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Old 07-06-2022, 06:12 PM   #1
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2018 F150 5.0 V8, tow package, starter issue

Ok, towing a 22 foot Rockwood, defintley not more than the truck can do, not exceeding 60 MPH often, driving 500-600 miles on legs of trips from east to wesr (Arizona was the first trip, just came back from Utah). 4 door, 5.5 bed, 36 gallon tank, factory tow package.

After long hauls, when stopping to get gas or make a rest station stop, if engine is cut off, the starter then drags and will sometimes not start engine.

Dealership cannot duplicate the issue and therefore will not fix it. Found something online about the drive train being close to starter and heat being the issue causing the starter to drag.

Questions: Has anyone else experienced this? Has anyone been able to correct it? How? Definitely is not the battery and once cooled the engine starts right up.

Thanks!
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Old 07-06-2022, 09:53 PM   #2
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You can find your starter and see how close it is to the exhaust. Seems like other F150s would have the same problem and I haven't heard of this. I have seen this on performance cars that have exhaust headers that run to close to the starter. May be a starter starting to go out.
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Old 07-07-2022, 07:48 AM   #3
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Here is a link to what I found on the internet

https://www.f150forum.com/f12/2018-f...unning-496138/

I am not the only person experiencing this apparently.

Thanks!
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Old 07-07-2022, 07:53 AM   #4
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The old square-body Chevy trucks had this problem. It was exhaust pipe heat on the starter motor.
Either build a shield or plan on sitting for a longer period of time...
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Old 07-07-2022, 09:17 AM   #5
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So far I have gotten around it

By leaving the motor running even when filling up with gas but I sort of hate to do that. Seems like it is an engineering defect which Ford ought to fix but not having much luck with that either.
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Old 07-07-2022, 11:04 AM   #6
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If itís a heat issue you could get a wrap/ blanket for starter and exhaust. You also have the option of running truck with trailer until it gets hot then take both to dealership. Click image for larger version

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Old 07-07-2022, 11:42 AM   #7
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There was someone else, I think on the F150 forums with the same issue, they finally replaced the starter and had no more issues.
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Old 07-07-2022, 11:49 AM   #8
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Starter runs about $400

Depending on who you buy it from and the quality. I, sort of, held off going that route until I was sure that would fix it which is why I sought help here.

I really do not think the starter is necessarily bad. It starts up fine in the morning when it has set and shows no symptoms at all. It is only on long runs and, as I mentioned, we went to Arizona (yep, hot) and then we went on trip #2 (Utah) just returning last week. It was hot there too.

Next week it is Montana. Likely to be hot there also.

It seems a good many people on the forum pull with an F150. I was hoping to encounter others who experienced the issue and how they fixed it.

Thank you!
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Old 07-07-2022, 01:52 PM   #9
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the F150 towing forum https://www.f150forum.com/f82/ may be more helpful as it is all heavy use of F150s and mainly towing issues.

There are a lot of F150 users here but many more on the F150 forum, I am on both and have seen several others also on both
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Old 07-07-2022, 02:45 PM   #10
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Dealt with this too

I had this same issue but it was on a Factory Five Cobra with a 302 and headers, not an F-150. In my case it was slow cranking after driving. Didn't matter where or how long it ran but after a 20m or so cool down it would fire up. But the starter housing was hot as heck which is commonly referred to as heat soak. The first two years after building the car I never had the issue and then in year 3 it started. My DW and I could not go anywhere without at least a 30/40m cool down period (the car). I tried everything, replaced the battery, replaced cables, even replaced the starter with a stock OEM starter, nothing worked until I installed a mini high torque starter. It draws less voltage and has more torque then the OEM, it is smaller so it doesn't succumb to the overheating the way that the originals do. I have never had a heat soak issue since installing it and the car fires on the first turn every time. They are more expensive then an OEM, but hey at least it will start.

Here is the link to one for a 2018 Ford F-150
https://www.summitracing.com/parts/eca-2073.


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Old 07-08-2022, 10:46 AM   #11
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Starter

I would try the heat blanket. I had the same problem w/ a big block chev. truck w/ headers. It fixed the problem in Texas heat. It is 106 today, I am inside. Good luck.
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Old 07-09-2022, 07:42 AM   #12
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Our 2019 F150 v8 had this problem last year. Pulling RV all day in 90+ degree heat. When restarting after stopping for gas, the starter would drag and act like it would not start, but it always did. Luckily, itís an easy fix! Had it into the dealer for some other warranty work, and mentioned this problem to the mechanic. He asked if when filling gas if I went past the first full click-off of the nozzle, and yes, I had been doing that, putting in every last drop in I could because 7 mpg pulling RV I figured every last drop counts! He said that is really bad and floods the engine upon startup, and to always stop at the first click-off. So I have been doing that ever since with no starter issues. Not sure all the technical aspects of why topping the tank causes this flooding but it fixed the problem anyway. Hope this helps!
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