No electric mode once engine is warmed (Powerboost)

[Davexxxx]

Sooo, how could they not reproduce the problem?

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[HammaMan]

Because they didn't try.

Yea I'm going to contact the dealer just so they're tracking. I'm sure this is a one-off issue but that wire was hanging near a couple metal contact points.

This also explains my rough shifts from electric to hybrid mode when at lower speeds as the internal motor was having to do the start instead of the starter motor.

what's your vin

 

[Davexxxx]

And lied about it.

 

[rado]

And lied about it.

To their credit, I did see the truck was being driven through my Ford pass, but the service advisor did state that there's no codes being thrown and the techs don't fully understand how it's "supposed" to behave. Seems like the dealers now only know how to fix modern vehicles when the vehicles tell them what's wrong ?.

 

[Snakebitten]

UPDATE:
Brought the truck to the dealer where they tried diagnosing the problem for 2 weeks. They said they could not reproduce the issue (which is difficult to believe as this issue had happened on every single drive), and to continue driving it and see if it goes away. Well, I was doing the first oil change early today and while backing out from under the truck, a little glint caught my attention. I rolled back under and saw this little wire just hanging from a wire harness. I took a closer look, and realized that this wire looks like it goes to the Starter Motors middle terminal (as there was no wire connected to it, it was the exact length needed, and was the right size terminal) and decided to bolt it on and see what happens. Turns out, it fixed the problem!

Somehow the other starter (generator) was doing all the engine starting. I find it very odd that there was no DTC being thrown when the truck realized the external starter was not working, but nonetheless, I'm glad I got this issue fixed. Not sure how this passed the build plants QC, but I'm guessing the somewhat redundant starters on the Powerboost were able to hide the faulty (or incorrectly wired) starter motor.

I owe you an apology that you wouldn't even know of the offense.

I was sceptical enough about what you described that I just chalked it up to a new owner misinterpreting what they were experiencing. It just didn't add up to me.

Your discovery of the bendix starter not even being connected from the factory is a bizarre enough situation that at least I can accept the uniqueness of the truck compared to any thread I have ever come across here. And it's even more interesting since the truck is a 2024, therefore not equipped with the belt integrated starter as an alternative to a 12V high amperage starting option.

I'm amazed the Powerboost programming could or would accommodate 2 of the 3 starting options being unavailable. Especially without triggering any codes or alerts.

Ford definitely rewrote the code on a 2024 Powerboost. Amazing.

 

[Davexxxx]

To their credit, I did see the truck was being driven through my Ford pass, but the service advisor did state that there's no codes being thrown and the techs don't fully understand how it's "supposed" to behave. Seems like the dealers now only know how to fix modern vehicles when the vehicles tell them what's wrong ?.


1FTFW3LD2RFB74526

Good news that they didn't lie. Great even.

Not good news, how they don't know how one of their premier vehicles, is supposed to perform in normal operation, or that you had to find a critical wire that was never connected.

In either case, glad you have your truck, as it is supposed to be. You'll love it.

 

[HammaMan]

That's funny, on the 17th they read in PTS precisely how it's supposed to behave

Reading and comprehending are 2 separate things though. ?‍

@Snakebitten the truck has 1600 miles on it too!? Not sure how it's gone this long just as happy as could be sans hybrid mode, and of course, not having its starter.

I could see an OBISG truck going a very long time w/ the bendix disconnected, but a 24+?

I really don't know what to say to all of this -- certainly didn't expect to see 1600 miles on the odometer, no codes, and the only issue being lack of hybrid functionality. Really calls into question why more couldn't be done in creating 'failsafe' modes instead of panic/SSN issues.

 

[rado]

That's funny, on the 17th they read in PTS precisely how it's supposed to behave

Reading and comprehending are 2 separate things though. ?‍

@Snakebitten the truck has 1600 miles on it too!? Not sure how it's gone this long just as happy as could be sans hybrid mode, and of course, not having its starter.

I could see an OBISG truck going a very long time w/ the bendix disconnected, but a 24+?

I really don't know what to say to all of this -- certainly didn't expect to see 1600 miles on the odometer, no codes, and the only issue being lack of hybrid functionality. Really calls into question why more couldn't be done in creating 'failsafe' modes instead of panic/SSN issues.

Yea i knew something was off the day after I purchased it (as I had a 21 PB before and knew how it behaved) but figured maybe they changed something in the 24s with the removal of the BISG and gave it 1k miles to "learn". I scheduled an appointment at 1k miles and by the time I brought it in was at 1500+.

Funny thing is, the service advisor said the next step would be to bring Ford engineers in to try and replicate the issue if I was still having the same problem. Would love to be there when they found the starter motor wire disconnected.

 

[Goldeneye36]

I'm both disappointed and impressed. Crazy that something as important as the flywheel starter not being connected was missed at the factory but also impressed that the PB programming was just like "whatever, I'll make it work"

It's becoming more apparent to me that the PowerBoost trucks have a lot of clever engineering and programming in their design and execution. It does however seem that it's taking awhile for the technicians to catch up in their understanding of these trucks.

 

[HammaMan]

What I find odd about it is that the truck knew the starter wasn't responding which is how it knew to not go into hybrid drive mode. How did that not throw a code!?! And yes, they did connect to the truck not just relying on PTS data. What'd they do to the logic that it could know the starter wasn't usable, but not throw a DTC?

These are the only codes reported

 

[rado]

What I find odd about it is that the truck knew the starter wasn't responding which is how it knew to not go into hybrid drive mode. How did that not throw a code!?! And yes, they did connect to the truck not just relying on PTS data. What'd they do to the logic that it could know the starter wasn't usable, but not throw a DTC?

These are the only codes reported

Yea those were from me replacing the speakers with an aftermarket setup ?. Only code now is some new TCU code after the OTA update.

I checked before bringing it in with forscan and there was never any DTC for anything related to the powertrain. Engineers probably just figured all things would be installed correctly and build out the error codes from there ?

 

[Snakebitten]

It's ironic that Ford would disable a Powerboost if the BIS wasn't functioning.

Yet they accommodate no BIS or Bendix starter.

 

[HammaMan]

I need to test that with the latest software. See what happens to one of our trucks w/ it unplugged. Does the bendix get used or does it freak out.

Cuz if the truck freaks out w/ the BIS missing, but his bendix could literally be disconnected and still be 'limping' around, I'll.... I'lll ... nothing. Every time I say nothing surprises me, something comes along and redefines not being surprised. I could be standing on my 'not surprised' and suddenly there's a shovel undercutting it.

 

[Snakebitten]

'll.... I'lll ... nothing.

Awe come on. Finish the sentence(s) ?

You know what I wish?
I wish there was some way to have my 2022 run similar ICE-Crank code of the 2024, even with the BIS still onboard.

Or better yet, edit the existing code on my truck NOT to be disabled if the BIS isn't functioning properly. I don't mind having the BIS, but the 2024 pretty much proves that the BIS doesn't HAVE to be a failure point.

 

[dochawk]

Wow, that could have been much worse. They left a loose hot wire with no fuse just flopping about?

Roll back the calendar to the mid '80s.

I'm driving a '72 Impala 400.

We took it to my father's mechanic for something or other; I forget what.

I picked up a couple of friends for a movie, and gunned it once on the freeway to get to speed.

What we would later realize is that the idiots working for my father's mechanic left a dangling +12 wire! Under hard acceleration, it contacted a ground.

With a 400 cube engine under heavy throttle.

The lights dimmed, the engine sagged, and

**BWAMMM**

The last 13 inches of tailpipe blown clean off.

We only noticed the freeway offramp at the last moment (not are normal part of town). Braked hard.

**BWAMMM**

This time, the muffler blew at the seams, and was spun about 15 degrees.

We hadn't fixed it yet before we took it to San Diego.

It should have backfired again when I gunned it to go up the hill on Texas street, but there was nothing to contain the explosion.

A man got out of the ambulance behind me, came up to the window, and asked, "Excuse me, sir, did you know that your car's on fire?"

"What???"

"Don't worry; it's only a little fire."

By then it had burned out, leaving soot on the bumper.

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