Squeal on startup?

[volckano]

Hey y'all,

I recently purchased a 2019 Ram 1500 Laramie with a 5.7L Hemi V8 eTorque, and it has around 50,000 miles on it.

Lately, I've been noticing a squealing noise during some of my startups, but both the dealer and I have been unable to pinpoint the source of the issue or the sound itself. Video attached.

Here's what I've been able to figure out so far:

• The sound seems to be coming from underneath the vehicle, and I haven't detected any squealing noise in the engine area.
• The squeal doesn't occur during every startup. It usually happens on the second or third startup of the day. Interestingly, I haven't heard this noise during a cold start in the morning.
• If I try to start the truck multiple times in a row, the noise doesn't occur. It typically only happens on the initial startup after the truck has been parked for a short period.
• I haven't heard the sound when I use the remote start feature.

I would greatly appreciate any insights or suggestions regarding this issue. Please let me know if you have any similar experiences or if there's any additional information that would be helpful in diagnosing this problem. Thanks in advance

https://imgur.com/a/FfU9Mty

 

[stevj]

Not hearing a squeal, but mine makes a similar mechanical sound on cold start after sitting for a couple days. Mine is lifter noise.
When the engine just sits, some hydraulic valve lifters will leak down a little.
This leak-down is a very slow process for the lifters depressed when the engine is off.
Once the engine starts and the lifters immediately fill back up with oil under pressure, the sound goes away.
Might be what you have.

Steve

 

[John Galt]

When I was a kid, my dad would rub a stick of butter on the serpentine belt to fix starter squeak.


Im not suggesting this is a good idea.

 

[6of36]

Can't really hear it in that video, but from what you say about when it happens, it is probably the belt squealing. At that mileage a new belt is probably a good idea to replace anyway, but the problem may be due to a weak belt tensioner.

 

[uncc_99xj]

It sounds just like the noise the V6 is known to make across other FCA models. Video example here:

https://www.jlwranglerforums.com/forum/threads/squeal-at-start-up.11848/page-4

For what it's worth, our GC with the 3.6 has done this since day 1 with no ill effects. Original consensus a while back was that it was a belt squeal on startup, but glancing through that thread it seems to be more related to brake pedal pressure/brake booster on startup. Maybe try some of the suggestions in there to see if it goes away?