Cold start hiccups...

[Condor757]

Been going on for a week now. Northern VA area, temps have been in the low/mid 50s. I’ve only ever put 89 octane gas in the truck, which has 11500 miles. I crank it up and when the engine catches it sputters, almost quits then catches and the RPMs go nuts for a few cycles. Then it stabilizes. Does not happen on warm (subsequent) starts.
Not sure if this is just bad gas or a fuel pump issue but I’ve seen it posted before.
Anyone else have this issue and what was the fix? Seriously contemplating calling the dealer.
2019 Ram 1500 Hemi 5.7 no etorque.

 

[Condor757]

Bump. Anyone else having these issues? Today it started up normally, seems to be completely random. I did put in a new tank of 89 octane today, maybe that will help..

 

[Bassinb]

I did this, from this thread: https://5thgenrams.com/community/th...-when-trans-engine-is-cold-anyone-else.22175/


"OPTION TWO-RESET TPS & ACCELERATOR PEDAL (did once and works great so far)
1-Foot OFF of the brake and accelerator pedal
2-Press the START BUTTON until the RUN position is achieved but DO NOT start the vehicle. (If you do, turn off, open door and let everything reset before restarting).
3-Wait until all the instrument panels idiot/cycle lights go OUT (Check Engine light may stay on)
4-Slowly press the accelerator pedal all the way to the floor and then slowly let off. I think a steady and consistent motion is best.
5a-Press START BUTTON again to turn everything off. (Open Door?) Start the truck as normal. That should recalibrate the pedal so that you are using its full range of motion in synch with the throttle body's opening.
or
5b-Press Brake pedal and START BUTTON to start truck."


Plus I changed oil and oil filter to Shell Rotella Gas Truck 5w-20 and the 10-48 Royal Purple filter. Since doing that and 20+ starts in 40-50 degrees it has not stumbled on startup again.

 

[Condor757]

Awesome. Will try that. Thx!

 

[Nails]

I’ve had this issue 2 days last week when we got a cold front of of 60s. Cold morning starts it did this a describing

 

[Nails]

Also did it last year when it started getting cooler out.

 

[Renegade3]

In NOVA as well and didn't drive for a few days, when I fired it up it did that then has been fine ever since