Re: Looking to purchase Ford Ranger
2.5 is bullet proof. The whine you hear is prolly just first gear in the auto tranny. I've heard lots of them do it, and have no problems. Don't worry about a lil vibration at idle, these trucks aren't insulated much, and the 2.5 naturally idles a lil rough. As long as the rest of the truck is clean, I say go for it.
I got my Jesus on the dashboard, but the Devil's under my hood!