2015 ram 1500 5.7 stalls on first cold start of day. It will also stall if temp is below 40 and sitting all day while at work.

10

Asked by Dec 15, 2015 at 11:52 AM about the 2015 Ram 1500 Outdoorsman Quad Cab 4WD

Question type: Maintenance & Repair

On first try to start vehicle each morning or evening
after sitting for 8+ hours, it try's to start...may run for a
second or two then stalls. (Every time on first try)
Restart successful immediately thereafter. Every time.
What happens randomly is the rpm's (on second start)
shoots up to 3-4k...sometimes and then levels out. No
Engine light on. No codes set. No drive ability issues.
No hesitations. After vehicle starts...it's all good. I have
noticed my fuel mileage has decreased by 2 mpg on
average. I drive the same route every day. No variations.
The vehicle currently has 9,200 miles. From factory the
coolant level was low. Added 1/2 gallon. Level is good
now.

6 Answers

5

Take it back to the dealer!!

10

Joe...that's BRILLIANT!!!

1 out of 1 people think this is helpful.

Scottie, did they find anything yet?

Hi Scottie. I have a 2015 Ram sport 5.7 that dose this exact same thing. I have noticed that it only dose it when cool and very high humidity. Had it to the dealer and they found nothing. (Of course they couldn't replicate it) when it starts and doesn't stall it will run very rough before the rpm shoots up to 3-4K. And as yours no check engine light and no codes. And no drivability issues. Very interested to hear if yours has been resolved and if so what was found.

10

No Leonard. Not yet. But it hasn't been to a dealership since January. Kevjordan...with temps dropping, it's doing the same exact thing again this year. I'm taking it to another dealer this time to get another diagnosis. What part of the country are you in? What dealership did you buy it from?

Hi Scottie. I am in Calgary Alberta Canada. I have noticed that my truck will only exhibit this concern in the spring and in the fall. Doesn't really do it in the summer and won't do it after the temp drops below freezing. I purchased the truck last January and did not experience any concerns until March it was ok over the summer and then started acting up again this fall. The weather has now changed and I don't expect anything to show up until spring. Very frustrating to know that it has this issue and nothing can be done. The truck is miss firing at start up and straightens itself out within about 7-10 seconds and is fine. I have done some research and found that these trucks turn off the miss fire detection at cold start. Hence why there is no check engine light. I look forward to hear if yours gets rectified in the near future. Mine was just at the dealer for ten days and nothing was rectified. Unfourtunatly it did not act up during this visit.

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