Mechanics ? Dodge diesel

Let the Dodge Cummins sit outside last night. It was plugged in. Tried to start it a couple times with the remote starter this morning. No go. When I go out and use the key the glow plug indicator isn’t on and when I turn the key it rolls over once and thats it. No clicking or anything. Is there a reset button or something to try or if I let it sit a few hours will it reset it’s self? It has never done this before.

Thanks for the help.

What’s your batteries voltage?? I’d get some chargers on them right away. While you’re at it pull the positive post off both and see if that resets anything.

Call your dealer and see if they have any ideas too.

Could also be a problem with the electronic throttle control/computer.

Do you have a lightning bolt type warning light on?

My last truck was a Ram Ecodiesel (not a Cummins) and I had some computer bugs that only happened in extreme cold. One time it was -18 and the truck thought it was 60 degrees out…..

So the glow plugs wouldn’t work……

A computer update straightened out the problem.

My 2018 Cummins has been flawless so far through two winters.

Thanks, this is a ’14 Cummins with 300,000 on it. First time for this. No lightning bolt which is the glow plug indicator.

When i had my cummins plugged in the coolant temp would reach 59f so the grid heater (cummins don’t use glow plugs) would not turn on because it was already warm. But your batteries are still -20. With it this cold your batteries are probably shot.

Do you have a battery load tester? Hopefully you do, but if not just use a multimeter and see where you’re at voltage wise.

Test batteries and then I’d put a charger on them and hit the glow plug button just to see if the dash glow plug light will light up. If it does, you’ve found the problem.

If you don’t have a battery load tester, Harbor Freight’s el cheapo battery tester is the best $20 I’ve spent in a long time. Easily saved the $20 the first time I used it.

Grouse

This cold snap wont last long. If it’s never happened before just let it sit till saturday if u can. Your autostarting could have run the batteries down depending on how long it cranks over before timing out. Bad news is if u left the discharged batteries all day they might have froze and u mite end up replacing them. Either charging them right away or removing them and bringing inside would have been the best thing but if they are original you are coming due to replace them anyways. As far as the light and heat grid i would see if its still an issue with good batteries and warm weather. Next time plug it in when it gets this cold…lots of juice required to spin cold engine

Also to test or charge dual batteries you should disconnect them both to test/charge them. Disconnect both negatives first then positives and reverse the process when hooking back up is the best practice

Thanks. I have no intention of touching it until it warms up. Both batteries likely need replacing…it’s time. BTW, the truck was plugged in.

Thanks for everyones advice.

Sorry I am late to the party!
I was going to offer that if batteries are good an intake air temperature switch or engine coolant switch was sending below threshold signal code it will not crank over.

Without a a Cummins ECU scanner the only way to clear codes is to disconnect both batteries and connect the positive and negative cables together so that they will drain the capacitors that are used for the keep alive memory memory in the Cummins ECU, this may take up to eight hours to do.

You have my number if I can be of further assistance.

Most likely the batteries are below acceptable voltage limits to allow a start situation.

Little update…..

I put the battery charger on all day and with the warming weather it popped off and started this evening.

Thanks for all the suggestions guys.

Good deal, now park that Ford.

Eelpoutguy wrote:

Good deal, now park that Ford.

You know anybody else that has 430,000 on a 6.0 Powerstroke?

Turning into a rust bucket but it keeps on running.

You know anybody else that has 430,000 on a 6.0 Powerstroke?

I know a butt load of em,and every one of them spent the last 400,000 behind a tow truck!!!

just kidding ya Ducthboy,thee biggest problem with the 6.0 was that it was designed to have a 30,000 pound load behind it all day everyday instead of being a grocery getter or kids first pick up.
it was never intended to be lightly loaded or a daily driver,after market programmers ended its life prematurely as they over stroked the injectors causing them to die from excessive heat electrically.
as much as I detest anything ford built,that motor was underrated as far as its potential and should of been sold only to operators who know how to run a diesel engine properly.