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2007 crd another lift pump wiring question
http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?f=5&t=92540		 Page 1 of 1
Author:  Bowtiecrazz [ Mon Dec 19, 2022 8:20 pm ]
Post subject:  2007 crd another lift pump wiring question
If this has been covered I do apologize. I couldn't find
A thread on it.
I already have the lift pump. Just lost my job and my liberty is pretty much not drivable. Soon as I get around 2000+ rpm my jeep shuts off I can put it in neutral turn the key off and it will fire right back up and continues to do the same thing. And throws a p0093 code. So my question is
Has anyone installed the pump and built there own harness ?
Have the pin out out which wire does what on the pump and the car side. I need to beat the street and find a job so I need this thing running. I can't afford the $200+ for a harness. Not this close to holidays and bill time but I don't have a problem building a harness.
Any help would be greatly appreciated. I'm in a pretty bad spot and lost my company truck.
Author:  WWDiesel [ Mon Dec 19, 2022 10:20 pm ]
Post subject:  Re: 2007 crd another lift pump wiring question
I modified my harness simply by adding two additional wires (14ga wires) and the correct APEX connectors that I got from Mouser Electronics.
See this for instructions:> http://www.auerbach.ca/kj/lift_pump/default.html
You have to have the two APEX wire connectors for the connector on top of the fuel tank module, but under the rear seat you could simply bypass the connector for the power wire. The other wire simply grounds to the body. see drawing

Additional info:
Wire Terminals: Aptiv APEX 2.8 Series Terminals 16 AWG to 14 AWG Bulk Automotive Connectors
male, 14-16 gauge wire
female, 14-16 gauge wire

https://www.mouser.com/Connectors/Automotive-Connectors/APEX-28-Series/

Image
Author:  Bowtiecrazz [ Tue Dec 20, 2022 8:38 pm ]
Post subject:  Re: 2007 crd another lift pump wiring question
Lift pump installed, I have 9 to 10 psi coming out of the fuel pump head. Still does same thing shuts off at 2000ish
Rpms. Turn the key off and then it'll fire right up.
Author:  WWDiesel [ Tue Dec 20, 2022 9:34 pm ]
Post subject:  Re: 2007 crd another lift pump wiring question
Sounds like you are running out of fuel rail pressure?
Do you have any way of monitoring the fuel rail pressure with a scanner?
Several things can cause this, but you have got to know what the rail pressure is doing to properly diagnose it.
Author:  Bowtiecrazz [ Wed Dec 21, 2022 1:10 am ]
Post subject:  Re: 2007 crd another lift pump wiring question
My buddy has a snap on Solus I'll have to grab it tomorrow and see what kind of pressure it has.
Author:  Bowtiecrazz [ Wed Dec 21, 2022 5:47 pm ]
Post subject:  Re: 2007 crd another lift pump wiring question
Idle fuel pressure 6374 psi
1500 rpm 10646 psi
It kind of bounces around a little
Author:  Bowtiecrazz [ Thu Dec 22, 2022 1:15 pm ]
Post subject:  Re: 2007 crd another lift pump wiring question
So I've been doing some research and run across a diagnosis write up by Oregon fuel injection.
On the fuel pressure solenoid if you take the return line aff at the rail there shouldn't be fuel coming out at idle and mine has a steady stream of fuel pouring out of it
Think I'm going to order one and see if it'll fix my p0093 issue.
Author:  TURBO-DIESEL-FREAK [ Mon Dec 26, 2022 9:15 am ]
Post subject:  Re: 2007 crd another lift pump wiring question
Bowtiecrazz wrote:
Idle fuel pressure 6374 psi
1500 rpm 10646 psi
It kind of bounces around a little


You say that it dies at 2000 RPM? Doesn't that mean you have to test to at least 2000 RPM also?
Author:  Bowtiecrazz [ Mon Dec 26, 2022 11:16 pm ]
Post subject:  Re: 2007 crd another lift pump wiring question
Only shuts off when driving. Not free revving
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