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Re: Ford's auto stop start [Re: askani79705] #4993455 01/28/19 10:33 AM
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buck91 Offline OP
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Originally Posted by askani79705
[Linked Image]

[Linked Image]



Is it really that easy? This isn’t the BOO wire, just a signal wire for the stop start?


2011 F150 4x4 5.0L
1996 Mustang GT 5spd/ragtop
Re: Ford's auto stop start [Re: buck91] #4993456 01/28/19 10:34 AM
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Thanks Buck, that's great information. thumbsup


'18 Caravan - 45k KM - AMSOIL SS 0w20, Fram Ultra, TC-W3 500:1
'06 Santa Fe - 535k KM (Retired)

There is no such thing as "lifetime" fluids! mad
Re: Ford's auto stop start [Re: buck91] #4993618 01/28/19 12:49 PM
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askani79705 Offline
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It's Trailer Control Module, you're pulling the power. It does work. Plug it in when towing.


2019 Ford F150 NAPA syn 5w20 Motorcraft Filter
2000 Chevy 2500 Silverado NAPA conv 5w30 AC Delco Filter
2012 Impala Pennzoil Ultra 10w30 AC Delco Filter
Re: Ford's auto stop start [Re: MNgopher] #4994949 01/29/19 06:04 PM
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It's almost unnoticeable in my 2018 STX. I can hear the statrter spin when first starting the truck after stopping, but can't hear it when auto-stop -start is engaged. Just seems like the engine just starts.


2018 Ford F 150 Extended Cab STX with 2.7 Ecoboost
2012 Mustang convertible V6 auto.
1993 Honda Golding trike
Re: Ford's auto stop start [Re: ddrumman2004] #4994978 01/29/19 06:28 PM
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bdcardinal Offline
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Originally Posted by ddrumman2004
It's almost unnoticeable in my 2018 STX. I can hear the statrter spin when first starting the truck after stopping, but can't hear it when auto-stop -start is engaged. Just seems like the engine just starts.


I am like 90% sure the 2.7 uses the alternator to fire off the engine during stop-start instead of the starter. Kinda like how the hybrids don't have a starter.


2014 Ford Mustang GT Track Pack
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Opinions expressed are my own.
Re: Ford's auto stop start [Re: bdcardinal] #4995076 01/29/19 07:40 PM
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roadrunner1 Offline
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Originally Posted by bdcardinal
Originally Posted by ddrumman2004
It's almost unnoticeable in my 2018 STX. I can hear the statrter spin when first starting the truck after stopping, but can't hear it when auto-stop -start is engaged. Just seems like the engine just starts.


I am like 90% sure the 2.7 uses the alternator to fire off the engine during stop-start instead of the starter. Kinda like how the hybrids don't have a starter.

I can remember reading this somewhere before I bought my wife the F150 with the 2.7, but I cannot find any information on it now.

The Ford start/stop is so seamless I really can't find any reason for anyone to complain.


'15 F350 6.7
Re: Ford's auto stop start [Re: roadrunner1] #4995230 01/29/19 11:05 PM
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Srt20 Offline
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Originally Posted by roadrunner1
The 2.7 Ford auto start/stop doesn't use the starter motor for restarts, it uses the alternator to nudge the engine. When it stops it leaves a piston at just before TDC, hence the "nudge".
I own a '16 2.7 F150, the power it produces is almost amazing.

Is that just for the 2.7? Or the 3.5 as well?

This is the first I have heard of this for the F-150's. Do you have a link to this somewhere? Thanks!

Re: Ford's auto stop start [Re: buck91] #4997888 02/01/19 06:50 AM
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JLTD Offline
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Thought this study was interesting:

http://www.ipd.anl.gov/anlpubs/2015/05/115925.pdf

Basically, over 20 start events per day is bad, under 5 no effect on longevity, and in between a gradual worsening the more starts/day.


I use the overseas manual to choose my viscosity.

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Re: Ford's auto stop start [Re: buck91] #4997907 02/01/19 07:03 AM
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JLTD Offline
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And after doing plenty of reading the last few days and especially after seeing a lot of "starter and battery wear" and "heavier duty statter and battery", I say the bump start is crrap. You can't start an engine with the alternator.


I use the overseas manual to choose my viscosity.

Using AMSOIL

Hers: 2008 Jeep Liberty 154k, SS 5w30/Amsoil

His: 2015 4Runner 60k, SS 5w20/Amsoil

Re: Ford's auto stop start [Re: JLTD] #4997910 02/01/19 07:08 AM
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rooflessVW Online Content
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Originally Posted by JLTD
You can't start an engine with the alternator.

Why can't you?

Seems like the logical solution, honestly - ditch the separate starter altogether.


"Zed's dead baby, Zed's dead."
Re: Ford's auto stop start [Re: JLTD] #4998180 02/01/19 10:15 AM
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MNgopher Offline
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Originally Posted by JLTD
Thought this study was interesting:

http://www.ipd.anl.gov/anlpubs/2015/05/115925.pdf

Basically, over 20 start events per day is bad, under 5 no effect on longevity, and in between a gradual worsening the more starts/day.


Note however that the study was focused on Non Start Stop vehicles - ie: the start events were your traditional key off key on type starts.

Re: Ford's auto stop start [Re: buck91] #4998196 02/01/19 10:29 AM
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meep Offline
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so the main thing I'd look at would be what happens to the oil film between the rings and cyl walls during the 45 seconds or less stop. If the film breaks and the ring metal physically rests on the cyl wall, then there will be an infinitesimally small moment where the metal-to-metal contact rubs as it breaks free and then onto supporting oil film. Over years, that would begin to add up. This, of course, might be mitigated by material and finishing choices to where it's not significant over the life of the engine. So again, it comes down to design, and unless we see what their engineers assessed and designed to, it's all guesswork.


2018 F150
2015 crv (wifey!)
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