2017 1500 5.7 cranks but doesn't start seems to a fuel issue.

[Ken226]

Did he say why the permanent codes were there ?

Yes. Most recently in the first paragraph of post 116.




So, the moral of the story is......



When @Slinge posts a suggestion like the one back in post #57, a couple pages back, here:

Floor mat on gas pedal ?

Even if it seems like a long shot and that checking it is gonna cost 8 seconds of your life you'll never get back,

It's probably time well spent.

 

[Ken226]

Okay, when I first tried to start the truck and it didn't start. When I first started working on vehicles my mentor told me always start with the easiest first so I used the code readers to see what there was and it was the two permanent codes that came up the P025A and they U0109. Which those codes do not go away until the problem is resolved. So that is where I started trying to figure out why it wasn't starting.
So the diagnostic guy came and I explain to him everything I did what was happening etc. He put his tool on it was a Ancel. So there was a plethora of codes that we were looking through everything, not connecting to the radio not connecting to the window motor not connecting to the transmission not connecting to the steering etc. A lot of numbers outside the parameters in which they should be in. Throwing up all little red flags. So then he said we're going to start it and go live to see what's going on. He goes to start it and notices my floor mat is hitting the gas pedal. He tells me these trucks will not start if you depress the gas pedal and try to start it it doesn't want to flood the engine with fuel.
The night before I took my molded winter floor mats out and wash them and put them back in. I have long legs and I don't know if All other trucks have this but under the steering column there's a button to move the break and gas pedal forward or towards the firewall I have it all the way towards the firewall. So when I installed the molded floor mats I put it under the gas pedal but they have the holes in them to Go on to the hooks that are embedded in the carpet in the truck so when I pulled the mat towards the hook it came out from under the gas pedal which I didn't notice. So now the mat is resting on the edge of the gas pedal depressing it. That's why the truck wouldn't start.
If the truck started that first time and was revving high I would have immediately looked down there but being it didn't start and through codes for the fuel pump and the fuel pump control module I didn't think to look down there.
So that's my story and I'm sticking to it.
Once again thanks to everyone for their input and trying to help I really appreciate the time that you spent trying to get me back on the road.

Im glad you got it sorted out and hope you get a million miles out of it.

Don't be afraid to ask for help. I'd take a little embarrassment from something i overlooked over a broke down truck, 10x out of 10.

 

[Flstss]

Did he say why the permanent codes were there ?

I read on my scanner they were permanent codes. And they don't get deleted from it till I fixed.

 

[Flstss]

Even if it seems like a long shot and that checking it is gonna cost 8 seconds of your life you'll never get back,

It's probably time well spen

I know, that was due to the fact that it was revving at 4000 when it finally started. I went down the path of the first two codes that had to do with the fuel pressure control module and the fuel pump. Had the truck started the first time and rev high that would have been the first place I looked. I don't know what was done that all of a sudden it started. Because I shot some starting fluid in there and it just sputtered but didn't start. Then all of a sudden after I check the injectors with the little light diode tool it started and rev to like 4000. That didn't make sense to me. 2 minutes before it didn't start and then all of a sudden it started at that high RPM.

 

[Ken226]

I know, that was due to the fact that it was revving at 4000 when it finally started. I went down the path of the first two codes that had to do with the fuel pressure control module and the fuel pump. Had the truck started the first time and rev high that would have been the first place I looked. I don't know what was done that all of a sudden it started. Because I shot some starting fluid in there and it just sputtered but didn't start. Then all of a sudden after I check the injectors with the little light diode tool it started and rev to like 4000. That didn't make sense to me. 2 minutes before it didn't start and then all of a sudden it started at that high RPM.

It seems plausible that the initial no start was because the floor-mat had the pedal mashed all the way down, in clear-flood mode.

And plausible that while trying to diagnose the no-start, the codes were set due to disconnecting and reconnecting cables/connectors. The fuel pump module codes being the permanent type (can't be cleared) further confounded the issue, as you thought they were still active codes. The permanent codes require a half dozen warmup/shutdown cycles to clear themselves, they can't be cleared with a scan tool.

At some point, while (presumably a helper) crawled in and unwittingly moved the floor-mat, partially un-fouling the throttle, then began cranking while you inspected the noid light. The floor mat now only partially pushing the throttle, resulted in a revving engine..

Then the mobile diagnostician arrived, discovered the wayward floor mat, and charged you 500$ for 3 clicks of his staple gun to repair the loose floormat..

 

[Slinge]

so the codes are gone ?
or still there ?

 

[EdGs]

Even though it may suck to have been something easily overlooked, it is resolved now, and that is a huge relief.

Been there, done that.

 

[Flstss]

so the codes are gone ?
or still there ?

Yes once the floor mat was moved and the engine started as normal the problem was gone and the code were gone. I only have one code that has to do with the humidity unit. Which has been there for a long time.

 

[turkeybird56]

I read on my scanner they were permanent codes. And they don't get deleted from this fixed

Kewl

 

[Flstss]

And plausible that while trying to diagnose the no-start, the codes were set due to disconnecting and reconnecting cables/connectors. The fuel pump module codes being the permanent type (can't be cleared) further confounded the issue, as you thought they were still active codes. The permanent codes require a half dozen warmup/shutdown cycles to clear themselves, they can't be cleared with a scan tool.

The codes for the fuel pump and control module were set as soon as the no start occurred. That's why I started from there. When it didn't start, I used my scanner to see if there were codes it was P025A and U0109. That's why I started at the fuel source. I don't know if Chris cleared the codes but everything was gone after the start up and shut down.

 

[Marshall]

Okay, when I first tried to start the truck and it didn't start. When I first started working on vehicles my mentor told me always start with the easiest first so I used the code readers to see what there was and it was the two permanent codes that came up the P025A and they U0109. Which those codes do not go away until the problem is resolved. So that is where I started trying to figure out why it wasn't starting.
So the diagnostic guy came and I explain to him everything I did what was happening etc. He put his tool on it was a Ancel. So there was a plethora of codes that we were looking through everything, not connecting to the radio not connecting to the window motor not connecting to the transmission not connecting to the steering etc. A lot of numbers outside the parameters in which they should be in. Throwing up all little red flags. So then he said we're going to start it and go live to see what's going on. He goes to start it and notices my floor mat is hitting the gas pedal. He tells me these trucks will not start if you depress the gas pedal and try to start it it doesn't want to flood the engine with fuel.
The night before I took my molded winter floor mats out and wash them and put them back in. I have long legs and I don't know if All other trucks have this but under the steering column there's a button to move the break and gas pedal forward or towards the firewall I have it all the way towards the firewall. So when I installed the molded floor mats I put it under the gas pedal but they have the holes in them to Go on to the hooks that are embedded in the carpet in the truck so when I pulled the mat towards the hook it came out from under the gas pedal which I didn't notice. So now the mat is resting on the edge of the gas pedal depressing it. That's why the truck wouldn't start.
If the truck started that first time and was revving high I would have immediately looked down there but being it didn't start and through codes for the fuel pump and the fuel pump control module I didn't think to look down there.
So that's my story and I'm sticking to it.
Once again thanks to everyone for their input and trying to help I really appreciate the time that you spent trying to get me back on the road.

You are not the first one that has has this happen, a few weeks ago there was a similar post on trucks taking off at stop lights and such, it was floor mats on gas peddles if I remember correct.

This is right up there with the fellow spending gobs of money on code readers, relays, and fuel pump to find out that the gas tank had no gas in it when tank was dropped to install a new fuel pump, because the float was stuck I heard.

Mind you some people seem to think think they can run around with low tanks and get better milage.
Milage is great when the truck is on a hook.

I do understand that beer is more important then gas when you are young and its Sat. night.

I am thinking that when it started , as some said , the mat was hard down on the gas, I don't know where the cut off point is on these, could depend on mats and the throttle set up I guess.

 

[turkeybird56]

Chit happens. Also know as Murphy’s Law. Sometimes it just gets U. All u can do is laugh and carry on. IMHO.