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Fuel Pump Power


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I'm not getting power to my fuel pump after the truck has been sitting for over a year. I traced ...




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Old 07-21-2014, 03:38 PM
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Fuel Pump Power

I'm not getting power to my fuel pump after the truck has been sitting for over a year. I traced power to the fuse #17 but when I check check for voltage across pins 85/86(coil) on the fuel pump relay I get nothing. I have power at pin #30 but nothing on the coil side to activate the relay. Does power for the relay coil come from the PCM or is it straight from the ignition switch?

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2005 Ram SRT-10 QC. Code Red twin turbo build.
2006 Ram SRT-10 RC. Punisher 4.5L Whipple build.
2006 Saleen Mustang SC-281
2004 Saleen Mustang Extreme-FOR SALE
1999 Ford Mustang Cobra convertible Saleen SA-20 clone
2006 Dodge Charger R/T "Monster SEMA car"
2007 Jeep SRT8 -SOLD
2002 Big Dog Pitbull - SOLD
2005 Saleen Mustang SC-281. Barricade replica-SOLD
2011 Ram Express. Stacey David/Gearz TV Drag-N-Wagon build.
2006 Saleen Mustang Extreme-FOR SALE
2012 Ford FX2 ProCharged
2007 Saleen Mustang SC-281-SOLD
2005 Ram SRT-10 CE #43-SOLD
2005 Ram SRT-10 QC-SOLD
1979 Dodge Lil Red Express
1969 Plymouth Roadrunner
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Old 07-21-2014, 03:47 PM
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Quote:
Originally Posted by seethrough View Post
I'm not getting power to my fuel pump after the truck has been sitting for over a year. I traced power to the fuse #17 but when I check check for voltage across pins 85/86(coil) on the fuel pump relay I get nothing. I have power at pin #30 but nothing on the coil side to activate the relay. Does power for the relay coil come from the PCM or is it straight from the ignition switch?
05 or 06? Since you have 2 I will get you some wiring diagrams posted up here once I get your confirmation.
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OMG, I think you're right! You're a genius, we should definitely put you in charge around here.
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#1357 of 3057 2004 Dodge Ram SRT-10 SOLD!
#2718 of 3057 2004 Dodge Ram SRT-10
#0851 2006 Dodge Ram SRT-10 RC SOLD!
#292 of 3057 2004 Dodge Ram SRT-10 SOLD!

THE FORMER BUMP KING

i love the cognac interior of the gen1/gen2 viper. if i could do it to my 10, i would!
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Old 07-21-2014, 06:37 PM
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The 05. Thank you
__________________
2005 Ram SRT-10 QC. Code Red twin turbo build.
2006 Ram SRT-10 RC. Punisher 4.5L Whipple build.
2006 Saleen Mustang SC-281
2004 Saleen Mustang Extreme-FOR SALE
1999 Ford Mustang Cobra convertible Saleen SA-20 clone
2006 Dodge Charger R/T "Monster SEMA car"
2007 Jeep SRT8 -SOLD
2002 Big Dog Pitbull - SOLD
2005 Saleen Mustang SC-281. Barricade replica-SOLD
2011 Ram Express. Stacey David/Gearz TV Drag-N-Wagon build.
2006 Saleen Mustang Extreme-FOR SALE
2012 Ford FX2 ProCharged
2007 Saleen Mustang SC-281-SOLD
2005 Ram SRT-10 CE #43-SOLD
2005 Ram SRT-10 QC-SOLD
1979 Dodge Lil Red Express
1969 Plymouth Roadrunner
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Old 07-21-2014, 07:04 PM
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Quote:
Originally Posted by seethrough View Post
The 05. Thank you
That will be my tonight project, bear with me it may be a few hours since I am walking out the door at work now.
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Quote:
Originally Posted by KyleB View Post
OMG, I think you're right! You're a genius, we should definitely put you in charge around here.
My YouTube channel:

http://www.youtube.com/channel/UCEsMsFATkTJq3k-BM26PfAg

Follow me on Twitter and Instagram: Andysavakinas



#1357 of 3057 2004 Dodge Ram SRT-10 SOLD!
#2718 of 3057 2004 Dodge Ram SRT-10
#0851 2006 Dodge Ram SRT-10 RC SOLD!
#292 of 3057 2004 Dodge Ram SRT-10 SOLD!

THE FORMER BUMP KING

i love the cognac interior of the gen1/gen2 viper. if i could do it to my 10, i would!
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Old 07-21-2014, 08:51 PM
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ok, it appears that the fuel pump relay control comes from the pcm to the ipm where the fuel pump relay is. If you are not getting a fuel pump relay signal, it looks like a pcm.

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Quote:
Originally Posted by KyleB View Post
OMG, I think you're right! You're a genius, we should definitely put you in charge around here.
My YouTube channel:

http://www.youtube.com/channel/UCEsMsFATkTJq3k-BM26PfAg

Follow me on Twitter and Instagram: Andysavakinas



#1357 of 3057 2004 Dodge Ram SRT-10 SOLD!
#2718 of 3057 2004 Dodge Ram SRT-10
#0851 2006 Dodge Ram SRT-10 RC SOLD!
#292 of 3057 2004 Dodge Ram SRT-10 SOLD!

THE FORMER BUMP KING

i love the cognac interior of the gen1/gen2 viper. if i could do it to my 10, i would!
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Old 07-21-2014, 08:56 PM
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I can also get you connector pinouts if need be.
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Quote:
Originally Posted by KyleB View Post
OMG, I think you're right! You're a genius, we should definitely put you in charge around here.
My YouTube channel:

http://www.youtube.com/channel/UCEsMsFATkTJq3k-BM26PfAg

Follow me on Twitter and Instagram: Andysavakinas



#1357 of 3057 2004 Dodge Ram SRT-10 SOLD!
#2718 of 3057 2004 Dodge Ram SRT-10
#0851 2006 Dodge Ram SRT-10 RC SOLD!
#292 of 3057 2004 Dodge Ram SRT-10 SOLD!

THE FORMER BUMP KING

i love the cognac interior of the gen1/gen2 viper. if i could do it to my 10, i would!
Reply With Quote
  #7 (permalink)  
Old 07-21-2014, 08:57 PM
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ZCx ZCx is offline
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RATS???
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Old 07-21-2014, 09:22 PM
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Originally Posted by ZCx View Post
RATS???
Could be that too. There is a fair amount of wiring from the pcm on your passenger side firewall to the ipm in the driver side front of the truck.
__________________
Quote:
Originally Posted by KyleB View Post
OMG, I think you're right! You're a genius, we should definitely put you in charge around here.
My YouTube channel:

http://www.youtube.com/channel/UCEsMsFATkTJq3k-BM26PfAg

Follow me on Twitter and Instagram: Andysavakinas



#1357 of 3057 2004 Dodge Ram SRT-10 SOLD!
#2718 of 3057 2004 Dodge Ram SRT-10
#0851 2006 Dodge Ram SRT-10 RC SOLD!
#292 of 3057 2004 Dodge Ram SRT-10 SOLD!

THE FORMER BUMP KING

i love the cognac interior of the gen1/gen2 viper. if i could do it to my 10, i would!
Reply With Quote
  #9 (permalink)  
Old 07-21-2014, 09:47 PM
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Thanks. I had some concerns because the body shop did some welding in the frame and I don't know if they disconnected the PCM first. Guess I will find out.
__________________
2005 Ram SRT-10 QC. Code Red twin turbo build.
2006 Ram SRT-10 RC. Punisher 4.5L Whipple build.
2006 Saleen Mustang SC-281
2004 Saleen Mustang Extreme-FOR SALE
1999 Ford Mustang Cobra convertible Saleen SA-20 clone
2006 Dodge Charger R/T "Monster SEMA car"
2007 Jeep SRT8 -SOLD
2002 Big Dog Pitbull - SOLD
2005 Saleen Mustang SC-281. Barricade replica-SOLD
2011 Ram Express. Stacey David/Gearz TV Drag-N-Wagon build.
2006 Saleen Mustang Extreme-FOR SALE
2012 Ford FX2 ProCharged
2007 Saleen Mustang SC-281-SOLD
2005 Ram SRT-10 CE #43-SOLD
2005 Ram SRT-10 QC-SOLD
1979 Dodge Lil Red Express
1969 Plymouth Roadrunner
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Old 07-21-2014, 10:01 PM
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yep. replaced several ECM's over the years because guys would not take a couple of extra minutes to disconnect "BOTH" batt. cables.
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