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Electrical burning smell - driver side

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Old Oct 19, 2021 | 09:14 AM
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Electrical burning smell - driver side

Yesterday, returning from a camping trip in the Texas Panhandle, during my fueling stops I noticed a strong smell of hot electrical while fueling. Not in the vehicle.
First time discounted it as an environmental issue in the area. About 150 miles later - about as far as this truck will get on a tank of gasoline with the travel trailer - I encountered the smell again. Investigated a little. It was strongest under the driver's side front wheel well. Popped the hood and nothing seemed out of order and smell was not noticed (but then again, I am 5' 7" and the truck is about 5 feet to the engine.
By the time I had gone in to the store, paid for some lottery and return the smell had dissipated.
When we pulled into RV storage, it was breezy and did not detect the smell, but did not make a real effort as I was busy getting ready to drop off the trailer.
 
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Old Oct 19, 2021 | 09:42 AM
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Just tossing it out there....maybe hot front brakes? If so, add more trailer brake gain.
 
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Old Oct 19, 2021 | 09:43 AM
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How many miles?

When I did my first test tow at just over 1,000 miles, I thought my truck was on fire it smelled so bad. But it was just factory residues burning off.
 
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Old Oct 19, 2021 | 09:45 AM
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Originally Posted by BSHORT
Just tossing it out there....maybe hot front brakes? If so, add more trailer brake gain.

that was my thought too as I read this


had a 2006 F350 with a front passenger brake that would stick sometimes. Was actually smoking at a stoplight one time.

 
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Old Oct 19, 2021 | 10:10 AM
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Truck has 11,700 miles. Not a lot of braking on this run (wide open Texas FMs/State highways), but the location would match up with front brakes getting hot. However, no similar smell on the passenger side.
 
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Old Oct 19, 2021 | 10:14 AM
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If it was electrical, the fault would have showed up pretty fast. Once the smoke is let out of a wire, they stop working or you are on fire. Maybe you picked up a plastic grocery bag along the way?
 
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Old Oct 19, 2021 | 10:14 AM
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Partial regen?
 
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Old Oct 19, 2021 | 10:28 AM
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Originally Posted by Joe T
Partial regen?
Believe OP has a gas engine truck, no regen.
 
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Old Oct 19, 2021 | 10:38 AM
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Originally Posted by Ltngdrvr
Believe OP has a gas engine truck, no regen.
Godzilla engine - 7.3 gas.
 
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Old Oct 19, 2021 | 10:38 AM
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Originally Posted by Ltngdrvr
Believe OP has a gas engine truck, no regen.
Gas truck that identifies as a diesel?
 
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Old Oct 19, 2021 | 10:51 AM
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I did a tow when my truck had like 800 miles. I too noticed a smilier smell but I dont smell it anymore. I think mine it was just the usual stuff burning off. And like you I smelled it out of truck. I no longer smell anything anymore out of the ordinary.
 
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Old Oct 25, 2021 | 01:42 PM
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Dealer called today. Nothing found, but techs suggested it could be related to brakes while towing. Had a couple of alerts show up on my app I mentioned to them, but not sure if the checked them (guessing they did a full scan). One was "malfunction indicator lamp - regulatory: engine system has detected a fault. The other was "Charge system fault."
 
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Old Nov 25, 2022 | 10:14 PM
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I experienced the same smell from truck today as well I was not towing anything but was running truck hard trying to make my kids soccer game lol.

smell was driver side only. My first thought was a spark plug wire melting?
 
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Old Nov 26, 2022 | 08:44 AM
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it's been a few thousand miles since I experienced the issue and towing a bigger travel trailer and the smell has not been noticed.
 
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Old Nov 26, 2022 | 10:38 AM
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I too have had this a few times, but on the passenger side, I am starting to think that in my case it has something to do with the hub not releasing fully once in awhile, after I had it in 4X4...
 
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