Won’t start at -20C, -4F - Dodge Cummins Diesel Forum
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post #1 of 13 (permalink) Old 01-02-2020, 05:46 PM Thread Starter
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Wont start at -20C, -4F

2019 Ram 2500 When I tried to start it it fired and quit. Next attempt it rolled until I thought it would kill the batteries. Didnt glow. Waited a minute and tried again. Glowed for a bit, sputtered and kept rolling. Then waited ten minutes. Glowed , rolled, sputtered, kept rolling for ages. Seemed to be a little more eager at almost every attempt. After an hour or so of trying every 10 minutes it started. Error lights came on. I realized that it wasnt coming out of 4th. Shut it off and restarted. It had an exhaust error and a trailer error, but no trailer was attached. After restarting the transmission worked properly. After driving for the day all errors were gone
The computer seemed to have lost its mind. After a half hour of trying I put a battery charger on it.
It has about 6000 miles on it.
I heard through the grapevine that the same thing happened to another 2500 the same as mine
Any thoughts??

Thanks very much. Im new to the site
Happy New Year


Last edited by Hueofheather; 01-02-2020 at 05:55 PM. Reason: get rid of apostrophe
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post #2 of 13 (permalink) Old 01-02-2020, 06:08 PM
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Sounds like fuel gelling to me.

The electrical errors possibly from low charge due to continuous cranking.


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post #3 of 13 (permalink) Old 01-03-2020, 03:36 PM
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No clue. My truck, as of this morning, has been tested down to -22F without being plugged in. It started with zero issues, idled up fine and had 178F coolant temps within 12 minutes of idle.

Yours sounds like a fuel issue. Do your local stations go to #1 in winter, or a blend? Are you using additive?
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post #4 of 13 (permalink) Old 01-03-2020, 05:18 PM
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No clue. My truck, as of this morning, has been tested down to -22F without being plugged in. It started with zero issues, idled up fine and had 178F coolant temps within 12 minutes of idle.

Yours sounds like a fuel issue. Do your local stations go to #1 in winter, or a blend? Are you using additive?

Looks like he is in Canada. I do believe they start delivering #1 at the end of September. You would think if the fuel gelled he would have problems until he replaced the filters etc.
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post #5 of 13 (permalink) Old 01-03-2020, 08:18 PM Thread Starter
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no additives. I hadn't used the truck much in a while. May have had 'summer' fuel in it. It has new fuel now so we will see what happens on the next cold day. Any other suggestions are appreciated.
Yes I am Canadian. I'm sure I won't have to wait too long for another cold day
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post #6 of 13 (permalink) Old 01-04-2020, 12:30 AM
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no additives. I hadn't used the truck much in a while. May have had 'summer' fuel in it. It has new fuel now so we will see what happens on the next cold day. Any other suggestions are appreciated.
Yes I am Canadian. I'm sure I won't have to wait too long for another cold day
I just helped a guy today that had fuel in his truck from September and only put a few gallons of winter grade in this week. Worked fine to 0F, but at -20F it wasn't happening. I got bit by it myself as my Duramax hasn't moved since I bought my Ram in September. Now we have two trucks in my shop thawing out and we'll pump them dry and replace with winter grade.

I imagine that if you're right on the edge of having good enough fuel for the temp, and you get the truck running, return fuel will eventually warm things up to clear the filters. I've never checked on my pickups. On my semi's, return fuel is warm enough that the tanks are warm to the touch on a cold day.
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post #7 of 13 (permalink) Old 01-21-2020, 05:56 PM Thread Starter
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Update:

I put new fuel in. 2 cold mornings. -16 and -25C (-13F). Started fine both times.

Thanks!
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post #8 of 13 (permalink) Old 01-21-2020, 07:25 PM
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With those temps I'm assuming you're not in Southern Ontario. I would assume Northern Ontario would treat their fuel fairly early.

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post #9 of 13 (permalink) Old 01-25-2020, 10:39 PM
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My 03 will do this when it's cold. It will get finicky and throw a bunch of codes. Then it will act fine. If I plug it in it will not have any issues.

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post #10 of 13 (permalink) Old 01-26-2020, 12:14 AM
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My 03 will do this when it's cold. It will get finicky and throw a bunch of codes. Then it will act fine. If I plug it in it will not have any issues.
You have issues then.

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post #11 of 13 (permalink) Old 01-26-2020, 10:02 AM
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Keep it in a warm garage. Get some kind of gas engine for winter usage if you cannot keep your truck warm. Use lots and lots of anti-gel products in your fuel. Be sure you are plugged in when hideously cold. Even put a heating blanket or heater under the truck or near both fuel filters.

Better yet, move out of that freezer but do NOT come to Florida. Way, way too many here now.
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post #12 of 13 (permalink) Old 01-26-2020, 11:01 AM
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Quote:
Originally Posted by 1985cucv View Post
My 03 will do this when it's cold. It will get finicky and throw a bunch of codes. Then it will act fine. If I plug it in it will not have any issues.
You have issues then.
For some reason it only sent half my post but it it's more for the electronic aspect of the original post....with your batteries being low on charge weird things happen, like your truck being in 4th gear only, which is why I see codes when I haven't started the 03 truck for a while (1 plus months)

Getting back to the original post I believe as well that your fuel gelled which I'm wondering do these new trucks have a fuel heater I assume they do. And when does it get turned on. Is it on with the accessory button or only when the truck is running?

I know it wouldn't prevent the fuel gelling but just wondering none the less.

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