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Do you have a voltmeter or 12 volt test light? Do you have a code reader? Are any codes set in the computer?
I see you requested a phone consultation but the payment failed I will offer the premium service to you and see if you can get it to go through we can discuss this matter via the telephone but that still does not work we will need to at least get access to a 12 V test light to see if you're losing power at specific points in the system. Keep in mind that the fuel pump will only run when the key is in the start position or the engine is running if the key is simply in the on position you will not have power to the fuel pump.