I just hooked up an Air Fuel gauge, Trans Temp, and Vaccum gauge. Now only when the motor is cold and i take off it kind of stumbles and then takes off which of these could be affecting it ?

 

Vacuum gauge? What do you mean, what is it hooked too?

Also, on the a/f meter, what method did you use to splice into the trucks wires? The best way is to directly solder the wires together. If you cut and then just twist them and use a wire nut, or use any of the cheap wire splices you can buy at autozone, then you add resistance to the circuit, which can change the signal going to the PCM.

 

stumbles and then takes off - sounds like vacuum leak to me.

 

yea when you spliced into your vacum line for your reading, you causeed yourself a good old leak