Does Your 2025 RAM 1500 Make Noise After Shutdown? If you've recently purchased a 2025 RAM 1500 with the all-new 3.0L Hurricane Twin Turbo Inline-6 (SST) engine, you may notice a quiet humming, whirring, or buzzing noise coming from the engine bay after shutting the truck off. While it might sound unusual, don’t worry — this noise is completely normal and is a sign your truck is protecting itself.
🔊 Why Does My RAM 1500 Make Noise When Turned Off?
If you’ve walked away from your 2025 RAM 1500 with the 3.0L Hurricane SST engine and heard a faint hum, you're not alone. This post-shutdown sound is caused by a secondary electric cooling system — a smart, protective feature designed to keep your engine components safe.
🔧 It's the Electric Cooling Pump Doing Its Job
The 3.0L Hurricane Twin Turbo I6 engine uses an advanced secondary electric coolant pump to manage residual heat after engine shutdown. This pump continues to circulate coolant around the turbochargers and engine block, which prevents:
- Turbo oil coking
- Engine heat soak
- Long-term component damage
The pump typically runs for a few minutes — but up to 10 minutes is normal — especially after towing or spirited driving.
🎧 Common Sounds You Might Hear
When parked and turned off, you might hear:
- A low electric motor humming or whirring
- A faint coolant gurgling or flowing sound
- A soft fan-like noise from under the hood
These sounds can be more noticeable during warm weather or after long drives.
🔥 Why This Post-Shutdown Cooling Process Is Critical
The high-performance Hurricane twin-turbo engine reaches extreme temperatures — particularly around the turbochargers. If coolant and oil sit idle in the system after shutdown, the intense heat can cause:
- Oil coking (burning oil into carbon deposits inside turbo bearings)
- Heat soak (spreading heat into nearby sensors, hoses, and engine components)
By keeping coolant flowing, the system prevents premature wear, clogs, and damage — boosting both reliability and engine life.
📽️ What the RAM Engine Sounds Like After Shutdown
Here’s a short video clip of my 2025 RAM 1500 cooling down after shutdown — the electric coolant pump sound is clearly audible:
⚠️ When to Be Concerned
In most cases, the cooling system noise after shutdown is perfectly normal. However, you should have your truck checked if you notice any of the following:
- The pump runs for more than 15 minutes
- Battery warning lights appear
- You notice a significant battery drain overnight
A malfunctioning sensor or relay could cause the pump to stay on too long — but this is rare.
Summary: 3.0L Hurricane Engine Shutdown Cooling Noise
To summarize:
- The sound is your RAM's secondary electric cooling pump working
- It helps prevent oil coking and engine heat soak
- This protects the twin turbo system and engine components long after shutdown
- The noise is most common after hot or aggressive driving
So the next time you hear that subtle hum from under the hood after parking, relax — your 2025 RAM 1500 is just taking care of itself.
Have a similar experience with your RAM 1500? Questions about what you're hearing? Drop me a message — I’d love to hear your story.
P.S. Need to locate your original RAM build sheet or Monroney label? Get your RAM window sticker by VIN number here.