PB using traditional starter more and more...

[mxwrk]

I feel pretty confident that if your truck was suffering even the slightest failure of a fundamental component, you'd be getting codes.
That doesn't necessarily mean that it's easy to troubleshoot an issue, but the shear number of parameters under constant monitoring on these trucks is daunting.

I am curious how you are discerning so clearly between the bendix vs the BISG. At least from inside the cabin while driving. I ask because my truck starts so quickly with either method that it's tough to discern.

This is only during initial startup, not during start/stop driving. It’s easy to hear the cranking sound of the traditional starter motor right after I push to start. In comparison, for the last 2 years it would start in electric mode and then BISG over to ICE.

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[tbinmd]

Maybe pull the SOC of the HV battery, if it's low that would explain it. But there's other parameters used to determine which is used.

 

[tbinmd]

And here's something snake posted sometime ago. of course Ford could have changed programming.

https://www.f150gen14.com/forum/threads/powerboost-rough-charging-idle.4912/page-2#post-80989

 

[Snakebitten]

Yeah, I didn't realize that you meant for coldstarts.
I believe Ford does use the bendix starter for coldstarts. Of course if your HV battery SOC is sufficient, and there's no immediate parameter demanding ICE, I suppose it's possible the first time the ICE act starts is after the vehicle is underway. I don't know exactly which starter with those circumstances will be used.

In warmer temps, I can make it a 1/4 mile before I hit the accelerator with enough torque demand to require ICE. But as I described above, I'm in the cabin and have enough audio going on that I can't discern the starter.

 

[mxwrk]

Yeah, I didn't realize that you meant for coldstarts.
I believe Ford does use the bendix starter for coldstarts. Of course if your HV battery SOC is sufficient, and there's no immediate parameter demanding ICE, I suppose it's possible the first time the ICE act starts is after the vehicle is underway. I don't know exactly which starter with those circumstances will be used.

In warmer temps, I can make it a 1/4 mile before I hit the accelerator with enough torque demand to require ICE. But as I described above, I'm in the cabin and have enough audio going on that I can't discern the starter.

Yeah, to me its behaving like the HV battery doesn't have the SOC to start it up. It's just odd that its acted one way for so long and has now changed. Oh well...still runs

 

[HammaMan]

Yeah, to me its behaving like the HV battery doesn't have the SOC to start it up. It's just odd that its acted one way for so long and has now changed. Oh well...still runs

The only time my flywheel starter has engaged was when the 12v SOC was low so it could be indicative that your truck thinks something is wrong with your 12v batt/s. Don't rule out the aux batt as well. It could also be your parking / shutdown routine. If you're spending a few minutes getting out, the truck will use the HVB to generate 12v until it hits its low limit. If it's hot when you park and right at its limit, overnight when it cools down you can lose a few %.

You can test the low HVB SOC by parking and hitting the gas pedal to turn on the ICE. It will then charge up the HVB and shut off the ICE when its "full".

 

[mxwrk]

The only time my flywheel starter has engaged was when the 12v SOC was low so it could be indicative that your truck thinks something is wrong with your 12v batt/s

I just threw my charger on to see if that’ll help

 

[HammaMan]

I just threw my charger on to see if that’ll help

Updated post w/ a HVB SOC test method. Granted if you're charging the batt right now, and it works, then you'll have another data point.

 

[skiteton]

Mine has been occasionally cold starting straight to the ICE for about a month. Seems to coincide with a popping sound coming from the speakers after I shut the truck off. I can hear the popping outside of the vehicle with the windows up. When I've heard the popping, I have started the truck again, moved it, turned it off, and the popping continues after shutdown. The next time I start the truck (usually ~8-10 hours later), it will start straight to ICE and no electric mode until a few miles. This happens about 3 times a week.

 

[Samson16]

Drive it in Tow/Haul for a week.

 

[22redrocket]

I don’t think I’ve ever heard a traditional starter on my 22 PB with 16k miles. Always just fires up silently from the electric mode. I was under the impression these did t even have a traditional starter, just by the fact I’ve never heard one.

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