I looked at 95 3500 4x4 5spd today 168k and its in real good shape for its age and miles. It drives really well. The only thang that I'm concerned about is for one thang it idles at almost 1000rpm which I figure can be turned back down. Also the motor kinda shakes just a little at about 1200-1250rpms while outta gear but it doesn't do it at any other rpm. And while idling the shifter will shake a little but not much even though the motor doesn't. I figure that's due mostly to the high idle. The fuel gauge don't work either so what could be the cause of that? Any ideas/insight into the issues would be greatly appreciated. Thanks