Engine decel rattle

[TnWHTMARE]

Hey guys,
Does anyone have a chain/vct rattle on engine decel when cold on your 18? It seems to be under 3K rpm and is pretty pronounced. I recall seeing a TSB for the F150 coyote for a very similar issue. Here is a video link to the noise. Fast forward to 1:25 through 1:37 or so. This is the same video I did to record the tick. I searched and didn't find a specific mention of this particular noise. Could have missed it though.

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[gmupatriot]

Yup, my 2018 Mustang GT has that rattle when cold. Cant ignore it, windows up or down I can hear it. However, it goes away withing a couple of minutes of driving. I have close to 24,xxx miles on the car and so far no issues other than hearing this rattle.

 

[TnWHTMARE]

Yup, my 2018 Mustang GT has that rattle when cold. Cant ignore it, windows up or down I can hear it. However, it goes away withing a couple of minutes of driving. I have close to 24,xxx miles on the car and so far no issues other than hearing this rattle.

Same here, goes away after warm up. I think I'll just put it on the "just ignore that noise" list. Sheesh, cold starts are getting brutal.

 

[Cobra Jet]

Have you guys checked this thread I had started:
https://www.mustang6g.com/forums/threads/could-the-2018-19-s550-5-0-“rattle”-be.119524/

There’s some updated info I had added - and what you are experiencing sounds like it could be related. Not 100% sure, but it’s a very slight possibility and other avenue to check out for the source of the metallic rattle noise.

 

[Tone Everready]

Hey guys,
Does anyone have a chain/vct rattle on engine decel when cold on your 18? It seems to be under 3K rpm and is pretty pronounced. I recall seeing a TSB for the F150 coyote for a very similar issue. Here is a video link to the noise. Fast forward to 1:25 through 1:37 or so. This is the same video I did to record the tick. I searched and didn't find a specific mention of this particular noise. Could have missed it though.

Yup, my 2018 Mustang GT has that rattle when cold. Cant ignore it, windows up or down I can hear it. However, it goes away withing a couple of minutes of driving. I have close to 24,xxx miles on the car and so far no issues other than hearing this rattle.

How do both of your cars sound when up to temperature?

 

[TnWHTMARE]

1. Bascially, what you hear in my video is what it sounds like when warm. Except for the decel chain/vct rattle. It goes TICK, TICK, tick, tick...

 

[Tone Everready]

1. Bascially, what you hear in my video is what it sounds like when warm. Except for the decel chain/vct rattle. It goes TICK, TICK, tick, tick...

So, the BBQ tick doesn't change at all? How many miles on the car? When did this start? Did it all start suddenly, or was it gradual?

 

[TnWHTMARE]

So, the BBQ tick doesn't change at all? How many miles on the car? When did this start? Did it all start suddenly, or was it gradual?

It started when it had around 900 or so miles. It has 5000 now. No, cold or hot, doesn't matter. Seems to do it more when hot than cold and occasionally it doesn't do it at all. But thats the exception. As far as how it started, I just noticed it one morning and it hasn't stopped since.

 

[Tone Everready]

It started when it had around 900 or so miles. It has 5000 now. No, cold or hot, doesn't matter. Seems to do it more when hot than cold and occasionally it doesn't do it at all. But thats the exception. As far as how it started, I just noticed it one morning and it hasn't stopped since.

Have you experimented with oil? Is it worse with the AC on?

 

[TnWHTMARE]

Made the same noise on the factory oil, Mobil1 5w20 and Driven DI30. Have not noticed any variables that seem to impact the noise.

 

[Tone Everready]

Made the same noise on the factory oil, Mobil1 5w20 and Driven DI30. Have not noticed any variables that seem to impact the noise.

That's maddening.

 

[TnWHTMARE]

That's maddening.

What is maddening to me is just not knowing what the actual causation is. I dont particularly like my tick, slap and rattle noises but as long as it stays in one piece, I will deal with it. Its just crazy to me that the exact causes of these noises (except maybe the slap) haven't been determined.

 

[Tone Everready]

What is maddening to me is just not knowing what the actual causation is. I dont particularly like my tick, slap and rattle noises but as long as it stays in one piece, I will deal with it. Its just crazy to me that the exact causes of these noises (except maybe the slap) haven't been determined.

I hear you, brotha. I keep holding on to hope that someday there will be a concrete cause.

 

[TnWHTMARE]

I could be wrong but the interview that Ken from PBD did with MMR still didn't seem to answer the tick question...just the slap. Its unfortunate that we have to deal with these types of noises from 40K cars...but, it is what it is i guess.

 

[Coyote Red]

I have a gen 2 Coyote but have always used Lucas oil stabilizer when I change oil. I've read Ceratec may help the tick.

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