Due to the recent problem I've been having with my stahling and surging I went to the junk yard today and pulled a fuel regulator. Im tired of buying brand new parts and the issue still being there. So for the price of a new one at advanced I got a fuel regulator,arm rest for driver side door,inside door handle and the ac/heater control cable. I've cleaned it up real good inside and out and plan on installing it Saturday. The general consensus on here and all over the web is the regulator very seldomly goes bad so I'm assuming the one I just pulled should be good. However on the off chance my luck stays the same is there a way to check it before I install it?