Disgusting metal on metal sound shortly after shutting off engine

[RutsyBucket]

Does anyone else have this issue? I took a video after immediately turning off the engine. The worst sound starts about 2 minutes after turning off the engine. It sounds like someone is pulling a nail through a rusty can. Absolute nails on a chalkboard noise, truly disgusting to hear.

Anyone else have this? Is it related to the ac chirp? wtf?

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[Cabby30]

Maybe a loose heat shield scraping on a bolt as it cools / shrinks. Sounds terrible haha

 

[PNWkip]

I am not getting the same visceral reaction as you lol

 

[Sagebrush]

I just want to know if you live next to a swamp? Frogs? Gators?

 

[395North]

Contracting metal somewhere. Stock exhaust?

 

[RutsyBucket]

I am not getting the same visceral reaction as you lol

It’s really bad in person, or maybe I’m just really sensitive to nails on chalkboard / grill scouring noises.

Contracting metal somewhere. Stock exhaust?

Running the Toyota trail dump exhaust

I just want to know if you live next to a swamp? Frogs? Gators?

Carlsbad… a few miles from the ocean. Regularly by the beach.

 

[395North]

It’s really bad in person, or maybe I’m just really sensitive to nails on chalkboard / grill scouring noises.



Running the Toyota trail dump exhaust



Carlsbad… a few miles from the ocean. Regularly by the beach.

dumb question but did you tighten the bolts down real good?

 

[RutsyBucket]

I just want to know if you live next to a swamp? Frogs? Gators?

dumb question but did you tighten the bolts down real good?

not dumb. I did torque them down pretty well, but I never redid it. I’ll give that a shot in the morning and see if it helps.

 

[Sagebrush]

Carlsbad… a few miles from the ocean. Regularly by the beach.

Am I hearing frogs in the video? Or is that the noise?

 

[Cabby30]

I believe he means the sound at 0:57 mark. The rest just sounds like normal cooling metal sounds.

 

[Will721]

Sounds like metal contraction. Perfectly normal, my trucks only done it once since I've owned it. But I did buy in October so only a few days have actually been warm.

It's especially common in motorcycles and turbo engines. Even more so if there's a highway right before shut down. If you know of a bar or hangout where harley riders tend to congregate you can hang out and listen to the bikes after they shut down and compare the noise.

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