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The Terminator
Engine/Tuning
Help with P0193 after fuel pump install
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<blockquote data-quote="LEATHAL VENOM" data-source="post: 16818850" data-attributes="member: 46688"><p>Still struggling with code P0193 - I've replaced the Fuel Pump Driver Module and the same code comes up P0193 - when I turn the key on with engine off I get 5.1v at frps and I'm getting 17.35v at the fuel pump which seems wrong to me, I think the Boost-A-Pump is designed to ramp up voltage not supply max voltage right away. If I start the car the voltage at the frps remains at 5.1v until I crack the throttle and then it settles down to 2.8ish, the fuel pressure seems good on the scanner at 39psi but the service engine light remains on. </p><p></p><p>If I bypass the Boost-A Pump so its running on the factory setup I am getting 4.8v at the frps with the key on engine off and 60psi on the scanner, when I start the engine the frps voltage drops to around 2.7v and fuel pressure sits around 39psi on the scanner. I know I can't run the car on this setup as the car needs more fuel than the factory pumps can provide under heavy acceleration which is why I have the boost-a-pump in the first place. </p><p></p><p>I am thinking the boost a pump is the problem however I was hoping for someone to chime in just incase I am missing something. I don't think the PCM or wiring could be the issue if the light goes out with the factory setup and the voltages go back into line. I'm not sure if it is possible that the tune somehow has been compromised and causing this issue but it would mean the tune is only bad when the boost-a-pump is hooked up which doesn't make sense to me either.</p><p></p><p>I'm out of idea's, any thoughts before I pull the trigger on a new Boost-A-Pump?</p></blockquote><p></p>
[QUOTE="LEATHAL VENOM, post: 16818850, member: 46688"] Still struggling with code P0193 - I've replaced the Fuel Pump Driver Module and the same code comes up P0193 - when I turn the key on with engine off I get 5.1v at frps and I'm getting 17.35v at the fuel pump which seems wrong to me, I think the Boost-A-Pump is designed to ramp up voltage not supply max voltage right away. If I start the car the voltage at the frps remains at 5.1v until I crack the throttle and then it settles down to 2.8ish, the fuel pressure seems good on the scanner at 39psi but the service engine light remains on. If I bypass the Boost-A Pump so its running on the factory setup I am getting 4.8v at the frps with the key on engine off and 60psi on the scanner, when I start the engine the frps voltage drops to around 2.7v and fuel pressure sits around 39psi on the scanner. I know I can't run the car on this setup as the car needs more fuel than the factory pumps can provide under heavy acceleration which is why I have the boost-a-pump in the first place. I am thinking the boost a pump is the problem however I was hoping for someone to chime in just incase I am missing something. I don't think the PCM or wiring could be the issue if the light goes out with the factory setup and the voltages go back into line. I'm not sure if it is possible that the tune somehow has been compromised and causing this issue but it would mean the tune is only bad when the boost-a-pump is hooked up which doesn't make sense to me either. I'm out of idea's, any thoughts before I pull the trigger on a new Boost-A-Pump? [/QUOTE]
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Help with P0193 after fuel pump install
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