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Electrical How To Make Fuel Pump Run After Efi To Carb Switch

  • Thread starter Thread starter 85fiveohman
  • Start date Start date Jun 20, 2013

85fiveohman

New Member
Feb 25, 2011
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Jun 20, 2013
#1
  • Jun 20, 2013
  • #1
ok I have a 94 vert I got thru trade it had been switched to carb by the previous owner but was a hack job. I have went thru and cleaned it up and installed a duraspark style ignition on the car. the factory 42 pin plug is still in the engine bay but the engine harness has been removed but I wired it up so my factory tach and oil psi and water temp gauge would work. my problem here is the fuel pump will cycle with key on but will not run how do I make it run when the car is running I had a family member convert a 89 vert to carb and he ran a signal wire from the coil to the control module plug to make the fuel pump act like it should my question is have any of you ran into this and fixed it if so how? I do not want to run a toggle switch would like to keep it all in wiring.
 

revhead347

Apparently my ex-husband made that mistake.
20+ Year Stangneter
Jun 14, 2004
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Acworth, GA
Jun 21, 2013
#2
  • Jun 21, 2013
  • #2
Are they still running the stock fuel pump? You can't do that. It puts out over 100 psi of fuel pressure, and the carb needs like 7. If it still has the stock fuel pump in there, you need to wire in an under hood fuel pump, and put a pickup tube in the tank.

Kurt
 

85fiveohman

New Member
Feb 25, 2011
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2
Jun 22, 2013
#3
  • Jun 22, 2013
  • #3
It has the stock in tank fuel pump right now yes wit a return style reg. its regulated down to 6 psi I plain to put a holly blue on it in the future but I will be using the existing wiring. So as of right now I am just trying to get it to function as it should
 

95Vert383AOD

15 Year Member
Jun 10, 2008
1,133
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New Bedford, MA
Jun 24, 2013
#4
  • Jun 24, 2013
  • #4
You can use a electric carb pump in the trunk using oem wiring i believe.
 

85fiveohman

New Member
Feb 25, 2011
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0
2
Jun 25, 2013
#5
  • Jun 25, 2013
  • #5
I am trying to figure out how to make the pump run while the car is.
 

85fiveohman

New Member
Feb 25, 2011
9
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2
Jul 1, 2013
#6
  • Jul 1, 2013
  • #6
No one?
 
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