Cranking / Starting

[Kabitz]

Hey guys.
I got in my truck (2019 6.7) to take to the dealership for some possible warranty repairs.
The video below is unrelated to the mentioned warranty repairs I am seeking.

I hopped in the truck and pushed the start button… see video.
The truck continuously turns over (without me holding the start button.) and shuts off after 10-15 seconds
The truck finelly started up after the third time and I then drove it to the dealership with no issues...and shared the video with them.

I did change the fuel filters about 5-6 weeks ago, (exactly as I have done several times in the past) properly primed the truck with no problems/issues. The Y78 (fuel pump) was performed in 22-23.

I have 3 years left on the extended warranty and it only has 41,000 miles on it.

My service writer is a little dodgy when I ask them what they think the problem could be, they said aren’t sure at this point but said the tech couldn't get the truck to duplicate the issue in video but ''they have seen this before'' ''and it could be related to fuel filters"...but again they're not sure.

They saw my labels I put on inside of the door with date and service I performed.

RAM 2500 6.7 extended cranking.

2019 Ram 2500 6.7 cranking

www.youtube.com

 

[2003F350]

I can't say with any certainty, but I have come across this issue multiple times in the past on various vehicles.

On our old '99 Firebird, the fuel pump was on its way out, and it finally quit and I had to cut a hole in the rear floorboard or drop the rear axle. Cutting the hole was faster and easier.

On our current Challenger, it ONLY does this when we try to use the push-button start (it has one of those pop in/out push button things, apparently came factory with it, we bought it used). I'm convinced the issue with it is a programming/transmitter/receiver one but I can't say for certain. All I know is, if we use the key, it works fine 100% of the time.

Yours, on the other hand, has the push button hardwired I presume - which means it's not a transmitter/receiver issue.

That said, have you changed the fuel filters in a while? Cummins recommends every 15k or sooner.

 

[nlambert182]

When you push the button it cranks for a specific number of seconds before cancelling, if it doesn't start. That's not uncommon.

Typically if it's extended cranking I would suggest checking fuel filters first. What kind did you use? These trucks are finicky and do not like aftermarket filters of any kind. If you didn't install a MOPAR/Cummins filter, try swapping them out for OEMs.

I don't think the service writer is being shady at all. They dont know what they dont know and if they can't reproduce it, they can't guess.

 

[Kabitz]

I bought the filters from Geno's (QSK1002)
Ill get more info from them today.
I thought when the push / start button was released the cranking should stop. no ?

 

[2003F350]

I thought when the push / start button was released the cranking should stop. no ?

No. You don't have to hold the button at all to start it. Press brake, push button, let go of brake, it's going to crank until it starts or times out. Even if you still had a key (or rather, put the end of your fob into a socket), you don't have to hold it until it starts - Just twist and release and it'll crank until it starts or times out. It's a computer-controlled switch, you pressing the button or turning the fob gives it the signal to start a routine, at which point the computer takes over.

It's not like the old days where you had to hold the key or it would stop cranking. Think of it as the computer holds the key, you're just telling it to do it.

 

[Kabitz]

No. You don't have to hold the button at all to start it. Press brake, push button, let go of brake, it's going to crank until it starts or times out. Even if you still had a key (or rather, put the end of your fob into a socket), you don't have to hold it until it starts - Just twist and release and it'll crank until it starts or times out. It's a computer-controlled switch, you pressing the button or turning the fob gives it the signal to start a routine, at which point the computer takes over.

It's not like the old days where you had to hold the key or it would stop cranking. Think of it as the computer holds the key, you're just telling it to do it.

So 15 seconds is the prescribed maximum number of seconds it's going to crank while (trying) to start ?
15 seconds seems excessive.

 

[nlambert182]

I bought the filters from Geno's (QS

I bought the filters from Geno's (QSK1002)
Ill get more info from them today.
I thought when the push / start button was released the cranking should stop. no ?

Those are OEM Mopars. It's possible that there's air in the system, but just as possible that something else is going on. Hard to tell.

2003F350 covered it on cranking. It's perfectly normal. 15 seconds seems a bit excessive, but time it and make sure. I've seen them do that when they have air in the lines.

 

[turkeybird56]

OP, the truck still cranking when button depressed/key turned and let go is called: "Tip Start". 15 seconds seems long, not sure on OEM set length, but U may want them to see if they can go into BCM and change the length if you are worried.

OP, go to this URL: Post # 4.

Question about starting/ignition

Hey, Just wondering.. When you turn the key to ignition it automatically engages the starter for a few seconds even if you only turn the key quickly and then let go. If you understand what I'm referring to... it's not required to hold the key while the starter is going, you only need to turn...

www.ramforum.com

 

[Kabitz]

Those are OEM Mopars. It's possible that there's air in the system, but just as possible that something else is going on. Hard to tell.

2003F350 covered it on cranking. It's perfectly normal. 15 seconds seems a bit excessive, but time it and make sure. I've seen them do that when they have air in the lines.

It happened three times in a row and it was / is pretty close to 15 seconds, I timed it when it was happening and now we cant get it to duplicate.

 

[nlambert182]

Was it right after replacing the filters? You very well may have had air in the system that has worked itself out. Quite honestly, if it doesn't keep doing it I wouldn't be concerned with it.

 

[Kabitz]

Filters where changed 5 weeks ago.

 

[nlambert182]

I'm still leaning towards air in the system that has worked its way out. How many times did it crank normally after the filter change before this started? Was it pretty close to that or a few weeks after?


If it isn't still an issue I would ignore it until/unless it came back.

 

[Kabitz]

Fuel filters where changed on 1/18/25.
it has been driven at least 100 times to and from destinations and has cranked normally up until that very moment.
I'm leaning towards (maybe) dirty fuel.
I bought the truck new in 2019 and it has started and ran near flawlessly with zero problems.
We used to tow our boat with it and it ran great.

 

[nlambert182]

Hmm... definitely a possibility I suppose. In any regard, if it's working fine now I probably wouldn't stress over it too much.

 

[Kabitz]

Hmm... definitely a possibility I suppose. In any regard, if it's working fine now I probably wouldn't stress over it too much.

Agreed.