FSA 21B10 - Cam phaser update?

[Donny Rod]

I am pleased to hear that it shouldn't affect power.

I don't pretend to know everything. I do try to link concepts together and figure shit out if I can, with the knowledge that I may not have the full picture. Valve timing affects power. Cam phasers affect valve timing. It seemed a strong possibility. But I'm happy to learn and be wrong today.

I am happy to say, you are NOT incorrect.

I've compared the stock flash, to the after flash.

There are TCM adjustments in that flash as well. Good job on your guess!

Power is affected a bit. Mostly on low load, in higher RPMs.

 

[84 Sheepdog]

since cam phasers seem to be issue only at start up maybe valve timing at cold start up? I like you like to have an understanding and figure it out also!

I was thinking the same thing. If these usually fail at start up then maybe reducing the operation of the auto stop/start as well?

 

[FordTechOne]

since cam phasers seem to be issue only at start up maybe valve timing at cold start up? I like you like to have an understanding and figure it out also!

The noise is unrelated to cold start valve timing. When the engine is started, the phaser is supposed to be locked at base timing until it is activated by oil pressure from the solenoid. If the phaser failed to lock after the previous shutdown, it will oscillate momentarily until it receives oil pressure. This is why the noise occurs only after a cold soak, on warm starts there is residual oil in the phaser cavities.

 

[Muchmore]

The noise is unrelated to cold start valve timing. When the engine is started, the phaser is supposed to be locked at base timing until it is activated by oil pressure from the solenoid. If the phaser failed to lock after the previous shutdown, it will oscillate momentarily until it receives oil pressure. This is why the noise occurs only after a cold soak, on warm starts there is residual oil in the phaser cavities.

Out of curiosity what is the software update made if no noise is present? Something like an extended crank time to give oil pressure a chance to build up more before firing off (SWAG method).

Silly wild ass guess

 

[Donny Rod]

Guys have reported extended cranking time after the update as well.

You can also force this yourself, by HOLDING DOWN THE GAS PEDAL WHILE STARTING. This will crank the engine without starting, which helps to build oil pressure.

 

[Sonicsunspot]

This is all suddenly very weird for me...

my truck was in for phaser work in late January. Since I got it back runs like a top, but it seems to crank at least twice as long. Plus my auto start/stop has not engaged once since I got the truck back. I thought it was time for a new battery.

Maybe I am an early adopter test patient (Guiana pig)???

 

[JefferyGT]

Ah yes... The fabled Guiana Pig beta.
We thank you for your sacrifice.

Can Ford push out updates automatically without notice?

I have noticed an increase in starting time to ignition as well. now going on for nine days. My truck has not been physically in for service since two months ago.

 

[snt505]

Ah yes... The fabled Guiana Pig beta.
We thank you for your sacrifice.

Can Ford push out updates automatically without notice?

I have noticed an increase in starting time to ignition as well. now going on for nine days. My truck has not been physically in for service since two months ago.

What value would Ford have in pushing out in beta with no ability to analyze the outcome? Unless you think the outcome is "hope he doesn't come back" which wouldn't make sense for the intermediate party (dealer) if the "beta" was somehow detrimental.

 

[JefferyGT]

What value would Ford have in pushing out in beta with no ability to analyze the outcome? Unless you think the outcome is "hope he doesn't come back" which wouldn't make sense for the intermediate party (dealer) if the "beta" was somehow detrimental.

Zero.
You misunderstood my quoting a previous post.

Pushing a beta would be stupid AF

 

[FordTechOne]

Out of curiosity what is the software update made if no noise is present? Something like an extended crank time to give oil pressure a chance to build up more before firing off (SWAG method).

Silly wild ass guess

Perhaps, but not likely. My guess is it will involve changes in cam timing parameters on engine shutdown to ensure the phasers lock in position.