4.2L Fuel Injection and Build - Page 31 - JeepForum.com
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post #451 of 612 Old 06-11-2012, 04:41 PM
meangreeny
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1992 YJ Wrangler 
 
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My main harness is still yj so no security wires to be worried about, but could it be possible that the automatic flywheel fires 180 degrees off from the standard flywheel because my ditributor was never removed but perhaps moving the plug wires could be the difference maker. I will definately have to check for spark tonight when i get home. I just assumed that with rotation and fuel i must have no spark but maybe its just on the wrong fire per plug.

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post #452 of 612 Old 06-11-2012, 07:08 PM
Que89YJ
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As long as the vss wires are not connected or grounded you are fine. You can make the 2 wire work but it is not necessary to start. What about the other things?
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post #453 of 612 Old 06-12-2012, 09:08 PM Thread Starter
cevans87
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Meangreeny, call me tommrow after 5 and ill get u running...4345820148

Built Not Bought #447, 1992 Jeep XJ Supercharged 4.7, 1988 Jeep YJ Auto 4.2L, 2008 Commander Limited HEMI, 1990 Jeep YJ 4.7L Fuel Injected AW4, 1981 Scrambler 304 Auto

I Am The Jeep Surgeon!!!
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post #454 of 612 Old 06-13-2012, 02:55 PM
remmons
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Originally Posted by cevans87 View Post
Meangreeny, call me tommrow after 5 and ill get u running...4345820148
Now THIS is dedication, and a good friend!

Robert.

2015 Cherokee Trailhawk V6.
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post #455 of 612 Old 06-13-2012, 02:57 PM
remmons
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Originally Posted by Que89YJ View Post
As long as the vss wires are not connected or grounded you are fine. You can make the 2 wire work but it is not necessary to start. What about the other things?
I have never gotten around to hooking mine up. I figured that since my YJ was running good that I didn't need them. Maybe in the future I will get around to it.

Robert.

2015 Cherokee Trailhawk V6.
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post #456 of 612 Old 06-13-2012, 03:58 PM
Que89YJ
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The worry is just shorting. It will rail the power low and not throw a code.
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post #457 of 612 Old 06-28-2012, 09:43 PM
lostnorweegian
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hey. I just did this same swap in my 76cj. hooked up the 5 for fire and all my sensors and now i have no spark my harness is out of a 93 wrangler and not 100% complete so i dont know for shure if its out of an automatic or not. could the neutral safety switch be my problem?
i measured and i have 12V to my coil when ignition is on and i can hear my fuel pump run but no spark. any ideas on how to make it work?
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post #458 of 612 Old 06-29-2012, 06:06 AM
Que89YJ
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Hey lost, if you can post up to a new thread. Did you swap the flywheel to the 93 when you did it? The flywheel from the 93 is needed to trigger the crank sensor.
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post #459 of 612 Old 06-29-2012, 07:16 AM
dieselcolt44
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Double check your crank sensor
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post #460 of 612 Old 06-29-2012, 10:06 AM
lostnorweegian
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Sorry, il start a new thread.
And i have the hesco harmonic balancer.
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post #461 of 612 Old 07-03-2012, 08:23 AM
glenbjackson19
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Quote:
Originally Posted by cevans87 View Post
Hope this helps...

Leave the 4.2 Hanress in the vehicle, put the 4.0 harness in and lay it on top of the 4.2 harness...

connect your five wires for fire from the 4.0 harness to the 4.2 harness/bulkhead connector

and your done
Ok cevans87 i wanna do a push button start and have a on/off switch in my lockable console.... no top!!! my question is if i connect all the 4 wires(except starter) to battery positive with on/off switch will it run??? than to start it i'll skip the starter relay but hook starter wire to a push button to battery positive, is this ok? i know it will work already done it but is it messing with computer?? with the no signal from starter relay at initial start up?
dont wanna fry my computer.
ANYBODY's help would be greatly appreciated. and i hope this isn't hijacking the thread it seems relevant.
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post #462 of 612 Old 07-03-2012, 09:16 PM
glenbjackson19
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ok nvm figured it out:
-to "turn computer on": just connect "E4 ignition switch feed" and "B6 ignition start/run" together through a double pole throw switch.
--to run fuel pump: use other pole of switch and connect 12v to fuel pump.
---lastly to start: give 12v power to starter solenoid through a push button.
and as for fuses im not an expert.... but im sure you need them, just not sure if its a MUST.
Thanks cevans87 for starting this thread and thanks to others also for your input. together you guys got me through this.
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post #463 of 612 Old 07-10-2012, 10:29 PM
wrangin_myNeck
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Quote:
Originally Posted by cevans87 View Post
The relay is that easy.... Just run a wire from the 8 gage black wire w/ white stripe to starter solinoid... Connect starter wire at bulkead to trip relay and poof , its magic
I don't want to keep dragging this question out but the wiring is the last part of my swap, and I'm close to getting started on it.

I'm going to bypass the relay, and run a wire from the alternator to solenoid. Then I need the starter wire (hot while cranking only?) to the trip relay (not sure what relay this is) can anyone help out with this?
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post #464 of 612 Old 07-21-2012, 11:30 PM
meangreeny
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been a little busy lately but am happy to say the yj runs exellent with a fully operational aw4. A bit shout out to cevans for taking the time to take my phone call and helping me source the last few wire hookups i needed. This guy goes above and beyond and is a shining example of a true jeeper and forum friend.
thanks again and cevans the pics of the xj console mod is coming soon
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post #465 of 612 Old 07-27-2012, 10:30 AM
aggiejon
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x2 on meangreeny's comments. Got mine running this morning. Wow, what a great feeling. Now to get the loom all nice and pretty again and tie up all those loose ends!
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