. Turn up the Quadzilla up it's quite easy to light the tires up.

No experience or tools to do the rebuild. Dynamic is still doing in house. Yeah sorry about my last post too many things going on and need a break. Jason Hammer is my guy doing my rebuild. My transmission broke the input gear and the countershaft gear. New countershaft and input gear and being installed. So Jason said he'd be willing to teach me how to rebuild all manuals for Dodge. Then was will join the website and help other members too. Sad part I just found out he's COVID positive and he's trying to finish my transmission for me. As for Jason he's close to Dynamic.

No joke. Lots to be said both ways on the VCO and SAC.

Standard math can't be used to correct map values for boost. I've tired many time but does hold any accuracy. Best to have a boost gauge.

More retard in timing the more EGTs. You wanna see about 19 to 20 degrees at 2000 rpm. Excessive low cruise rpm will also create egts.

I don't even like the 6 speed in Thor. Row 4 gears just to get to 25 MPH. Just 2 gears to get to 25 MPH in The Beast. Now to give some more to the site then gent (Jason Hammer) doing my rebuild is going to teach work to rebuild Nv4500 and 5600 the the g56 as well. Then he's will to register up and help others with manuals. Funny part really close to @Dynamic. East side of Washington as well.

Yup it will be I've gotta go get my transmission very soon. Going to be calling and verify the transmission is ready today.

It's more or less wear taking the hard face off the gears making them brittle and fail. So now at this point most all gears are replaced that are commonly used.

Already been upgraded. Main shaft is upgraded.

I typically run headless. I don't bother with my phone unless in tweaking the tune. I've already got my primary gauges. Boost, fuel pressure and pyrometer. Don't need the phone at all. Not required to operate every key cycle set it up and turn off the app. Put your phone away and drive.

Already ordered a 5 gallon bucket of Mobile 50 Transmission fluid. Sunday I go back up to get my transmission.

Been running the heat pump for since about Sept 20th. Been dropping down low 40s here. Where I'm working at in McCall is getting quite cold too in the morning. So I get to try and sleep in being we all start later at almost 9am. This is to allow frost to break.

Interesting. Hopefully your new controller does not have the tiny boost to fuel table.

The only thing I think you might check is the key in the VP44 pump shaft is it installed correctly with arrow towards the pump. Make sure the number matches the number on the case. Typically with timing slightly retarded it will smoke. Like myself I'm right about 19 to 20 degrees on the Quadzilla. This is a limitation of the Edge tuner. Running 150 HP injectors with little to zero smoke. Everything else seems to check out good.

Nice RV. Funny part the floor plan in the kitchen / living room is very simular to my 2000 Jayco Eagle.

The VP44 shaft nut should be torqued to 125 foot pounds. The 4 mounting nuts should be torqued to 32 foot pounds. Always remember Dodge makes it, Cummins shakes it. Yup it takes some torque to hold it all together.

Yeah when your clearing 250 miles on a just a quarter tank or 425 at a half tank is pretty impressive. My last high mark was done on Edge Comp and +50 HP injectors at 27.2 MPG. The ultimate record is catching the 1997 Dodge 3500 on Diesel Power Magazine that cleared 30 MPG. It can be done it just takes skill driving and know what it likes. For example I've got Jake here and he off and on borrows Thor to drive when his Ford is down. I (myself) can reach 20 to 21 MPG on the over head which hand math turns about 17 to 18 MPG. When Jake borrows the truck he hes get like 17 MPG on the over head but this is actually 14 MPG. This 15% error is from the +50 HP injectors in Thor give this error amount. On the 2002 Dodge I did pop the injectors high at 320 bar. This improved the spray and make the droplets smaller. Being the pop pressure is high it makes the injector slightly late. So on the Quadzilla I had to add a bit more timing to make up. 425 miles on just a half tank. Just doing rough math here in this photo. 425 / 17.5 = 24.28 MPG.

Crazy idea try unplugging the ABS Module. See if the boom is gone.

Yeah the boom noise it not typical. I'm now trying to figure out in my mind what it could be. I've only seen one other truck that did this.