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 Oct 24, 2010 | 01:31 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 Oct 24, 2010 | 01:36 PM
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the car does have spark.......
Old Oct 24, 2010 | 02:54 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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