Cold air intake noise

Just noticed this noise when turn off the truck.

[Psydrre]

I think your engine is sneezing, might need to get some blankets and warm chicken soup for it.

[Ortizjan]

it's normal just the sound it makes when it's not sucking in air anymore aka the car turning off

[ValOzuna]

So after a few trucks and a few cold air intakes and since I'm still getting comments on this I thought I'd mention that yeah this is normal for cold air intake. I have a 5th gen dodge now with cold air intake and makes the exact same noise

[manicunderground]

Completely normal it’s the butterfly valve closing

[bentenxl]

I know this video is old, but for anyone curious, my old scion used to do this a lot when shutting the engine off. excess air escaping, i had a short ram intake and it would do that. not all the time but a good amount of the time it did.

[ProdFylee]

Sounds like the slurpee machine at 7/11

[fernandomunoz]

Just changed my spark plugs and this sound happened for the first time, thought i broke something 😅

[SylersGarage]

Bless you! Give little Silvia a tissue

[JHERI]

If it just recently started change the check valve in your brake booster hose, it sounds like it’s releasing built up vacuum back into the intake.

[Sasseman]

I have something similar strapped to my Ford 4.6, mine last longer making that noise but no drivability problems

[sa-ataga]

هذا لايعطي السيارة شيئا من الفخامة والجودة ولوكان طبيعيا ولايدل على عطل أوفشل فالصوت هذا يجعلني أبيع سيارتي GMC فأنا أحب فقدكانت قديما سيارات ذات جودة

[thepilotman]

Honestly sounds like an intake valve is not quite closed. Either because of damage or where the engine happened to stop

[rollinwithrowdy]

I’m actually curious bc I’m about to do a cold air intake on my truck how did you get it to sound like that I want mine to do that

[MonaLuso]

Is nothing, its the valve systems, and you hear because you have a come filter instead the original box and filter

[nananooknak]

Vacuum is still sucking with less air restriction. Probably fine

[diogoferreira]

I think these are the intake flaps closing when turning off the engine

[ntune]

when you cut off the car the air has too go somewhere so it goes out the relive valve

[ivancaravantes]

sounds like my Honda when I do that also

[dieselburner]

What’s the popping sound on the intake when idling? Ford 4.0 on rangers tend to do that

[kingmike]

Not sure what it is but my girl Honda does the exact same thing...