[ODDs]

I did the old foil and Etape under the sensor. I think it gained .1V.

I've since unplugged the sensor entirely.

Yes, the foil does squat. Even after applying the foil, I was still seeing around 12.2 volts at times while towing this weekend

 

[ODDs]

We're talking about a fractional decrease in resistance based on reduced alternator drag. Another way to look at it is the alternator is still taking care of regulating charging, it's not like the alternator is running at full output, full drag, all the time. It's just maintaining a higher voltage.

I'm pulling a trailer on varying terrain that usually weighs somewhere between 5k-6k depending on the trip. Hard to gauge any real MPG gain/loss. I'm usually around 10 towing.

And I'm running load E AT tires. Took about a 1.5mpg hit there.

MPG isn't really of concern to me on this pig. But honestly no noticeable change just from unplugging the battery sensor.

Did you also loose 1.5mpg while towing? Or is that just around town, and while towing it is less of hit because you are already dealing with aerodynamic issues?

I would also like to get load E AT tires for our boondocking trips, but our beast already struggles pulling up mountains, so I hate to worsen the situation even further.

 

[ODDs]

I see what you mean.

I also have a 2005 Armada, but never had a situation like this.

I'm gonna try the foil and tape first.

But I'm a little concerned that disconnecting the sensor will cause the alternator to overwork. It's assuring that you got to some high mileage, but did you eventually have any issues with the alternator?.

I also tried the foil trick first, and it didn't work for me. So I just unplugged it, and it's been fine ever since (over a year).