efi 86 stang carb motor fuel ?

holset35 · May 29th, 2011, 07:36 PM

I switched my motor to a carb setup and still have the efi fuel pump.I have the fuel lines going to a fuel pressure regulator and iam getting no pressure.So I need to keep the pump running so I can build up pressure.How can I rig a way to get the pump to run when the car runs.

skeletonpsycho · May 29th, 2011, 07:55 PM

you need to put a relay in so you have ignition hot basically you need to power the pump with the ignition key and the safest way to do that is with a fuel pump relay kit from summit or painless that way you have a curcuit breaker as well

holset35 · May 29th, 2011, 08:36 PM

Where are the wires at in the wiring harness or am I going off the wires on the fuel pump.

ryanw · May 29th, 2011, 08:52 PM

your fuel pump relay should be under the drivers seat

skeletonpsycho · May 29th, 2011, 08:54 PM

i would cut the pump wires in the spare tire well (with deleting the computer the original wires should not carry voltage) you can mount the relay and circuit breaker behind the hatch latch panel,you can ground right there,then just run the hot and key hot through car right to it,im assuming you deleted all efi wiring but retained original body harness

skeletonpsycho · May 29th, 2011, 09:02 PM

Originally Posted by ryanw

your fuel pump relay should be under the drivers seat

with deleting the efi the relay wont carry voltage since the computer controls the fuel system now he can tap into that relay but i think in this situation adding a new relay and circuit breaker would be best that way its isolated from the factory "rats nest" of wiring

holset35 · May 29th, 2011, 09:16 PM

I dont know what wires to delete yet.I need to get the fuel problem finished so the car can start and stay running.

skeletonpsycho · May 29th, 2011, 09:23 PM

well you can eliminate the computer and harness and hook your pump up like i expained and you should be good to go,you no longer have a use for any of that

holset35 · May 30th, 2011, 11:14 PM

That is good to know my buddy and i are gonna tackle it tomorrow.

93hatch · May 30th, 2011, 11:16 PM

no no no just find the power wire in the relay and wire it directly to the pump aka cross them right at the relay. Pump will come on when keys in the on position and stay on. Thats how my car is

skeletonpsycho · May 31st, 2011, 06:43 AM

he can do it that way,originally i was thinking he removed all efi related wiring but at this point it seems everything is still in the car lol

holset35 · May 31st, 2011, 08:39 PM

Wired it up today and she fired right up thanks every one.

skeletonpsycho · May 31st, 2011, 09:24 PM

awsome bro which route did you go with

May 29th, 2011, 07:36 PM	#1
holset35 Regular 1986 LX NOTCH Join Date: May 2010 Location: MICHIGAN Posts: 140 iTrader: 0 reviews	efi 86 stang carb motor fuel ? I switched my motor to a carb setup and still have the efi fuel pump.I have the fuel lines going to a fuel pressure regulator and iam getting no pressure.So I need to keep the pump running so I can build up pressure.How can I rig a way to get the pump to run when the car runs. __________________ 86 TRUNK 359w-SRP 8:1-GT40Ps-X303-MAC LONGTUBE'S-VICTOR JR INTAKE-850 HOLLEY-T-5-410's-150 shot

May 29th, 2011, 07:55 PM	#2
skeletonpsycho Regular 1987 mustang GT 10.92@122 Join Date: Apr 2011 Location: ephrata pa Posts: 158 iTrader: 0 reviews	you need to put a relay in so you have ignition hot basically you need to power the pump with the ignition key and the safest way to do that is with a fuel pump relay kit from summit or painless that way you have a curcuit breaker as well __________________ http://www.youtube.com/watch?v=gQ7g9ystpiU 347 all motor wawa pump gas driven everywhere

May 29th, 2011, 08:36 PM	#3
holset35 Regular 1986 LX NOTCH Join Date: May 2010 Location: MICHIGAN Posts: 140 iTrader: 0 reviews	Where are the wires at in the wiring harness or am I going off the wires on the fuel pump. __________________ 86 TRUNK 359w-SRP 8:1-GT40Ps-X303-MAC LONGTUBE'S-VICTOR JR INTAKE-850 HOLLEY-T-5-410's-150 shot

May 29th, 2011, 08:52 PM	#4
ryanw I Post Entirely Way Too Much 1991 Ford Mustang GT Join Date: May 2007 Location: San Diego, California Posts: 6,063 iTrader: 0 reviews	your fuel pump relay should be under the drivers seat __________________ DART 331ci stroker, AFR 185 heads, Trick Flow R intake, Accufab 70mm tb, 75mm pro m Maf, 30lb injectors, jba headers, 2 1/2" x pipe flowmaster super 10 mufflers, 255 fuel pump, 3:27 gears

May 29th, 2011, 08:54 PM	#5
skeletonpsycho Regular 1987 mustang GT 10.92@122 Join Date: Apr 2011 Location: ephrata pa Posts: 158 iTrader: 0 reviews	i would cut the pump wires in the spare tire well (with deleting the computer the original wires should not carry voltage) you can mount the relay and circuit breaker behind the hatch latch panel,you can ground right there,then just run the hot and key hot through car right to it,im assuming you deleted all efi wiring but retained original body harness __________________ http://www.youtube.com/watch?v=gQ7g9ystpiU 347 all motor wawa pump gas driven everywhere

May 29th, 2011, 09:16 PM	#7
holset35 Regular 1986 LX NOTCH Join Date: May 2010 Location: MICHIGAN Posts: 140 iTrader: 0 reviews	I dont know what wires to delete yet.I need to get the fuel problem finished so the car can start and stay running. __________________ 86 TRUNK 359w-SRP 8:1-GT40Ps-X303-MAC LONGTUBE'S-VICTOR JR INTAKE-850 HOLLEY-T-5-410's-150 shot

May 29th, 2011, 09:23 PM	#8
skeletonpsycho Regular 1987 mustang GT 10.92@122 Join Date: Apr 2011 Location: ephrata pa Posts: 158 iTrader: 0 reviews	well you can eliminate the computer and harness and hook your pump up like i expained and you should be good to go,you no longer have a use for any of that __________________ http://www.youtube.com/watch?v=gQ7g9ystpiU 347 all motor wawa pump gas driven everywhere

May 30th, 2011, 11:14 PM	#9
holset35 Regular 1986 LX NOTCH Join Date: May 2010 Location: MICHIGAN Posts: 140 iTrader: 0 reviews	That is good to know my buddy and i are gonna tackle it tomorrow. __________________ 86 TRUNK 359w-SRP 8:1-GT40Ps-X303-MAC LONGTUBE'S-VICTOR JR INTAKE-850 HOLLEY-T-5-410's-150 shot

May 30th, 2011, 11:16 PM	#10
93hatch Banned 1992 Lx 11.39@119.24 Join Date: Jan 2008 Location: Az Posts: 11,644 iTrader: 0 reviews	no no no just find the power wire in the relay and wire it directly to the pump aka cross them right at the relay. Pump will come on when keys in the on position and stay on. Thats how my car is __________________ [QUOTE=93mustank;2577445]We speed tested my right arm for quickness in shifts... So he could design the cam for proper shift recovery.[/QUOTE]

May 31st, 2011, 06:43 AM	#11
skeletonpsycho Regular 1987 mustang GT 10.92@122 Join Date: Apr 2011 Location: ephrata pa Posts: 158 iTrader: 0 reviews	he can do it that way,originally i was thinking he removed all efi related wiring but at this point it seems everything is still in the car lol __________________ http://www.youtube.com/watch?v=gQ7g9ystpiU 347 all motor wawa pump gas driven everywhere

May 31st, 2011, 08:39 PM	#12
holset35 Regular 1986 LX NOTCH Join Date: May 2010 Location: MICHIGAN Posts: 140 iTrader: 0 reviews	Wired it up today and she fired right up thanks every one. __________________ 86 TRUNK 359w-SRP 8:1-GT40Ps-X303-MAC LONGTUBE'S-VICTOR JR INTAKE-850 HOLLEY-T-5-410's-150 shot

May 31st, 2011, 09:24 PM	#13
skeletonpsycho Regular 1987 mustang GT 10.92@122 Join Date: Apr 2011 Location: ephrata pa Posts: 158 iTrader: 0 reviews	awsome bro which route did you go with __________________ http://www.youtube.com/watch?v=gQ7g9ystpiU 347 all motor wawa pump gas driven everywhere

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