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LS3 fuel pump wiring

Started by PhilAK, Jul 11, 2025, 07:31 PM

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PhilAK

#2
Jul 13, 2025, 12:47 PM
Found Omex manual and it appears ECU controls fuel pump via relay. Relay is clicking so needs replacing.

PhilAK

#1
Jul 11, 2025, 07:31 PM
Hi hope someone can help. Just replaced the fuel pump relay and output 12v ok. No voltage appearing at the pump. Does the grey wire output of relay go directly to pump, or to the ECU to control the pump. Thanks
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