Auto start stop technology
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Tuned
Joined: Oct 2004
Posts: 442
Likes: 7
From: reno nevada
Auto start stop technology
In the process of ordering a new truck.
The auto start stop on the engine sounds really stupid to me. How does that actually work? I appreciate any input if the gang likes this or not.
Thanks Joe
The auto start stop on the engine sounds really stupid to me. How does that actually work? I appreciate any input if the gang likes this or not.
Thanks Joe
Tuned
Joined: Jun 2018
Posts: 378
Likes: 134
My truck only has 1200 miles but the auto start stop very rarely does anything. And if it you don't want it to work all you have to do is run in sport mode or tow or hit the off button. I don't care for the technology but it's easily ignored. The truck seems to look for an excuse to not turn off. Outside temp. Inside temp. Battery draw, battery state, being parked on a grade, having the wheel turned, learning the current fuel grade and trims.....all have popped up on mine as reasons why it stays running.
As a matter of fact my Brother in law has ridden probably 200 miles with me and has yet to see the truck stop. I tried for two days stopping many many times to show him how it worked and the truck always found a reason not to.
It works by shutting down at the red-light or anywhere else you come to a stop. As soon as you lift off the brake it starts back up. Or if your cab gets too far from the set temp it will also go ahead and start.
As a matter of fact my Brother in law has ridden probably 200 miles with me and has yet to see the truck stop. I tried for two days stopping many many times to show him how it worked and the truck always found a reason not to.
It works by shutting down at the red-light or anywhere else you come to a stop. As soon as you lift off the brake it starts back up. Or if your cab gets too far from the set temp it will also go ahead and start.
Lead Driver
Joined: Dec 2016
Posts: 5,650
Likes: 243
From: GA
When you lift your foot off the brake pedal, the engine will automatically start up again. It’s a very quick starting process so no worries about lag time .
If you don’t like this feature, there’s a button on the dash that can be pressed to disable this feature but you will have to hit it every time you actually turn the vehicle off.
Tuned
Joined: Jun 2018
Posts: 378
Likes: 134
It's probably easier to just stay in sport mode. When you start the 21 it asks if you want to continue in sport mode. You can hit ok on the steering wheel.
Otherwise the button is over the infotainment screen.
It is far less intrusive than I had it imagined. Lol . With my dual exhaust it's more pronounced though.
Otherwise the button is over the infotainment screen.
It is far less intrusive than I had it imagined. Lol . With my dual exhaust it's more pronounced though.
Super Moderator
Joined: Apr 2004
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There is a video about stop-start where the guy figures out the gas savings based on idle time use vs. startup fuel. He's using a 4 cylinder Chevy. I can't find his video.
Anyway,his results were such that he figured you had to be stopped at least 7 seconds to save enough fuel to make it worthwhile.
In my "testing", I have found that a 7 or 10 second stop is fairly rare in the driving I do, and that auto stop/start will drive you nuts in stop and go traffic with no benefit.
I do not think the system in my '17 is terribly aggressive, but I do shut it off and activate it only when I know I'm stuck a good long time.
I have ridden in a Range Rover Evoque and that system is much more aggressive than the Ford, and I couldn't see an easy way to disable it.
Mazda and Subaru also make it hard to disable.
This guy pronounces it "BS", asserting that it's value is only to the automaker for CAFE MPG purposes. That said, he only half condemns it from a reliability or engine wear standpoint. This is long and
LANGUAGE WARNING--LONG FORM "BS":
Anyway,his results were such that he figured you had to be stopped at least 7 seconds to save enough fuel to make it worthwhile.
In my "testing", I have found that a 7 or 10 second stop is fairly rare in the driving I do, and that auto stop/start will drive you nuts in stop and go traffic with no benefit.
I do not think the system in my '17 is terribly aggressive, but I do shut it off and activate it only when I know I'm stuck a good long time.
I have ridden in a Range Rover Evoque and that system is much more aggressive than the Ford, and I couldn't see an easy way to disable it.
Mazda and Subaru also make it hard to disable.
This guy pronounces it "BS", asserting that it's value is only to the automaker for CAFE MPG purposes. That said, he only half condemns it from a reliability or engine wear standpoint. This is long and
LANGUAGE WARNING--LONG FORM "BS":
Lead Driver
Joined: Jun 2005
Posts: 8,471
Likes: 727
From: Calgary Canada
Lots of people disable it, lots of people don't. I say, drive the truck a few months before you decide, you may figure out that it's no big deal for you at all.
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Mountain Pass
Joined: Nov 2005
Posts: 244
Likes: 2
I understand what’s behind this technology do you try anything to get the gas mileage up but it’s something I didn’t one on my truck. I went to autostopeliminator.com and bought their wiring harness connector for 89 bucks and put it in my 2021 lariat. This automatically prevents the engine from stopping like you’ve pushed the button every time.
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Thread Starter
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Tuned
Joined: Oct 2004
Posts: 442
Likes: 7
From: reno nevada
I appreciate the input from the gang. I should be able to live with this since it can be shut off by the button. Or look at deleting it down the road. Assuming Ford actually can produce the truck I just ordered. I’m learning here everyday.
Been a member of the site for a long time on the 7.3 forum . Some looser totaled my truck so it’s a new F150
for me.
Been a member of the site for a long time on the 7.3 forum . Some looser totaled my truck so it’s a new F150
for me.
Tuned
Joined: Jun 2018
Posts: 378
Likes: 134
Both are disabled in sport mode. Just hit ok on the steering wheel each time you start up.
I own a shop and firmly believe that cylinder deactivation is highly over stated as an issue. Since 05 GM used it and very rarely had any issue. Called it DOD for a few years. Then afm. Especially inside of 150k miles. I can find a ton of them in Yukon envoy etc etc with 300k on the factory engine. Ford guys forget that around that time Ford v8 and v10 had been puking out spark plugs and ruining coils for several years. Not to mention the disaster that was the 5.4 triton. Where are all the 5.4 triton with 300k on the factory engine......
ID choose not to have the fuel management but it didn't scare me away .
Keep oil changed 99% of the issues go away. GM used a stupid screen design for a few years early on. But even then clean oil wouldn't clog it. Ill use mobil 1. 3k miles per oil change . I use it at 5k intervals in my mach 1. And 10k intervals in the Toyota. 180k miles with no issues but I believe different engines have different needs.
I own a shop and firmly believe that cylinder deactivation is highly over stated as an issue. Since 05 GM used it and very rarely had any issue. Called it DOD for a few years. Then afm. Especially inside of 150k miles. I can find a ton of them in Yukon envoy etc etc with 300k on the factory engine. Ford guys forget that around that time Ford v8 and v10 had been puking out spark plugs and ruining coils for several years. Not to mention the disaster that was the 5.4 triton. Where are all the 5.4 triton with 300k on the factory engine......
ID choose not to have the fuel management but it didn't scare me away .
Keep oil changed 99% of the issues go away. GM used a stupid screen design for a few years early on. But even then clean oil wouldn't clog it. Ill use mobil 1. 3k miles per oil change . I use it at 5k intervals in my mach 1. And 10k intervals in the Toyota. 180k miles with no issues but I believe different engines have different needs.
Thread Starter
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Tuned
Joined: Oct 2004
Posts: 442
Likes: 7
From: reno nevada
Both are disabled in sport mode. Just hit ok on the steering wheel each time you start up.
I own a shop and firmly believe that cylinder deactivation is highly over stated as an issue. Since 05 GM used it and very rarely had any issue. Called it DOD for a few years. Then afm. Especially inside of 150k miles. I can find a ton of them in Yukon envoy etc etc with 300k on the factory engine. Ford guys forget that around that time Ford v8 and v10 had been puking out spark plugs and ruining coils for several years. Not to mention the disaster that was the 5.4 triton. Where are all the 5.4 triton with 300k on the factory engine......
ID choose not to have the fuel management but it didn't scare me away .
Keep oil changed 99% of the issues go away. GM used a stupid screen design for a few years early on. But even then clean oil wouldn't clog it. Ill use mobil 1. 3k miles per oil change . I use it at 5k intervals in my mach 1. And 10k intervals in the Toyota. 180k miles with no issues but I believe different engines have different needs.
I own a shop and firmly believe that cylinder deactivation is highly over stated as an issue. Since 05 GM used it and very rarely had any issue. Called it DOD for a few years. Then afm. Especially inside of 150k miles. I can find a ton of them in Yukon envoy etc etc with 300k on the factory engine. Ford guys forget that around that time Ford v8 and v10 had been puking out spark plugs and ruining coils for several years. Not to mention the disaster that was the 5.4 triton. Where are all the 5.4 triton with 300k on the factory engine......
ID choose not to have the fuel management but it didn't scare me away .
Keep oil changed 99% of the issues go away. GM used a stupid screen design for a few years early on. But even then clean oil wouldn't clog it. Ill use mobil 1. 3k miles per oil change . I use it at 5k intervals in my mach 1. And 10k intervals in the Toyota. 180k miles with no issues but I believe different engines have different needs.
Super Moderator
Joined: Aug 2003
Posts: 25,479
Likes: 742
From: Isanti, MN
None of my F150s had the auto start/stop, but I've never understood why people are opposed to the idea. I can't stand an idling engine...it's wasting gas that could be used to get me down the road. My Subaru has a similar start/stop feature that I've never disabled.
It seems like the main concern people have is the increased wear on the starter. But it's important to remember that the starters and flywheels used for engines with this feature are specifically designed to handle the increased load. They've been used for 6 years now in the F150, and I've not heard of one failing. I'm sure it's happened, but it's far from a common problem. I think this is like worrying about wearing out your transmission because it shifts, or your pistons wearing out because they're moving up and down so fast. They're designed for the task, so it's not worth worrying about.
It seems like the main concern people have is the increased wear on the starter. But it's important to remember that the starters and flywheels used for engines with this feature are specifically designed to handle the increased load. They've been used for 6 years now in the F150, and I've not heard of one failing. I'm sure it's happened, but it's far from a common problem. I think this is like worrying about wearing out your transmission because it shifts, or your pistons wearing out because they're moving up and down so fast. They're designed for the task, so it's not worth worrying about.
Believe Nothing
Joined: Jun 2004
Posts: 7,516
Likes: 401
From: W. Central FL.
Well, as an old timer's reaction, if an engine stopped for any unexpected reason the response was to restart it immediately. I've had this F150 with AS feature and disable it when I think of it. But then I don't experience that happening very often. The dear wife does not like it on her Escape either.
Thread Starter
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Tuned
Joined: Oct 2004
Posts: 442
Likes: 7
From: reno nevada
None of my F150s had the auto start/stop, but I've never understood why people are opposed to the idea. I can't stand an idling engine...it's wasting gas that could be used to get me down the road. My Subaru has a similar start/stop feature that I've never disabled.
It seems like the main concern people have is the increased wear on the starter. But it's important to remember that the starters and flywheels used for engines with this feature are specifically designed to handle the increased load. They've been used for 6 years now in the F150, and I've not heard of one failing. I'm sure it's happened, but it's far from a common problem. I think this is like worrying about wearing out your transmission because it shifts, or your pistons wearing out because they're moving up and down so fast. They're designed for the task, so it's not worth worrying about.
It seems like the main concern people have is the increased wear on the starter. But it's important to remember that the starters and flywheels used for engines with this feature are specifically designed to handle the increased load. They've been used for 6 years now in the F150, and I've not heard of one failing. I'm sure it's happened, but it's far from a common problem. I think this is like worrying about wearing out your transmission because it shifts, or your pistons wearing out because they're moving up and down so fast. They're designed for the task, so it's not worth worrying about.
All my vehicles are old, never driven anything that does that. My thought was it doesn’t seem necessary for the engine to shut off when I’m at a stop sign for 2 seconds.