Help with my mustang please!! :(
So I've had an issue with my car. Low rpms, gas delay, rough idiling. So I looked up the symptoms and thought it was the throttle body. Looked up the best cleaner, bought it, cleaned it. No avail. So I took it to ford. They told me "faulty alternater". I told him are you sure it's not the tb or tps? He says " oh look at you knowing about your car" (((durrr)))) I guess because I'm a girl I should be like O M G like what's a spark plug?? Anyway..so the job estimated at 600.00 um for a alternater?? No thanks. Went and had a friend of mine get me a deal on one and he installed it. He's also a mustang owner, and had done over 10,000 in engine work on his gt. So I was ok with him playing under my hood. So no avail there. Went back to ford, they told me probably need to reset your computer. Eh no. Went back last week, now they say " oh you need a new throttle body" oh you mean what I said 500 years ago!!? So I complained to the director of service and a 747.00 job went down to 480.00. So now wondering could I just buy a throttle body and have my friend install and if so, which would be the best to invest in? I saw buzz on the BBK 62mm, but I've seen mixed reviews. Anyone have one and are there any other suggestions? My car is sitting down at the ford dealership since Halloween. I sureeee miss her!!! Some help would be appreciated thanks.
Any typos, excuse it because I'm on my mobile.