bad bog in first gear

[streetyme]

Hello my 86 has developed a bad bog and bucks in first gear , if I drop the hammer. Now if I roll into it it is fine... Any ideas would be greatly appreciated

 

[84Ttop]

Is it a stick? Is the clutch slipping? Auto, trans slipping?

 

[streetyme]

No its a auto, and it seems either fuel or electrical related.. I just dont know if it could be spark plugs, o2 sensors or the tps sensor ... I just repalced the IAC motor

 

[streetyme]

I guess it could also be a faulty fuel pump...