Autostop eliminator harmful?

[Mav_RICK]

We used a Toyota Highlander for a rental once and you could bypass auto stop with less brake pedal pressure. Seemed like a good solution to me.

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[Jah.]

Mine hardly ever works due to battery not holding a charge large enough to enable it . so not an issue for me . crappy battery , crummy system .

 

[commadorebob]

Our habit on our eco boost has become: get in-close door-start engine-press disable button. It is now routine.

My dad does this in his 2018 Escape. The button is right behind the gear shifter so he literally just sticks his finger out and hits the button as he grabs the shifter to move it into drive. After five years, it is just habit now. When they bought another Escape, the specifically got a 2019 because it didn't have the dial.

We used a Toyota Highlander for a rental once and you could bypass auto stop with less brake pedal pressure. Seemed like a good solution to me.

You can on the Maverick too. I don't push the pedal down as far at stop signs specifically for that reason.

 

[colinl]

For many decades, it was known and universally accepted that for a typical car, 90% of engine wear occurred at startup. Specifically, cold start, but warm starting is also more wear than short idling, such as found in most autostop situations. (It's different if you're completely immobile in gridlock for long minutes at a time.) If you dispute this, you're certainly welcome to peruse this thread and others from the BITOG forums, but I don't care to rehash it here. You understand and believe it, or you don't. https://bobistheoilguy.com/forums/threads/engine-start-up-wear.147039/

I don't drive in urban conditions enough to gain anything from autostop. It is a nuisance, and it can be a safety issue if you're trying accelerate into traffic and have a 2-3 sec delay before the vehicle starts moving. But it's mainly the first paragraph I wrote. It's a lot of wear on the engine - not the starter - that is just unnecessary.

I have autostop eliminators in my Maverick and Bronco. No, the devices are not harmful.

 

[Montana]

For many decades, it was known and universally accepted that for a typical car, 90% of engine wear occurred at startup. Specifically, cold start, but warm starting is also more wear than short idling, such as found in most autostop situations. (It's different if you're completely immobile in gridlock for long minutes at a time.) If you dispute this, you're certainly welcome to peruse this thread and others from the BITOG forums, but I don't care to rehash it here. You understand and believe it, or you don't. https://bobistheoilguy.com/forums/threads/engine-start-up-wear.147039/

I don't drive in urban conditions enough to gain anything from autostop. It is a nuisance, and it can be a safety issue if you're trying accelerate into traffic and have a 2-3 sec delay before the vehicle starts moving. But it's mainly the first paragraph I wrote. It's a lot of wear on the engine - not the starter - that is just unnecessary.

I have autostop eliminators in my Maverick and Bronco. No, the devices are not harmful.

Yea, regardless of how well you feel "modern" engines are made, the oil needs to be pumped back to the top of the engine every time. I'm not a fan of A.S.S. systems for that reason alone. They are not holding oil pressure when they shut off and keeping the oil flowing. It's no different than normal starting. I'd personally like to minimize the amount my engine goes through the hardest task it has - which is the initial fluid cycle. One reason why I disliked the Hybrid so much and it was interesting to me to see those engines kick on constantly to maintain a temperature threshold anyways. Kind of defeated the purpose in Montana winters (although the MPG was still better, obviously, but could have been MUCH better if it wasn't a dual system).

 

[colinl]

Yea, regardless of how well you feel "modern" engines are made, the oil needs to be pumped back to the top of the engine every time. I'm not a fan of A.S.S. systems for that reason alone. They are not holding oil pressure when they shut off and keeping the oil flowing. It's no different than normal starting. I'd personally like to minimize the amount my engine goes through the hardest task it has - which is the initial fluid cycle.

yes, exactly. it is that simple.

and I do realize that there's a reason why the the 2.5 hybrid was designed to use 0w20 oil, and frequent restarting I'm sure is a huge factor. but I don't care how the oil galleys are designed and the orientation of the engine under the hood, you will definitely not have the same lubrication when the engine is restarted as you will if it just idles.

we haven't even gotten into the turbocharger on ecoboost engines. it is oil- and liquid-cooled, but that doesn't circulate either when the engine isn't running. if you're driving 'spiritedly', or towing/hauling your turbo is getting some work. you really don't want to shut off the engine for a few seconds at a stoplight when the turbo is glowing hot.

 

[AutobahnSHO]

For many decades, it was known and universally accepted that for a typical car, 90% of engine wear occurred at startup.

For MANY MANY decades it was a thing to tune the carbs, too.... BILLIONS of miles on hybrids have shown that modern engineering has overcome a lot of the older problems.

 

[colinl]

For MANY MANY decades it was a thing to tune the carbs, too.... BILLIONS of miles on hybrids have shown that modern engineering has overcome a lot of the older problems.

you can't disable autostop on a hybrid, nor should you try. the engine has to stop to get benefit.

this is about the ecoboost. my only point in referring to the Maverick hybrid is that it uses a very thin 0w20 oil.

 

[Dudley]

Auto stop is a government "we gotta save gas' requirement, and the autostop disable is a "this is stupid" remedy.

 

[Bob The Builder]

Mine stopped working around day 3 of owning my truck. Something tells me my battery is under 70% and will prolly hover there for the next couple years until it dies, then do it all over again.

 

[Mav_RICK]

You can on the Maverick too. I don't push the pedal down as far at stop signs specifically for that reason.

Ahhh I did not know that. If I had auto start stop I definitely would want that.

 

[Mav_RICK]

you can't disable autostop on a hybrid, nor should you try. the engine has to stop to get benefit.

this is about the ecoboost. my only point in referring to the Maverick hybrid is that it uses a very thin 0w20 oil.

Our Corolla Cross Hybrid actually uses 0W16

 

[Old Ford Guy]

I saw a study which said ASS could save up to 8% in heavy stop and go traffic.

First time I drove a vehicle with it was a rental F150. Took me a whole day to learn that you just need to let off the brake to start the engine to get ready to go. And it was TX in May so sometimes it kicked the engine on for the A/C anyway.

So I personally don't think it would be worth "defeating" it. Easy enough to drive with it on. *shrug*

i have observed that my '23 hybrid will engage the ICE to maintain 'optimal' hybrid battery charge. i have a rather long driveway, about 130ft. there are times pulling out that the ICE kicks in even if im just creeping out with zero throttle input. the master control unit computer decides all that stuff and i hardly ever give it a 2nd thought.

 

[colinl]

Mine stopped working around day 3 of owning my truck. Something tells me my battery is under 70% and will prolly hover there for the next couple years until it dies, then do it all over again.

I would reset the battery monitor before your next drive of 20-30+ minutes. it's in the manual and very easy. do that, watch the battery lamp flash, then startup and drive. if your battery is still healthy this might fix it. not for autostop, LOL. this is so your battery charges properly or you know for sure it's going to need replacement.

 

[Dudley]

When they bought another Escape, the specifically got a 2019 because it didn't have the dial.

I prolly shoulda also said I have the habit of setting the parking brake in all parked situations, so for me, doesn't matter dial or not. It is "get in-shut door-start engine-release brake/press disable button-put in gear". Ya know, "Get your motor runnin; Head out on the highway; Lookin' for adventure; In whatever comes my way."
But, I must admit, I would prefer a lever and not a dial AND the ability to select some gears like I can with my 2003 Grand Cherokee which includes being able to disable the OD when I am doing no more that 45 for some distance.

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