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Re: Ford's auto stop start [Re: askani79705] #4993455
01/28/19 11:33 AM
01/28/19 11:33 AM
Joined: Apr 2012
Posts: 2,853
West Michigan
buck91 Offline OP
buck91  Offline OP

Joined: Apr 2012
Posts: 2,853
West Michigan
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 11:34 AM
01/28/19 11:34 AM
Joined: Aug 2008
Posts: 25,014
ON, Canada eh?
StevieC Offline
StevieC  Offline

Joined: Aug 2008
Posts: 25,014
ON, Canada eh?
Thanks Buck, that's great information. thumbsup


'18 Caravan - 36k 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 01:49 PM
01/28/19 01:49 PM
Joined: Jun 2006
Posts: 468
midland tx
askani79705 Online content
askani79705  Online Content

Joined: Jun 2006
Posts: 468
midland tx
It's Trailer Control Module, you're pulling the power. It does work. Plug it in when towing.


2017 Ford F150 NAPA syn 5w30 Fram 11955.
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 07:04 PM
01/29/19 07:04 PM
Joined: Nov 2004
Posts: 1,034
Mississippi
ddrumman2004 Offline
ddrumman2004  Offline

Joined: Nov 2004
Posts: 1,034
Mississippi
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 07:28 PM
01/29/19 07:28 PM
Joined: Jun 2005
Posts: 12,827
Santa Barbara, CA
bdcardinal Online content
bdcardinal  Online Content

Joined: Jun 2005
Posts: 12,827
Santa Barbara, CA
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
1995 Ford Mustang GT

Ford/Mazda Parts Counter
NRA Benefactor Member
Opinions expressed are my own.
Re: Ford's auto stop start [Re: bdcardinal] #4995076
01/29/19 08:40 PM
01/29/19 08:40 PM
Joined: Apr 2009
Posts: 1,307
oh
roadrunner1 Offline
roadrunner1  Offline

Joined: Apr 2009
Posts: 1,307
oh
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
01/30/19 12:05 AM
01/30/19 12:05 AM
Joined: Jul 2014
Posts: 637
Wisconsin
Srt20 Offline
Srt20  Offline

Joined: Jul 2014
Posts: 637
Wisconsin
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 07:50 AM
02/01/19 07:50 AM
Joined: Dec 2017
Posts: 2,338
CO
JLTD Offline
JLTD  Offline

Joined: Dec 2017
Posts: 2,338
CO
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 oil viscosity.

Using AMSOIL

Hers: 2008 Jeep Liberty 149k, SS5w30/Amsoil

His: 2015 4Runner 55k, SS 5w20/Amsoil

Re: Ford's auto stop start [Re: buck91] #4997907
02/01/19 08:03 AM
02/01/19 08:03 AM
Joined: Dec 2017
Posts: 2,338
CO
JLTD Offline
JLTD  Offline

Joined: Dec 2017
Posts: 2,338
CO
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 oil viscosity.

Using AMSOIL

Hers: 2008 Jeep Liberty 149k, SS5w30/Amsoil

His: 2015 4Runner 55k, SS 5w20/Amsoil

Re: Ford's auto stop start [Re: JLTD] #4997910
02/01/19 08:08 AM
02/01/19 08:08 AM
Joined: Dec 2011
Posts: 6,348
North Carolina
rooflessVW Offline
rooflessVW  Offline

Joined: Dec 2011
Posts: 6,348
North Carolina
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 11:15 AM
02/01/19 11:15 AM
Joined: Sep 2002
Posts: 4,486
Lakeville, MN
MNgopher Offline
MNgopher  Offline

Joined: Sep 2002
Posts: 4,486
Lakeville, MN
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 11:29 AM
02/01/19 11:29 AM
Joined: Feb 2007
Posts: 3,962
Southeast
meep Offline
meep  Offline

Joined: Feb 2007
Posts: 3,962
Southeast
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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