Engine Shuts Off While Driving
I've got an intermittent issue where my engine shuts itself off while driving.Needless to say this is quite a scary event.I get an alert on my DIC which says...."Auto StartStop Shift to P, then Restart Engine".Sounds simple enough but when cars are flying by, and you've stalled, it's unnerving to say the least.Anyone experience this or have any knowledge as to what can be causing this?
Junior Member
Joined: Nov 2022
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It happened to me too
Guys,so maybe I'm not explaining myself quite well here so I apologize.My issue is driving down the road and my engine shuts off.I'm not talking about the engine shutting down at a stop light.Also,I always turn my start/stop off as soon as I start my truck.The alert I get on my instrument panel references the auto start/stop but I really can't understand why that would shut my engine down at 25mph
Senior Member
Joined: Mar 2021
Posts: 4,782
Likes: 2,387
In your description is something that can lead to a false assumption.
Think closely about this.
If the engine shuts down due to a loss of electrical power, while moving >>>>>> then power returns from vibration or other, the auto stop start is [reset] by default as a new normal function request and shows up on the screen>>after the fact, while still moving.
Same thing as turning off the Ignition and doing an Ignition On cycle to restart the engine.
It certainly appears the truck is losing basic power intermittently from a faulty fuse, or fuse seating, or relay, or a Distribution fault.
I can't see it being anything else.
The old trucks that had the PATS system did the same thing, reset the PATS because power was lost, or engine stopped. Many assumed it was a PATS system issue, when it was not. Once the engine is running, PATS had no more to do with the engine stopping.
.
If it were me, I have a Scanner and would plug it up to see live data full time and watch the display for the signs of electrical power loss. The Scanner would display Connection Lost, as the basic hint of what happened.
Good luck.
Think closely about this.
If the engine shuts down due to a loss of electrical power, while moving >>>>>> then power returns from vibration or other, the auto stop start is [reset] by default as a new normal function request and shows up on the screen>>after the fact, while still moving.
Same thing as turning off the Ignition and doing an Ignition On cycle to restart the engine.
It certainly appears the truck is losing basic power intermittently from a faulty fuse, or fuse seating, or relay, or a Distribution fault.
I can't see it being anything else.
The old trucks that had the PATS system did the same thing, reset the PATS because power was lost, or engine stopped. Many assumed it was a PATS system issue, when it was not. Once the engine is running, PATS had no more to do with the engine stopping.
.
If it were me, I have a Scanner and would plug it up to see live data full time and watch the display for the signs of electrical power loss. The Scanner would display Connection Lost, as the basic hint of what happened.
Good luck.
Last edited by Bluegrass; Nov 11, 2022 at 05:59 PM.
Junior Member
Joined: Nov 2022
Posts: 4
Likes: 2
This exact thing happened to us this past Saturday. We bought a brand new 2022 Ford F-150 Lariat on Black Friday. It was raining Saturday night when it happened. The engine would totally shut off while we were driving about 20-30 mph. It was a very scary situation and would have been much worse if we were going faster.
Today, the dealer called us and said they think the issue was due to a leak and water was getting on the main control (basically the computer). Will keep you all updated if they are able to 100% fix the issue.
Today, the dealer called us and said they think the issue was due to a leak and water was getting on the main control (basically the computer). Will keep you all updated if they are able to 100% fix the issue.
This exact thing happened to us this past Saturday. We bought a brand new 2022 Ford F-150 Lariat on Black Friday. It was raining Saturday night when it happened. The engine would totally shut off while we were driving about 20-30 mph. It was a very scary situation and would have been much worse if we were going faster.
Today, the dealer called us and said they think the issue was due to a leak and water was getting on the main control (basically the computer). Will keep you all updated if they are able to 100% fix the issue.
Today, the dealer called us and said they think the issue was due to a leak and water was getting on the main control (basically the computer). Will keep you all updated if they are able to 100% fix the issue.
Thread Starter
Member
Joined: Aug 2021
Posts: 62
Likes: 18
From: Florida
Guys,sorry I did not post the resolution to my engine shutting down issue.I believe I did in another thread but here’s what happened.One of the Ford Reps reached out to me and she arranged for a visit to the dealership and kept in contact with me throughout the process.It turned out to be a faulty battery.It was replaced and has worked well so far.My thanks to the Ford Rep for her help.It is most appreciated
Last edited by phantomfixer; Nov 29, 2022 at 03:15 PM.
Senior Member
Joined: Oct 2021
Posts: 706
Likes: 231
From: AL
Thanks for feedback on your issue. One quick question for everyone monitoring this thread, Doesn't the alternator provide vehicle power when "my engine shuts itself off while driving.", not the battery?