I am having trouble starting my 4 cylinder 1989 camry. The engine cranks but will not fire. The last time it ran it died at a light when I put my foot on the gas. It then struggled to start but did but would die everytime I put it in drive. this happened many times, I then waited about 10 minutes and it started right up no problem and drove home. The next day it would not start at all. I am getting spark so I thought it was the fuel pump. I pulled the tank and the fuel pump works, however there is no voltage at the connector under the back seat. I replaced the EFI main relay and still no voltage at the connector. Is there anything else that would prevent electricity from getting to the fuel pump that I am missing? Please help.

 

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The EFI relay (fuel pump) only operates if the engine is cranking or running.

There may be an EFI bypass on in the wiring system. Look for a small box labeled "Diagnostic" inside the engine compartment perhaps mounted on a strut tower (location where the upper part of the strut mounts to the chassis).

If so, the box has electrical connectors. Use a section of wire to jump the B+ and FP terminals. This will allow the fuel pump to run when the ign switch is on.