Possible Hurricane misfire at cruising speed.

[CapeCodChris]

I have a 2025 Ram 1500 Laramie with the standard output huricane with 1700 miles. When I'm driving and the truck is in 7th or 8th gear and i put light pressure on the gas pedal to either maintain speed or slightly accelerate, I feel a studder. It's not constant. Sometimes it's there, sometimes it's not. When I step on the gas harder or when I'm accelerating faster It goes away. I have no check engine light but it does feel like a misfire. Has anyone else had this problem. It started happening when I got about 1200 miles on it. Dealership keeps telling me if there was anything going on in the engine it would trigger a check engine light.

 

[USMUSL]

There have been a bunch of the Hurricanes with misfire, so that might be what you’re feeling.

However, what you describe is also a sensation that’s common on turbo’d motors. I had several Taurus SHO’s, and they did it, one really badly. Something to do with the watergate, IIRC. It’s a light studder in high gear under light throttle but some load (like going uphill). The sensation is exacerbated if going over a wavy/bumpy road. I can feel it just a hair in my 25 Ram.

I’m not saying that’s what you’re feeling …. just throwing it out there.

 

[v8440]

Not seeing a check engine light is no guarantee it's not misfiring like hell. In the unsuccessful attempts to fix my '25 laramie, one pcm update greatly raised the threshold for turning the check engine light on during misfires. The talk at the time was that because the misfire problem was so prevalent, people with strict emission inspections were failing with brand new trucks because the light kept coming on due to misfires. Sooo...just make it much harder for the light to come on. That was their solution at the time. As soon as I got one particular update the light would stay off until it had been misfiring for a lot longer than it used to take. Now, it didn't actually FIX anything, the truck still ran like crap, but it kept the light off for much longer.

 

[jmr]

I'm curious what fuel are you using regular or premium?

 

[v8440]

I got less than two tanks worth of driving from the truck. I don't know what the dealer put in for the first tank, probably 87. Second wad 88 octane 15% ethanol. That fuel is probably still in it, unless they refilled it. Truck has 1069 miles or so. I've owned it 9 months or so.

 

[jmr]

I know the manual says 87 is fine probably for better marketing.
These engines run best on premium I've seen gains with ignition timing and holding boost longer using 93.
Direct Connection states Fuel Type: Premium and it's the same Standard Output CAT1 Hurricane engine in the RAM.

 

[Eighty]

The users manual says this:

3.0L STANDARD OUTPUT ENGINE​

Do not use E-85 flex fuel or ethanol blends greater than 15% in this engine.

This engine is designed to meet all emissions requirements, and provide satisfactory fuel economy and performance, when using high-quality unleaded regular gasoline having an octane rating of 87, as specified by the (R+M)/2 method. The use of 91 or higher octane premium gasoline will allow these engines to operate to optimal performance. This increase in performance is most noticeable in hot weather or under heavy load conditions such as while towing.