NHTSA Complaint #11441491 — 2019 RAM 1500

When I was driving roughly 25 to mph I lost all power. Engine was still rubbing and revving because I was pressing the gas but I lost all power to accelerate and no check engine lights were in. All guards were fine and I have over 3/4 of a tank of gas. I have noticed upon acceleration at random times I will have difficultly accelerating. I heard a loud knocking at which time the dealer said it was a lifter. I took it to an independent shop after the service tech Andrew told me it’s a smart motor and will correct itself so no need to make any repairs. I was told at the independent repair shop that I had a manifold problem and they replace the manifold. But today noticed again I’ve lost power and unable to accelerate while going 49 mph. Again told by Andrew that it’s a smart engine and will correct itself however it’sa safety issue when driving the freeway