Mopar1973Man

Just remember just one wire pinched in behind part, bolt, or bracket could do it. I had one where the PCM burned up because one wire was rubbing on the trans dipstick tube and fried the voltage regulator.

I wonder ifthe dipstick was traded from another truck by accident and the level is now incorrect. The only other thing I can think off is a ton of sludge in the engine but most likely not true here. At least I hope so.

Were there any steps required for testing or repair on your side before the installation of the ECM for the first time?

It sounds like there was more internally wrong with the ECM, but I still wonder if there was something in the wiring of the truck that could have created this issue?

4 hours ago, PilotHouse2500 said:

Good news! Paint guy is starting work on TOOD on Monday!

What?

Paint?

What color(s)?

The only thing I can suggest is contacting https://idahodrivetrain.com/ . You should be able to get information from them,

Technically, the coolant sensor will control idle, but only in an OVERHEAT condition, it will drop existing RPM by about 400 RPMs. This is not the solution, but a normal reaction. I found this way back in the day by using a rheostat to vary coolant temperature. Just to let you know, this is a normal reaction to the sensor unplugged because it's a high volt code (+5V) and the ECM reacts accordingly.

Still, you have an APPS issue, most likely on the APPS sensor is not providing a proper idle validation signal. This will force the ECM to drop the APPS sensor signal and run the Cummins idle software, which is a perfect 800 RPM's.

Now the only other way to raise idle is bad injectors. If your injectors have over 100k miles you need to replace the injectors being as pop pressure falls and idle speed rises. I've seen trucks idling at ZERO percent engine load and idle speed of 900 RPM, being the ECM cannot cut fuel any deeper, and idle cannot be obtained.

3 minutes ago, Sycostang67 said:

They sent me a lengthy email explaining everything they did and how all the issues I had were reflected in the condition of my ecm.

Could you bring that over here so I can review what is going on? I'd love to help I need to know what they found to help you out.

4 minutes ago, Sycostang67 said:

Right now I need to borrow a truck to move some stuff around to make room for the ram in the backyard before my hoa notices it hasn’t moved in over 6 weeks.

Stupid HOA rules.

Geno's sells the replacement dipsticks if needed.

2nd Gen Cummins have been 11 quarts for a long time. Its only when you switch to 3rd Gen the 12 quart oil system came to being.

Most likely a bad APPS sensor. The is a idle validation switch inside the APPS sensor. So if you have mess with or adjusted the sensor its possible you are stuck in throttle mode and idle will not happen. I suggest getting a Timbo's APPS and replace your APPS sensor, this should fix your idle issue.

No ELECTRONICS the Timbo's APPS is fully mechanical.

Now stock APPS. As you can see it requires electronics to make the idle validation work and misadjustment can and will affect idle speed.

@Sycostang67 I'm sorry that you're stuck with your ECM not working.

I know you're upset, but calmly call ACS and find out what information you can about the repairs they have done and any other process or testing BEFORE the ECM is hooked up again. There is a solution, but we have to make sure the truck is ready and does not have another issue in the wiring or another device that will cause the same damage over again.

Auto Computer Specialist does full wiring repairs and testing. Just a tidbit to aid in the adventure.

My only problem is this test was designed for home person to test. If you pull the alternator and bench that is done under full load.

Either way excessive AC noise will cause...

• VP44 damage (PSG, P1688 or P1689)

• ECM damage (P0606 but could be a all hi or lo volt codes of all sensors)

• PCM damage (P1698 code typically but also code have hi or lo volt code of sensors)

AC noise puts a lot of stress on transistors and IC chips.

On my truck it made the cruise control to wander +10 or -10 cycling past it's set point of 65 MPH. Either way AC noise pollutes the AC signals from HAL effect sensors like crank sensors or speed sensors like ABS.

Small correction...

it seems like it's mostly fuel related issue. You can't obtain the speed you are requesting of the engine. The idle speed is lower. Be aware idle speed will change with coolant temperature, but typically when it's way high, like above 225℉. I've played with a rheostat and varied the resistance of engine coolant to see what it controls. IAT will change the aspect of the timing of the VP44. The higher IAT is much more stable for efficiency. (80 to 140℉) is optimal.

I'll keep thinking on this why I'm working here on the site. I'll dig for an answer.

What is your lift pump pressure to the injection pump? Optimally, you should see 15 to 17 PSI of fuel pressure to the injection pump. Sounds like it's starving for fuel. Measure this at WOT (Wide Open Throttle) at highway speeds to be sure you have plenty of fuel pressure under heavy demands.

Here in Idaho, I just got back from camping up in McCall, Idaho, and it was about 100℉ (37°C) outside for the last few days. Remember, I'm running Beast with a 200℉ Thermostat from a 2012 6.7L Cummins with zero issues, even towing my RV. With my Quadzilla I rarely see above 140℉ fuel temperatures, 175℉ engine oil temperature.

The only device capable of failure without codes is the VP44. There is several cases where the VP44 just no longer will fuel properly and just not throw any codes being its consider failed within specifications. Sadly its true. ECM will typically have a series of low/high volt codes and P0606. PCM will typically throw P1698 IIRC.

This combo is roughly 17,600 pounds (7,983 kgs) rolling up grades of 7% no issues.

You could use the part number lookup up tool then do a search on the internet of the part number it would tell you more about the bolts and nuts.

Correction. It only reports commanded timing only.

Look for anything with looseness...

• Shocks - remove and check for gas charge and suppression. Weak shocks can allow the the axle to bounce.

• Tie Rod Ends - look for any loose tie rod ends.

• Ball joints - Check for vertical movement by prying upwards on a hanging tire.

• Tires - Any deformity? Properly balanced?

• Wheels - Are your wheels true and now bent or out of true?

• Steering shock - It helps, but it's not a cure-all fix, either like some websites mention. Some people omit this shock.

I would like to welcome @Sufarry to the staff and he will be handling the Gallery Moderation. He's going to get people posting pictures and sharing their truck photos.

Thank you.

@Sufarry It was a great conversation on the phone. Sorry, I've been missing in action for a while between the landslide, clearing @Tweety Bird place out, and moving here, and then my bladder cancer.

My notes on this after this hour-long phone call. It is not mechanical that we can find it's a bad signal being created by the ECM and feeding the VP44 the bad information, which makes it knock. I know he is waiting for a Cummins crank sensor to arrive. I've got a few ideas, but I just have to wait for the sensor to arrive for the owner to reinstall the starter and give it a try.

4,500 PSI is stock (310 bar)

4,750 PSI is Max (327 bar)

4,250 PSI is Min (293 bar)

You want your pressures closer to the 4,500 to 4,600 PSI. Im running 4,641 PSI which is 320 bar.

Look at my article for injector cleaning to shim the shim which is under the spring in the body.

Should see positive pressure at all times. Say above 5 PSI. Optimal would be no less than 10 PSI at WOT at highway speed.

All the check valve and regulator is in the sender.

There are only 4 wires. +5V (gauge), sender GND (not body ground), +12V for pump, GND for pump (body ground)

Like my previous pump made noise but zero pressure.

Just one in the fuel tank about 300 dollars for a quality pump. One of the few reasons I ditched stock in my 2006.

Even with a new lift pump in my 2006 I was able to pull fuel pressure into a vacuum state. The in tank pumps are low quality and should be replaced with an AirDog (suggested).