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Go Back JeepForum.com > Models > Jeep Wrangler Forums > YJ Wrangler Technical Forum > Doing 4.0 Swap Now..... Need Help Now !!!

Building a Bumper?Ruffstuff Axle Simple Swap Kit!~Artec JK 1 TON SWAP~

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Unread 01-16-2010, 06:23 AM   #46
dodger889
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1989 YJ Wrangler 
 
Join Date: Jan 2009
Location: mi
Posts: 4,162
Ok quit using block diagrams I have posted the wires that need to be connected to get you started. If you noticed there are only 4 wires that you need. Have you tied the PDC to the battery? There is a heavy gauge ( 1 or 2 gauge wire that connects the battery to the PDC that is what you power the rest of the jeep except for the starter.

Please post a picture of what you are doing this is getting very confusing .

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A 89 yj with a 4.0 aw4 sye out of an 92xj. Now the hard part is done time to get it up in the air just a bit. Working on 8.8 with 3.73 and lsd for the rear. and new D30 hp with 3.73 .
For those who have not figured this out I'm old school but can handle the new too.
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Originally Posted by bigsquat View Post
im just cheap, and cheap makes you creative.
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Unread 01-16-2010, 06:28 AM   #47
dodger889
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1989 YJ Wrangler 
 
Join Date: Jan 2009
Location: mi
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Dude you will not get power to the coil untill you are turning the motor over . You are not understanding how the ECM works. Do you understand the ECM takes the control to GROUND means? If I can get my cam to work I will post some pictures for you today.
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A 89 yj with a 4.0 aw4 sye out of an 92xj. Now the hard part is done time to get it up in the air just a bit. Working on 8.8 with 3.73 and lsd for the rear. and new D30 hp with 3.73 .
For those who have not figured this out I'm old school but can handle the new too.
Quote:
Originally Posted by bigsquat View Post
im just cheap, and cheap makes you creative.
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Unread 01-16-2010, 08:29 AM   #48
cevans87
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1992 XJ Cherokee 
 
Join Date: Nov 2008
Location: , North Carolina
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i'll take some pictures today, and i understand that i won't have it untill it until it is being turned over, but thats just it when i go to start... i have nothing at the coil , thats why i was going to put the coil on a switched 12v source...

still wondering about fuel pump wiring
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Unread 01-16-2010, 08:37 AM   #49
dodger889
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1989 YJ Wrangler 
 
Join Date: Jan 2009
Location: mi
Posts: 4,162
Have you even looked at the wiring diagram that I sent you??
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A 89 yj with a 4.0 aw4 sye out of an 92xj. Now the hard part is done time to get it up in the air just a bit. Working on 8.8 with 3.73 and lsd for the rear. and new D30 hp with 3.73 .
For those who have not figured this out I'm old school but can handle the new too.
Quote:
Originally Posted by bigsquat View Post
im just cheap, and cheap makes you creative.
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Unread 01-16-2010, 10:31 AM   #50
jsawduste
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2006 YJ Wrangler 
 
Join Date: Jul 2006
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Dodger is correct. The ECM looks for a crank signal. If it does not see one it shuts down power to the coil and fuel pump. If you look you will see that one of the coil wires ties into the main splice (green/red on a YJ) that goes to the ASD and the operating sensors. In fact you can trace that wire back to the coil from any of the injectors. It is common with all of them.
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Unread 01-16-2010, 11:48 AM   #51
cevans87
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1992 XJ Cherokee 
 
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thanks guys... i talked with dodger on the phone for about an hour and we got it figured out.

now the porblem is with the fuel system...

dodger explained to me that using the stock fuel pump externally is not a good idea as it will burn up, and the junkyards are closed today.

does anyone kow of a setup i can use...

i need a self regulated external pump capable of 45psi

anyone know where i can get one
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Unread 01-16-2010, 11:56 AM   #52
YJBlues
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1991 YJ Wrangler 
 
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Location: Cleveland Ohio
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pretty sure NAPA or somewhere similar would have an inline fuel pump.
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Unread 01-16-2010, 12:29 PM   #53
jsawduste
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Quote:
Originally Posted by cevans87 View Post
thanks guys... i talked with dodger on the phone for about an hour and we got it figured out.

now the porblem is with the fuel system...

dodger explained to me that using the stock fuel pump externally is not a good idea as it will burn up, and the junkyards are closed today.

does anyone kow of a setup i can use...

i need a self regulated external pump capable of 45psi

anyone know where i can get one
Dodger is right on the money about using an internal pump externally.

FWIW I used a Mustang V8 internal pump. A couple small mods to the mount inside the tank is all it took to mount it. Now I have 50 some lbs. if needed and plenty of flow. Maybe you could do this ??
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Unread 01-16-2010, 02:30 PM   #54
cevans87
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jsawduste what year mustang and what did you have to do... anything to help me out at this point
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Unread 01-16-2010, 02:50 PM   #55
jsawduste
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Late model GT/Mach 1. Had to shorten the rubber hose. Solder in a ground wire and add a hose clamp to hold it all together. 15 minutes worth of work, tops. Advance Auto

$45-50 IIRC
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Unread 01-16-2010, 03:05 PM   #56
cevans87
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you got the whole thing ?
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Unread 01-16-2010, 03:23 PM   #57
jsawduste
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Quote:
Originally Posted by cevans87 View Post
you got the whole thing ?
Just the pump
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Unread 01-16-2010, 03:57 PM   #58
cevans87
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if i buy a pump and sending unit will i fit right up in my stock tank ?
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Unread 01-16-2010, 03:59 PM   #59
cevans87
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jsawduste...advance wants 289 for just the pump for a 2003 mustang gt
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Unread 01-16-2010, 04:45 PM   #60
jsawduste
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Quote:
Originally Posted by cevans87 View Post
jsawduste...advance wants 289 for just the pump for a 2003 mustang gt
Dayum, all you need is the pump itself. No sender. You will use the stock sender with no worries.

Link,
http://shop.advanceautoparts.com/webapp/wcs/stores/servlet/product_Electric-Fuel-Pumps-Univ-Airtex_3141314-P_N3339K_P|GRP2030P____

http://shop.advanceautoparts.com/webapp/wcs/stores/servlet/product_Electric-Fuel-Pumps-Univ-Airtex_3141403-P_N3339K_P|GRP2030P____

Have them check the flow rates. They DO have a spec chart. Pick the higher of the 2
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