toyota 1988

well ive tried, the fuel pump is not cutting on so i take the old fuel pump that still works and hook it up to the gas line and run wires to the batt and try to start it up ( nothing) Ive took the timing chain cover off it is still in good condition, the fuel pump is not cutting on( it has a new one and the old one still works, there seems to be corrosion in the computer. I thought it was a gas problem all alone, well it was getting pleny of gas running it straight through a line. Please help, i have mechanic skills but right now im stuck on the issue its giving me. Thankyou.

1994runner

Check for injector pulse. They should have power at all times and the computer will pulse the ground to fire them. You can use a standard test light for this by hooking it to power once you know which are the gound wires or get a "noid" light set cheap from a good parts store that plugs in place of the injector. Power with no ground would be wiring or ecu.