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Open Roads Forum  >  Tow Vehicles

 > 2020 F350 6.7 weak start

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dieseltruckdriver

Black Hills of SD

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Posted: 04/11/22 06:10pm Link  |  Quote  |  Print  |  Notify Moderator

Fisherman wrote:

thomasmnile wrote:



We have a 2019 Highlander. Was sitting in a parking lot waiting on my wife while she was in a fabric store. Ignition in accessory position, radio on nothing else. The master alarm suddenly goes off and the dash display pops the following message " shutting Ignition off to conserve battery". Radio only????? After 20 minutes????
.....


Mfgr's put the smallest battery in there, thank the bean counters.
Actually not always. My wifes Taurus takes the same battery as my 7.3l Powerstroke. Only one of them though. [emoticon]

My best friend has a 2017 or 18 6.7l and he left his sit most of the winter without starting it and it cranked right up when he tried it early this spring.


2000 F-250 7.3 Powerstroke
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jdc1

Rescue, Ca

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Posted: 04/11/22 06:35pm Link  |  Quote  |  Print  |  Notify Moderator

More and more **** is added to vehicles that have a memory, drawing power while you sleep.

Retired JSO

North Georgia Mountains

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Posted: 04/11/22 07:51pm Link  |  Quote  |  Print  |  Notify Moderator

Cold weather start on 6.7 will take a second or two before the starter engages to allow the glow plugs to cycle.





blofgren

Surrey, B.C.

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Posted: 04/11/22 09:05pm Link  |  Quote  |  Print  |  Notify Moderator

It could very well be the batteries getting weak, although Motorcraft batteries are known to be very good.

My Ram was beginning to crank slower at around year 3 as well, and I was having all sorts of weird glitches with the stereo and instrument panel. Then one day it wouldn't start. I installed 2 new fresh Kirkland batteries and all has been fine since. Erratic voltage from batteries starting to go south wreaks havoc on newer vehicles.

Please keep us posted!


2013 Ram 3500 Megacab DRW Laramie 4x4, 6.7L Cummins, G56, 3.73, Maximum Steel, black lthr, B&W RVK3670 hitch, Retrax, Linex, and a bunch of options incl. cargo camera
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way2roll

Wilmington NC

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Posted: 04/12/22 05:59am Link  |  Quote  |  Print  |  Notify Moderator

Appreciate all the replies. I'll make the appointment at the dealership and let you know what they find out.


2020 F350 STX 6.7L Turbo Diesel
2020 FR Cedar Creek Silverback 29rw

Busdriver

Shepherdsville Ky 40165

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Posted: 04/12/22 06:04am Link  |  Quote  |  Print  |  Notify Moderator

Power strokes are hard on battery life


Busdriver 2019 2500 Chevy Duramax , - 2017 Grand Design 303 RLS

way2roll

Wilmington NC

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Posted: 04/12/22 06:04am Link  |  Quote  |  Print  |  Notify Moderator

Grit dog wrote:

So it cranks slower after sitting for only a day, but cranks faster if started within the same day as it was run last?
If that's the case, it is not the starter, it is the batteries.
If you dont want to test them, and suspect bad battery/power draw, just let it sit for a few days and see if it's worse than 1 day. Otherwise, check battery voltage of each battery separately and/or have them load tested.

That's where I'd start (no pun intended, lol)


Ha!, I love a good pun.

This pretty much explains the problem. It's a weak start after sitting a few days, but started on the same day or after being driven it starts right up. I guess that does sound like a battery problem. Just interesting that the batts would go bad in 2 years?

schlep1967

Harrisburg, PA

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Posted: 04/12/22 06:40am Link  |  Quote  |  Print  |  Notify Moderator

There is a new battery purchase in your near future. Probably one of the batteries is bad but you can't just replace one.


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way2roll

Wilmington NC

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Posted: 04/12/22 06:52am Link  |  Quote  |  Print  |  Notify Moderator

schlep1967 wrote:

There is a new battery purchase in your near future. Probably one of the batteries is bad but you can't just replace one.


Agreed. One thing I do know is that all batteries should be replaced at the same time. I'll let you guys know what Ford says.

On Edit, got an appt for Monday. They want me to drop it off Sat so it sits for a few days to try and replicate the problem. She seemed familiar with the issue as well as with the hard shifting into 3rd. Hopefully they are both easy fixes. Didn't think to ask if I am paying for this diagnostic test. Been over a decade since I've had a new vehicle.

* This post was edited 04/12/22 07:43am by way2roll *

phillyg

SWFL

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Posted: 04/12/22 08:44am Link  |  Quote  |  Print  |  Notify Moderator

It's not the first time I've heard of this problem. I suggest you go the warranty route for a good diagnostic. My 350 is much older and its not a daily driver, but if I leave it for more than a week I can tell the batts have been subject to a parasitic draw.


--2005 Ford F350 Lariat Crewcab 6.0, 4x4, 3.73 rear
--2016 Montana 3711FL, 40'
--2014 Wildcat 327CK, 38' SOLD

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