300ZX (Z31) Performance / Technical Discussions related to Turbo charging, Supercharging, Engine, ECU, exhaust, and etc. performance enhancements and Techical related.

Fuel pump issue

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Old 10-24-2010 | 02:31 PM
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Fuel pump issue

The fuel pump relay turns on the fuel pump, clicks, then the pump primes, shuts off after it's done. When the car is put into the starting position the wire that suppose to give the signal for the pump to run, gives none, what would cause this, for the computer not to send out the proper signal?
Old 10-24-2010 | 02:36 PM
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the car does have spark.......
Old 10-24-2010 | 03:54 PM
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I bypassed the computer and put the fuel pump on when the ignition is on, and the car runs. to help out a bit more on the diagnostics.
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