4.0l xj 97 motor into yj 87 - Page 2 - JeepForum.com
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post #16 of 252 Old 08-28-2013, 12:27 PM
Que89YJ
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You want a pic of my 89 bulkhead?

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post #17 of 252 Old 08-28-2013, 01:12 PM
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post #18 of 252 Old 08-29-2013, 10:50 AM Thread Starter
lbsickboy
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Quote:
Originally Posted by Que89YJ View Post
You beat me to it 94! The production in Europe lagged the us so he might have a 96. A ECU pic would help to make sure. The 96 through 98 had many rolling changes.
Sorry i missed your request of a ecu photo that i have.
Also i managed to get all the wires sorted and named on paper yesterday evening, the only thing im not 100% about is which wires i need to get this baby going.

I know the obvious ones, for instance the head lamps and A/C wires i dont need.
i also found out that the oil pressure sensor runs threw the ecu and not direct to the gauge on the dash,
so im thinking of just tapping into the yellow gray wire on the xj and connecting that to the yj wire light green feed, then also keep the wire running to the ecu.


also im not planning on pulling all the wires out of the xj harness as it looks clean as is.
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post #19 of 252 Old 08-29-2013, 03:34 PM Thread Starter
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At last im finally done with the wiring man 3 days on the go puffff,
if it wasn't for VARNISH and his epic journey into the OBD2 then i would of be op the creek with out a paddle.

link to Varnish topic with the info we i had put together with his help emails & pms
sorry don't want you guys to think my head stuck up varnishes back side, but im so fxxxing happy at the moment.

thanks varnish


http://www.jeepforum.com/forum/f11/p.../#post15850704

Any one else needing the FSM for the jeep yj cj xj ....... then you can go here,
they cost like $8


http://www.tradebit.com/DL/T130827024436-171e6.

ive got the xj 1997 obd2 zo if any ones needs it give me a shout i can mail it to you.
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post #20 of 252 Old 08-29-2013, 03:35 PM
Que89YJ
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Is it running?
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post #21 of 252 Old 08-29-2013, 03:35 PM Thread Starter
lbsickboy
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also thanks to Que89YJ
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post #22 of 252 Old 08-29-2013, 03:37 PM Thread Starter
lbsickboy
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Quote:
Originally Posted by lbsickboy View Post
also thanks to Que89YJ
im quick but not that quick, im going to get into it tomorrow when its running ill shoot a vid ok
im just glad i found the right people to help me sort things out.
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post #23 of 252 Old 08-29-2013, 04:08 PM
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Quote:
Originally Posted by lbsickboy View Post
i also found out that the oil pressure sensor runs threw the ecu and not direct to the gauge on the dash,
For both the '94 and '00 XJ motors I have swapped, I used the sender out of the original CJ/YJ and didn't use the XJ one. I'm not sure about a '97, but I bet it is similar to the '00 in design and the XJ gauges are completely data driven from the computer so it isn't that the computer requires the oil pressure information, it just passes it to the XJ gauge cluster - which you don't have.

If you have two temperature sending units in the '97, the one at the thermostat housing is required by the computer and the one at the back of the head is for the gauge, put the YJ sensor in the back of the head and keep that wiring from the YJ. My '00 didn't have that back sensor so I had to drill and tap a new hole in the thermostat housing to run my CJ sensor into.

'98 TJ, '06 LJ, '88 YJ, '86 CJ, '99 XJ 4dr SE
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post #24 of 252 Old 08-29-2013, 04:45 PM Thread Starter
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ok mine xj 97 motor dosent have the temp sense at the back, only on the front. so i will have to drill one like you said and use the yj temp sensor on the gauge.
thanks for that.
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post #25 of 252 Old 08-29-2013, 05:01 PM
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Be careful, it was very difficult to find a spot in that thermostat housing and drilling and tapping the aluminum was sketchy business. It would be safer to put something in-line with a radiator or heater hose or something as an alternative.

'98 TJ, '06 LJ, '88 YJ, '86 CJ, '99 XJ 4dr SE
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post #26 of 252 Old 09-02-2013, 09:44 AM
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I'm also documenting an early OBDII swap into an '86 CJ over on the CJ forum. Maybe there's some info there that could help you out...

http://www.jeepforum.com/forum/f8/california-4-0-obdii-swap-1530716/


Also, here's where I downloaded the '99 XJ FSM.
http://colorado4wheel.com/manuals/Jeep/XJ/
That FSM applies to '97-99.
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post #27 of 252 Old 09-03-2013, 07:11 AM
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You need to post up to your thread here lbsickboy.

Quote:
Originally Posted by lbsickboy View Post
Hi
Im have the OBD2 set up to , it came of my xj 97 i have every thing i need but i just not to sure which way and what to connect,
here is a link on how far i am, check my signature links.
im in desprate state cant get the jeep to turn over
all my wiring is ready and labeled both xj and yj.
If it is all setup correctly and not turning over the first thing to try is to see if you can turn it over by jumpering the starter relay. Look in the PDC. On the starter relay jumper pins 30 to 87 with a short section of wire and the starter should turn over just like you are turning the key. Post back what happens. The AW4 is an automatic trans and has a nuetral saftey switch that must be wired in or bypassed for the ecu to allow it to start. The other issue could be the security disable.
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post #28 of 252 Old 09-03-2013, 09:52 AM Thread Starter
lbsickboy
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Quote:
Originally Posted by SLO_Ken View Post
I'm also documenting an early OBDII swap into an '86 CJ over on the CJ forum. Maybe there's some info there that could help you out...

http://www.jeepforum.com/forum/f8/california-4-0-obdii-swap-1530716/


Also, here's where I downloaded the '99 XJ FSM.
http://colorado4wheel.com/manuals/Jeep/XJ/
That FSM applies to '97-99.

Thanks for that i will look into it might just help.


Quote:
Originally Posted by Que89YJ View Post
You need to post up to your thread here lbsickboy.



If it is all setup correctly and not turning over the first thing to try is to see if you can turn it over by jumpering the starter relay. Look in the PDC. On the starter relay jumper pins 30 to 87 with a short section of wire and the starter should turn over just like you are turning the key. Post back what happens. The AW4 is an automatic trans and has a nuetral saftey switch that must be wired in or bypassed for the ecu to allow it to start. The other issue could be the security disable.
Its not even hooked up yet, ive bean so busy trying to sifer all the circuits out the fsm,. and have bean posting up on this thread,

http://www.jeepforum.com/forum/f11/p...rness-1502423/

because Varnish had the OBD2 set up in his cj and happened to have a thread on the obd2 system, well i should say questions about it.
anyway i started posting there with all my info on what i have done up to now.

so like you asked post op to my thread. sorry i didn't do that early-er


97 xj obd2 system





This is what all my wires are circuit first and then functions



.

This is what i have left over of what i think is needed to hook this baby up,
(note) V6 is a wire that is also connected to the engine bay wire harness




Then I've also got these 2 connectors that go to the junction box C1 & C2

Will i be needing any of these wires, they are attached to the engine pay wiring harness?




The junction box with the connectors in place. but junction box im dont want to use it.



The junction box circuit with function



C4 Connector from underdash harness to junction box




JEEP YJ 87 Bulkhead connector.



i just hope some one can help me uit here please

http://www.jeepforum.com/forum/f12/4-0l-xj-97-motor-into-yj-87-a-1567705/
WANGLER 87 4.0 HO AW4
4,5 " ROUGH COUNTRY LIFT KIT, 1.5" BOOMERANG SHACKLES, 33'' BANDEN, ROUGH COUNTRY DUAL STEERING STABILIZER
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post #29 of 252 Old 09-03-2013, 09:58 AM Thread Starter
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Also to solve my fuel pressure regulator problem i was planning on getting this,

http://www.aliexpress.com/item/Fuel-...469863362.html

oh and this is a link to how i uesd the 97 jx fuel pump converted it to fit in the stock jeep yj 4.2L tank 20 gallon.

http://www.jeepforum.nl/topic/26783-...p/#entry306751

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http://www.jeepforum.com/forum/f12/4-0l-xj-97-motor-into-yj-87-a-1567705/
WANGLER 87 4.0 HO AW4
4,5 " ROUGH COUNTRY LIFT KIT, 1.5" BOOMERANG SHACKLES, 33'' BANDEN, ROUGH COUNTRY DUAL STEERING STABILIZER
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post #30 of 252 Old 09-03-2013, 12:43 PM Thread Starter
lbsickboy
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pink and black wire A2 12PK/BK if im right then i need this to go to orange wire on the yj ???
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http://www.jeepforum.com/forum/f12/4-0l-xj-97-motor-into-yj-87-a-1567705/
WANGLER 87 4.0 HO AW4
4,5 " ROUGH COUNTRY LIFT KIT, 1.5" BOOMERANG SHACKLES, 33'' BANDEN, ROUGH COUNTRY DUAL STEERING STABILIZER
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