I went straight into the US Army when I got out of high school, while serving I was able to knock out a few basic courses at a community college. Once I got out, I went to school nights while working days and eventually got a Bachelor's degree in Electrical Engineering. I'm not recommending doing what I did, but it worked for me.
If you're going to get an engineering degree, you're going to have to take calculus and physics (check the curriclum at the school you are targeting to see if those courses are required). We used to joke that calculus is the course that separates the liberal arts majors from the engineering majors.
You have to know algebra and trigonometry inside out to do well in calculus, yeah there are people that can pick it up easily, but that's about 5% of the people who take calc. If you did not do well in math while in HS, you'll probably struggle in calculus and physics, just saying this to let you know what you're going to face if you do get accepted into an engineering school. Not trying to scare you away, but if your math skills aren't good, you may want to consider taking algebra and pre-calc at a CC, so that you know this stuff cold, college calculus profs aren't going to teach you these thing in class, you have to know them going in.