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1990 Toyota truck 3L V6 why does power fail to the fuel pump after the ignition key returns from start to run?
Wiki User
∙ 15y ago
The computer detects whether the engine is running and turns off the fuel pump in about five to ten seconds if the engine didn't start.
If the engine starts and the fuel pump shuts off anyway, check for diagnostic codes, verify that the relays are working properly and check that the computer is able to determine when the engine is running. BTW, it's probably NOT a problem with the computer.
Wiki User
∙ 15y ago
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