VIDEO | Wastegate or Cam Phaser Rattle on cold startup?

MiRhodes

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Hello all,

I bought a 2018 Raptor in March of 2022. I went in and got the 21b08 CSP done as I thought I heard a rattle on startup. Since this update I have noticed the engine studdering when coming to a stop sometimes. I have done extensive research on this and see conflicting suggestions. To save time form everyone I do not need input on a course of action, however I would like some expertise on if the sound I am hearing on cold startup is a wastegate rattle or the actual cam phasers. I have an appointment to get it diagnosed this upcoming week but I am trying to save the appointment fee if this is 100% wastegate. I will like the clips below and hopefully you can hear it well enough to help me narrow down which one this is.


 

2020FordRaptor

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Hello all,

I bought a 2018 Raptor in March of 2022. I went in and got the 21b08 CSP done as I thought I heard a rattle on startup. Since this update I have noticed the engine studdering when coming to a stop sometimes. I have done extensive research on this and see conflicting suggestions. To save time form everyone I do not need input on a course of action, however I would like some expertise on if the sound I am hearing on cold startup is a wastegate rattle or the actual cam phasers. I have an appointment to get it diagnosed this upcoming week but I am trying to save the appointment fee if this is 100% wastegate. I will like the clips below and hopefully you can hear it well enough to help me narrow down which one this is.


Like @FordTechOne said the code is different than what you said. We have the shudder at a stop, and the RPMs will drop to 500 RPM and pop back up to idle, which I feel isn't normal. We also have wastegate rattle but as far as I know it shouldn't cause a problem.
 
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MiRhodes

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Like @FordTechOne said the code is different than what you said. We have the shudder at a stop, and the RPMs will drop to 500 RPM and pop back up to idle, which I feel isn't normal. We also have wastegate rattle but as far as I know it shouldn't cause a problem.
Awesome, thank you for the update. I made the video public as well. Sorry for the confusion on the recall but it was the one for the cam phasers I think I just have the recall code wrong. I may have the dealership revert the PCM update as I believe that will take care of the shuddering.
 

JAWSRaptor

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My truck sounds identical, and as far as im aware its waste gate rattle. Speaking strictly on the noise. Idk about that RPM drop.
 

2020FordRaptor

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Awesome, thank you for the update. I made the video public as well. Sorry for the confusion on the recall but it was the one for the cam phasers I think I just have the recall code wrong. I may have the dealership revert the PCM update as I believe that will take care of the shuddering.
That is wastegate rattle. Exact sound ours makes. I know 2017 MY F150s had a Extended Costumer Satusfaction program for the wastegate rattle but I don't know if newer ones do. @FordTechOne do uou know if they have a ECS for the wastegate rattle on newer vehicles?
 

FordTechOne

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Awesome, thank you for the update. I made the video public as well. Sorry for the confusion on the recall but it was the one for the cam phasers I think I just have the recall code wrong. I may have the dealership revert the PCM update as I believe that will take care of the shuddering.
That is definitely not cam phasers noise. Just typical wastegate rattle.
 

FordTechOne

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That is wastegate rattle. Exact sound ours makes. I know 2017 MY F150s had a Extended Costumer Satusfaction program for the wastegate rattle but I don't know if newer ones do. @FordTechOne do uou know if they have a ECS for the wastegate rattle on newer vehicles?
There was a TSB for 2017 models to add the springs to the linkages, 2018-2020 models already have the springs from the factory. The rattle is just the tolerance built into the linkage for expansion/contraction due to thermal cycling, it’s not detrimental. 2021+ models have a new wastegate actuator design.
 

Roscoe S

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Mine also sounds exactly like that, thank you all for confirming it's not the Cam Phasers . I also got the 21B10 update about a year ago. Never had the Cam Phaser issue
 

Zeusmotorworks

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There was a TSB for 2017 models to add the springs to the linkages, 2018-2020 models already have the springs from the factory. The rattle is just the tolerance built into the linkage for expansion/contraction due to thermal cycling, it’s not detrimental. 2021+ models have a new wastegate actuator design.
Mine is a 2020 with the same cold start "rattlesnake". Has this issue as long as I can remember with about 38k miles on it now. As much as I hate taking a car back EVER, local $tealership dubbed it "normal" for an ecoboost. So should I be looking for missing springs?

Side bar:
You've seen me bust on $tealerships many times, however, although my trust in the instatution has been forever crushed, this does not mean I don't believe in individual techs and mechanics like yourself. Your and other's wisdom/EXPERIENCE is much appreciated here.
 
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