C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

fuel pump question

Old Feb 20, 2012 | 09:22 PM
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Well I went to start my 383 for the first time today and ran into a bit of a problem. I put a mechanical oil pressure gauge in. Well I wasnt thinking that the computer has to have that sender to let the fuel pump turn on. My question is, is there any way to by pass this? and/or put the pump to a switch instead?
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Old Feb 20, 2012 | 10:06 PM
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Originally Posted by c4vette85
I went to start my 383 for the first time today
Need full story on your engine swap
What induction?

If you have done a carb conversion then you need to wire the relay to the Ign switch
so it gets power to run the pump

Originally Posted by c4vette85
l I wasnt thinking that the computer has to have that sender to let the fuel pump turn on.
My question is, is there any way to by pass this? and/or put the pump to a switch instead?
The computer runs the pump relay by itself without any input from the OP switch.
Op switch runs the pump direct passing the relay as a backup to the relay

Last edited by vetteoz; Feb 20, 2012 at 10:09 PM.
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Old Feb 20, 2012 | 10:14 PM
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I used the tpi for a sleeper look to the motor. Ok so I was told wrong then. Does the computer need to read oil pressure to let the injectors fire?
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Old Feb 20, 2012 | 10:38 PM
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Nope
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Old Feb 20, 2012 | 10:49 PM
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Originally Posted by c4vette85
Does the computer need to read oil pressure to let the injectors fire?
Two different issues
Pump run or injector fire; which do you have?
In any case no reason not to install a T piece so you can have gauge and OP switch in place
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Old Feb 20, 2012 | 10:56 PM
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Sorry didn't want to confuse anything. I was just curious about the injectors. Thanks for everyone's help. Should have her running tomorrow
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