Electric fuel pump relay control - PowerStrokeNation : Ford Powerstroke Diesel Forum


Home Today's Posts Mark Forums Read
Go Back   PowerStrokeNation : Ford Powerstroke Diesel Forum > F-250 & F-350 1986-1997 & Other Ford Trucks > 1994-1997 Power Stroke Technical Info
Register Members List Timeslips Calendar Auto Loans Sponsors Becoming a Sponsor Mark Forums Read Auto Escrow

PowerStrokeNation.com is the premier Ford Forum on the internet. Registered Users do not see the above ads.
Reply
 
Thread Tools Display Modes
  #1  
Old 04-24-2010, 12:49 AM
JAKE
Offline
PSN nerd
Member's Gallery
 
Join Date: Aug 2007
Location: TOLAR,TX
Posts: 2,301
Electric fuel pump relay control

GRRR im so Fin frustrated with controlling a electric pump. I have gone the oil pressure switch to control the relay and they would last a year or so and die, now I have gone to having it off the alternator and now I have had a string of alternator issues. My next thought is control the relay off the idm power, is there anybody else that has done this? it either that or i was thinking about swapping to a SD pcm just to have the pump control. I have had the last alternator last about a year and this one lasted 3 months. the one before that lasted like 6 or 7 years.
__________________
97 F250SC 4X4 4 LINKED ON AIR <- FOR SALE!!!!!!

00 F350CC 4x4 I NEED A FLATBED FOR IT!!!!! LET ME KNOW IF YALL KNOW ANYBODY THAT HAS ONE



TOTAL DIESEL PERFORMANCE

STOCK HORSE OF TEXAS ASSN

SOUTHWEST REINED COWHORSE
Reply With Quote Go to the top
Sponsored Links
Advertisement
 
Sponsored Links
Advertisement
 
  #2  
Old 04-24-2010, 12:51 AM
nashvillebill
Offline
PSN Veteran
Member's Gallery
 
Join Date: May 2009
Posts: 797
Re: Electric fuel pump relay control

Use the red/light green from Fuse #22 that went to the fuel heater.

I don't even use a relay. I power the fuel pump directly from this wire.
__________________
'94 F250 supercab 4x4, original owner, 4.10LS, DIY elec fuel, Tymar air, Beans tunes on VA 4 position chip, Adrenaline HPOP, VDO boost/pyro/outside temp gauges, Ford digital AIC, DPPI downpipe, gutted EBPV, modded turbo ped, Con OFE, add-a-leafs front/rear, Monroe Reflex shocks, Milemarker 449SS hubs...coming soon: 6.0 IC...wish list: Stage 2's
Reply With Quote Go to the top
  #3  
Old 04-24-2010, 01:01 AM
Tom S's Avatar
Tom S
Offline
-Moderator-
Member's Gallery
 
Join Date: Jul 2007
Location: Littleton, Colo
Posts: 9,248
Send a message via AIM to Tom S
Re: Electric fuel pump relay control

I also control my relay off the old fuel heater circuit.
__________________
1996 F250 Powerstroke 4X4 AUTO
DP-Tuner F-6 chip live tuned, BTS Transmission, Garrett 38R Turbo, Swamps Injectors 150cc, electric fuel,
Banks Intercooler, Reflexxions Cowl Hood, 17 degree HPOP, 4" Stainless Magnaflow &
Aeroturbine exhaust, Aeroforce OBD Scan Gauge, Truxedo tonneau cover
Dana 60 Precision Metal Fab RSK and SD Springs
Reply With Quote Go to the top
  #4  
Old 04-24-2010, 01:41 AM
JAKE
Offline
PSN nerd
Member's Gallery
 
Join Date: Aug 2007
Location: TOLAR,TX
Posts: 2,301
Re: Electric fuel pump relay control

Sounds good I will have to get on that. I got time I bet its gonna be wedsday or thursday next week to get a replacement from DB

THANKS!!
Reply With Quote Go to the top
  #5  
Old 04-24-2010, 10:45 PM
speeddemon31176's Avatar
speeddemon31176
Offline
Demon Dually
Member's Gallery
 
Join Date: Oct 2009
Location: Carbondale,PA
Posts: 5,140
Send a message via AIM to speeddemon31176 Send a message via Yahoo to speeddemon31176
Re: Electric fuel pump relay control

Just a thought here but if you are burning up relays and fuses and have to keep finding a new location to pull power from, YOU HAVE AN ELECTRICAL PROBLEM :) . Start looking over your wiring to your fuel pump for a short / open somewhere along the line. You shouldn't be having that many issues or issues at all if you have it wired up correctly.
__________________
97 F-350 XLT CC DRW 4X4 PSD, 285/75-16 Custom bumpers, Gauges-boost/egt/trans, Swamps IDM, 3.5"dp- 4" exh., 3" Body lift, ES bushings/mounts, Built trans, billet conv, B&M pan, Hayden cooler, Adrenaline, stage 2's, IC, H2E, E-fuel
ARP's, 910's, Smith Bros. to come
Reply With Quote Go to the top
  #6  
Old 04-25-2010, 03:37 PM
JCart
Offline
PSN Veteran
Member's Gallery
 
Join Date: Nov 2007
Location: Kamloops, BC. Canada
Posts: 2,638
Re: Electric fuel pump relay control

Good idea on the fuel heater for power supply. Iirc on my 96 I hooked directly from battery fused, the trigger was from key on only circut from fuse box inside cab. The ground wire I ran through Hobbs oil pressure switch set up on the oil filter auxilliary port. As I recall needed 2 psi oil pressure to trigger ground....
jrc
__________________
Red 97 F250 CC 3:55, D60 Air Locker front, 175/80s, T500, TW files, Tymar, SD I/C, 6.0 fan, E-air, E-Fuel, SRK, SD springs front/rear, 145 litre rear tank (now ZF-5 ).
White / Silver 96 F250 4x2, SCSB E4OD, 4:10 stock for now mods to install: D60, engine stuff.
Truck pix write ups
Reply With Quote Go to the top
  #7  
Old 04-26-2010, 05:48 AM
old man dave
Offline
Terminator Nation
Member's Gallery
 
Join Date: Aug 2007
Location: Petaluma, Ca
Posts: 3,532
Re: Electric fuel pump relay control

You should be drawing relay power only for control from alternator, heater or ignition switch run hot. I used ignition switch run hot myself without any problems.

The fuel pump power should be from battery/fuse/relay/fuel pump/ground. This should be your high current draw pump power circuit.

The relay power should be ignition run position hot/fuse/relay control/ (optional inertia switch)/oil switch ground/. Should be low current draw for your power sensing/relay control and presenting a low current load to the relay power source.
__________________
Just another 408hp '97 California Truck with a stock muffler
Reply With Quote Go to the top
  #8  
Old 04-26-2010, 10:36 AM
Aljay's Avatar
Aljay
Offline
Don't EFN worry about it
Member's Gallery
 
Join Date: Jul 2007
Location: Fort Worth TEXAS Damn it !!
Posts: 15,474
Re: Electric fuel pump relay control

Main power from battery, trigger is from a key on source from under hood fuse panel.
__________________
97 crew cab shorty-4x4 Lots of mods .
Overfueled for your pleasure !
Reply With Quote Go to the top
  #9  
Old 04-26-2010, 06:31 PM
OBSWIZ
Offline
Sponsor
Member's Gallery
 
Join Date: Jan 2009
Location: Wellington NV.
Posts: 4,699
Re: Electric fuel pump relay control

You can also mod the underhood fuze box by adding a additional relay and using fuze #5 wire as a triger...works great and looke factory.
__________________
We only carry the BEST parts and never compromise just to get a sale.

Dealer for: Full Force, Tymar, BTS, Icon, Pure Performance, TW tunes, just to name a few.

email: ctperformanceinc@yahoo.com
Website: Home Introduction only. Please PM if I can help.
Reply With Quote Go to the top
  #10  
Old 04-26-2010, 06:55 PM
JAKE
Offline
PSN nerd
Member's Gallery
 
Join Date: Aug 2007
Location: TOLAR,TX
Posts: 2,301
Re: Electric fuel pump relay control

My relay is in the factory fuse box, I think there was something up with my alternator and it cooked the coil in the relay. I am going to power the relay coil off the fuel bowl fuse for now. The way its wired it looks very clean, the fuse is also in the factory box off of one of the empty spots I took advantage of.
Reply With Quote Go to the top
  #11  
Old 04-27-2010, 12:48 AM
joedown's Avatar
joedown
Offline
PMS medication required
Member's Gallery
 
Join Date: May 2008
Posts: 382
Re: Electric fuel pump relay control

Quote:
Originally Posted by JAKE View Post
My relay is in the factory fuse box, I think there was something up with my alternator and it cooked the coil in the relay. I am going to power the relay coil off the fuel bowl fuse for now. The way its wired it looks very clean, the fuse is also in the factory box off of one of the empty spots I took advantage of.
That's the way I did it. Looks the best that way and so far haven't had any issues.

Attached Images
File Type: jpg 029.jpg (86.6 KB, 53 views)
__________________
96 F350 4x4 XLT 7.3 59,428 orig miles, Stage I's, Adrenaline, IDM, gutted EBPV, Tymar intake, Banks intercooler, downpipe, gauges, TW 4 position chip, John Wood Towmaster, Ford 08 diff cover, Oil gauge mod, Electric fuel conversion, RSK, OH console, Durn cat done run off an I can't find it.
Reply With Quote Go to the top
  #12  
Old 10-26-2012, 01:30 PM
Shovel's Avatar
Shovel
Offline
PSN Local
Member's Gallery
 
Join Date: Jun 2012
Location: Orygun
Posts: 165
Re: Electric fuel pump relay control

Quote:
Originally Posted by nashvillebill View Post
I power the fuel pump directly from this wire.
This still working for you? What would be the drawbacks of not having a relay?

Seems to simple to be true.
Reply With Quote Go to the top
  #13  
Old 10-26-2012, 03:19 PM
csp
Offline
PSN Veteran
Member's Gallery
 
Join Date: Apr 2009
Location: Parker, CO
Posts: 2,214
Re: Electric fuel pump relay control

Your main power burning up the relay shouldn't have anything to do with whatever is triggering it. Very little amperage is going through the trigger circuit.
Reply With Quote Go to the top
  #14  
Old 10-26-2012, 04:11 PM
Shovel's Avatar
Shovel
Offline
PSN Local
Member's Gallery
 
Join Date: Jun 2012
Location: Orygun
Posts: 165
Re: Electric fuel pump relay control

But does the pump require that much amperage to make a relay necessary?
Reply With Quote Go to the top
  #15  
Old 10-26-2012, 04:46 PM
biggreen96's Avatar
biggreen96
Offline
PSN Veteran
Member's Gallery
 
Join Date: Aug 2010
Location: Visalia,CA
Posts: 671
Re: Electric fuel pump relay control

Yes a relay is necessary. The pumps can pull up to 30 amps and the wire for the fuel bowl heater is was to small for that. Need 10 gauge wire min. to the pump
__________________
96 cclb f350.
idm mod,
gauges-boost/pyro/trans temp
afe stage 2 intake
dp to 4" straight pipe
studs, springs, pushrods
srp1
intercooler
electric fuel convertion
238/100
dp-tuner f6
T-4 mount and s470.
Reply With Quote Go to the top
  #16  
Old 10-26-2012, 05:42 PM
Shovel's Avatar
Shovel
Offline
PSN Local
Member's Gallery
 
Join Date: Jun 2012
Location: Orygun
Posts: 165
Re: Electric fuel pump relay control

Quote:
Originally Posted by biggreen96 View Post
Yes a relay is necessary. The pumps can pull up to 30 amps and the wire for the fuel bowl heater is was to small for that. Need 10 gauge wire min. to the pump
Hmmmm, that might explain why my 18 gauge wire from my Bean's fuel system is now fried.
Reply With Quote Go to the top
Reply


(View-All Members who have read this thread : 44
2000f350v10, 79Ford7.3, 91F250XLIDI, 97PowerJoker250HD, 97psd16.5mpg, baggedbug, biggreen96, birddog55, CAV64, chunk99, csp, Dustin F2504x4, Elgin MGP, EPTF350, f350red, farmall16, fyrchieftx, Got4wd, gould9, Hijo202, jason mondy, jtsparks2, madpogue, maxndozer, melqdy, mghay, mikes95powerstroke, nm50, NutFarmer97, PsRumors, rodeo_man, rollingthunder, rpm-inc, RTJ1S, rusty1161, Shovel, smokinstroker, speeddemon31176, tdrracing, Tom S, turboaz2, venomusduck, weareweird69
Thread Tools
Display Modes


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 12:59 PM.



Powered by vBulletin® Copyright ©2000 - 2014, vBulletin Solutions, Inc.