OK so I just picked up this 95 Grand Cherokee with the 5.2 v8 in it and auto trans, truck starts and runs fine no problems going forward at all, however when I put it in reverse if I give it any gas at all it dies. I can put it in reverse with my foot on the brake and it will idle fine, take my foot off brake and let it back up under its own power, fine. its only when I apply the gas it dies, and doesn't matter if I ease into it or gouge on it even with the whole gas brake at the same time. It only does it in reverse so im stumped. any ideas?