I have an 04 Endeavor. For the past 6 months I’ve noticed a strong burning smell(it smells exactly like burning breaks) only while driving up “the mountain”. It’s several miles long, and it’s the only time I ever smell it. I thought it could have been the emergency break, maybe a spring popped off and while going up hill the incline was causing it to move it wear. So I took that apart and off and tried driving it without. But still the smell is there. Any input?