FSA 21B10 - Cam phaser update?

[RaptorFun]

@Topher …you should be fine. All 2020 Raptors produced after 11/19 have the updated phasers and latest software calibration.

 

[dmarkh]

Tough to determine without standing by your Raptor on cold startup and driving it to identify the stutter. I’d recommend you perform a search on this forum for both concerns. There’s a boatload of sound clips here of the dreaded cam phaser knock/tic.

 

[dmarkh]

OK, I found a few. They all sound pretty much the same. Multiple knocks. All were more than one. I think my single knock is louder and maybe a little later in the start process but sounds similar. It only happens on cold start and not every day.

 

[FordTechOne]

My 04/19 2019 Raptor had the 4 VCT cam phaser thingamajig done alone with 21B10 update due to a metallic light tapping/rattle for a minute or so each time I started the truck. It didn't sound like valvetrain or anything weird, good oil pressure, etc. Anyway, dealer said cam phasers and truck basically sounds the same after the "fix". Maybe tapping is a bit lighter and not as long. It was pretty minor beforehand and it's still minor, so I'm not going to worry about it. The dealer tech didn't screw anything else up and I got truck back with fresh oil/filter and a fixed squeaky sunroof fabric shade when it opened and closed.

Luckily, I have the Flood Ford factory warranty extension for 8yr/125k miles so if it blows up before that, not my problem, if it doesn't I'll trade truck before extended warranty expiration. Overall, still love the truck.

It sounds like you’re hearing the high pressure fuel pump (HPFP) which is a normal tick noise.

The best advice I can give to everyone is stop trying to listen for noises. Engines are mechanical devices; if you listen closely you’ll hear all kinds of various noises, especially on a cold start when the PCM is going through its catalyst light off strategy and adjusting ignition timing, cam timing, fuel system mode, etc. You may also hear noises from normal valvetrain operation, solenoids activating/deactivating, turbo wastegates cycling, the fuel system transitioning between PFI and DI, HPFP tick, etc.

A cam phaser rattle is a distinct clatter type noise that occurs on a cold start for 2-5 seconds and can be heard both inside and outside the vehicle. It’s not something you have to listen for. If you’re not experiencing that noise then the phasers are operating properly.

 

[RaptorVette]

I got my truck back on Monday after they did the reprogram and so far the ticking is gone.

 

[Flash1034]

It sounds like you’re hearing the high pressure fuel pump (HPFP) which is a normal tick noise.

The best advice I can give to everyone is stop trying to listen for noises. Engines are mechanical devices; if you listen closely you’ll hear all kinds of various noises, especially on a cold start when the PCM is going through its catalyst light off strategy and adjusting ignition timing, cam timing, fuel system mode, etc. You may also hear noises from normal valvetrain operation, solenoids activating/deactivating, turbo wastegates cycling, the fuel system transitioning between PFI and DI, HPFP tick, etc.

A cam phaser rattle is a distinct clatter type noise that occurs on a cold start for 2-5 seconds and can be heard both inside and outside the vehicle. It’s not something you have to listen for. If you’re not experiencing that noise then the phasers are operating properly.

Fordtechon, is there any downside to getting the ECM update?

 

[quikag]

It sounds like you’re hearing the high pressure fuel pump (HPFP) which is a normal tick noise.

The best advice I can give to everyone is stop trying to listen for noises. Engines are mechanical devices; if you listen closely you’ll hear all kinds of various noises, especially on a cold start when the PCM is going through its catalyst light off strategy and adjusting ignition timing, cam timing, fuel system mode, etc. You may also hear noises from normal valvetrain operation, solenoids activating/deactivating, turbo wastegates cycling, the fuel system transitioning between PFI and DI, HPFP tick, etc.

A cam phaser rattle is a distinct clatter type noise that occurs on a cold start for 2-5 seconds and can be heard both inside and outside the vehicle. It’s not something you have to listen for. If you’re not experiencing that noise then the phasers are operating properly.

I agree with you, that was why I was surprised they did the cam phaser repair on my truck. I thought it might be wastegate rattle or a normal noise, so when they diagnosed bad phasers and did the whole deal, it caught me off-guard. I certainly didn't have a loud clatter for a few seconds on cold or warm start.

Anyway, truck seems fine and I do have the new software updates, etc. so maybe they fixed a future cam phaser issue I would have had otherwise. haha.

Thanks for your continued contributions to our forum, FordTechOne!!

 

[jeanco]

in recall section a new one is out: 21B10S2
bringing truck next week for change of oil,be asking to the guy i know there.

 

[dmarkh]

in recall section a new one is out: 21B10S2
bringing truck next week for change of oil,be asking to the guy i know there.

So what is the difference between 21B10 and 21B10S2?

 

[Oldfart]

So what is the difference between 21B10 and 21B10S2?

The second one has an "S2" added to it.