Engine rattle on cold start between 1500-2000 Rpms....

[monte87]

Hi guys,

2021 mustang GT w Roush stage 2 blower and 13k miles. I've noticed on cold start up I have an engine rattle between 1500-2000rpms until car warms up and drive around a bit it goes away.
What is this?? Anyone else experinece this w there stangs. Please share.

Thanks Anthony

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[Zrussian13]

Sounds like the 2k rattle

 

[monte87]

Sounds like the 2k rattle

Thanks for reply. What is this?? Is it catastrophic.. what's the scoop?
Thanks Anthony

 

[Zrussian13]

Nope sounds like a buzz or rattle. Mostly noticeable when the engine is cold and light to moderate throttle. Mine happens between 1800 and 2800rpm. I started hearing mine over 4 years ago after I put an intake on my car. It's still there 80k miles later. A lot of people speculate it's the DI pump causing it but i don't think anyone has confirmed it. Just another loud characteristic of the coyote I guess.

 

[monte87]

Nope sounds like a buzz or rattle. Mostly noticeable when the engine is cold and light to moderate throttle. Mine happens between 1800 and 2800rpm. I started hearing mine over 4 years ago after I put an intake on my car. It's still there 80k miles later. A lot of people speculate it's the DI pump causing it but i don't think anyone has confirmed it. Just another loud characteristic of the coyote I guess.

Oh ok, i was wondering.. Yeah man, sounds like chain rattle, almost diesel like.. I was like wtf now!?!??!!? I very rarely drive in Quiet mode, but yesterday morning had to leave for work super early and really got to hear it w windows down. It was prominent!!!!! It def only happened when COLD, once it warmed up it was gone. I have the BBQ tick as well, but always add 2 bottles of ceratec every oil change and that issue is gone. Now this.....
I dont think its DI pump, i've had other fords w DI and know that noise. This is diff... This is a rattle-flutter not a tick. Anyways, good to know and hear you have 80k miles and no issues. Its def reassurance, appreciate your reply.
Do you think i should bring to dealer for a documented trip???

Thanks Anthony

 

[LOL WUT]

Every one’s favorite topic.

https://www.mustang6g.com/forums/search/3181512/?q=2k+rattle&c[title_only]=1&o=date

https://www.mustang6g.com/forums/search/3181513/?q=Tick&c[title_only]=1&o=date

 

[monte87]

Every one’s favorite topic.

https://www.mustang6g.com/forums/search/3181512/?q=2k+rattle&c[title_only]=1&o=date

https://www.mustang6g.com/forums/search/3181513/?q=Tick&c[title_only]=1&o=date

Thanks for reply and links. It seems this is a common occurance w coyotes.
Ant

 

[ZXMustang]

I think this is the TivcT rattle of the cam timing gears. It takes a while for the oil to get up to the top and they are a little noisy. Coyote's been doing this since 2011.

 

[monte87]

I think this is the TivcT rattle of the cam timing gears. It takes a while for the oil to get up to the top and they are a little noisy. Coyote's been doing this since 2011.

Thanks for reply. Can this cause an engine failure? My set up is blown, so i am forced to run 5W50 via Roush spec's.. You would think that would be thick enough oil to calm any noises down.

 

[Zrussian13]

Oh ok, i was wondering.. Yeah man, sounds like chain rattle, almost diesel like.. I was like wtf now!?!??!!? I very rarely drive in Quiet mode, but yesterday morning had to leave for work super early and really got to hear it w windows down. It was prominent!!!!! It def only happened when COLD, once it warmed up it was gone. I have the BBQ tick as well, but always add 2 bottles of ceratec every oil change and that issue is gone. Now this.....
I dont think its DI pump, i've had other fords w DI and know that noise. This is diff... This is a rattle-flutter not a tick. Anyways, good to know and hear you have 80k miles and no issues. Its def reassurance, appreciate your reply.
Do you think i should bring to dealer for a documented trip???

Thanks Anthony

Actually I have 84k miles on it but the first time i noticed the noise was around 5k miles. I personally wouldn't go to the dealership but that's mostly due to my hatred for them and their ridiculous wait times out here. Last time I tried to go for warranty work i was quoted 2-3 weeks after I dropped it off before they could look at it. I fixed it myself.

 

[ZXMustang]

Thanks for reply. Can this cause an engine failure? My set up is blown, so i am forced to run 5W50 via Roush spec's.. You would think that would be thick enough oil to calm any noises down.

Nope. Its the cam phasers just rattling as they move the cams position. There was a TSB for this back in 2012 where Ford reflashed the PCM to change how they work at cold so they are not as noisy.

 

[monte87]

Actually I have 84k miles on it but the first time i noticed the noise was around 5k miles. I personally wouldn't go to the dealership but that's mostly due to my hatred for them and their ridiculous wait times out here. Last time I tried to go for warranty work i was quoted 2-3 weeks after I dropped it off before they could look at it. I fixed it myself.

I hear ya, I hate the STEALERSHIPS as well. They are ridiculous!!!!! Im tossed about bringing it, but want documentation.

 

[monte87]

Nope. Its the cam phasers just rattling as they move the cams position. There was a TSB for this back in 2012 where Ford reflashed the PCM to change how they work at cold so they are not as noisy.

oh snap!! no kidding..... via TSB. I wonder if they can reflash my PCm and correct it? or this is something i have to live with and avoid heavy throttle during warm up process...
Anthony

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