1)Did you unplug the fuel sending unit?Makesure its plugged back in,left side by strut tower..

2)Check the ground and power on the unit,pull it out of the tank and check it,check it with a test light to see if your getting power to the back,or you can check at that plug I was telling you in 1

3)also theres something about not enough power to get to the back to run some 255,theres a write up on rx7club.com for it..

3)it has a Ford 302 in it,what do you expect..