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You are correct, this is a Throttle Body Injected engine. I had to look that up to be certain. For the two injectors to operate the computer must be operational, check the fuse(s) for the ECU, electronic control unit (the computer). Often there is a replay that can disconnect the injector ground connection in order to limit fuel when a engine over-revving condition exists too many RPMs). There can also be another relay for the fuel pump that can be dropped. Usually the fuel pump relay is cut of to limit engine RPMs. In the vent someone has direct-wired the fuel pump, the fuel pump relay being cut off would be ineffective to limit vehicle speed so dropping the ground (and killing power to the injectors) is done as a backup for safety. Verify the fuel pump runs for a moment when the key is switched to the run position. Use starting fluid to be certain it will run if fuel is provided. Consult a wiring diagram and look for relays in the wiring for the injectors.
IF THE FUEL PUMP YOU REPLACED IS ON THE ENGINE BLOCK IT IS A MECHANICAL PUMP AND THERE IS NO RELAY OR PUMP IN THE TANK. NEED MORE INFO TO CORRECTLY HELP
You could always run a fused wire from the fuse panel to the relay. This way when you turn the key, power goes to the accessory on the fuse panel, the fused wire you installed, and to the relay circumventing the problem and creating a protected circuit.
check the ignition switch do you have allot of keys on your key ring the weight of having too many keys on your key rings will wear out your ignition switch in a short time
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