Need question answered for 1993 Ford explorer

[elisha36]

Hello. I have an 1993 Ford Explorer, and it starts wonderfully, but when I place it in gear, it jumps off very fast, then shuts off on me. I changed the fuel pump, fuel filter, and then I thought it was my transmission; so I unplugged the torque converter switch. I have an automatic tranny and the truck have over 150, 000 miles on it. Can someone please tell me what the problem could be? Thanks for your help.
ELisha

 

[BrooklynBay]

When you said that it jumps, did you mean that it feels like it's in neutral, then it suddenly engages into gear, (then it stalls)?

 

[elisha36]

Yes, it wants to take off, then it just stalls out. It has a little jerk when it I place my foot on the gas pedal, it wants to go, but it feels like there is a brick under the front tires stopping it from going.