u/Fearless-Tennis-7619

Long story short, I put a new transmission in this thing because I bought it for $250. The engine runs amazing when in park, a little bit of a shake. Put when you put it into drive, it jerks pretty hard, and as you hear in the video, as soon as I take my foot off of the break (I DID NOT PRESS ON THE GAS) the speedometer skyrockets then it stalls. Engine mounts are brand new so that’s not the cause of the jerk. MAF sensor and throttle body are cleaned, shift linkage is good.

Any suggestions, no codes at all. It will drive and shift but it putters unless you step on the gas. And it thuds into gears.