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Unread 06-13-2012, 10:57 AM   #1
mikesavage71
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1989 YJ Wrangler 
 
Join Date: Nov 2010
Location: MIddletown, RI
Posts: 3
Yj won't STOP running

Replaced the carb with weber and got rid of the majority of emissions clutter. Did the nutter bypass and finally removed extra wires not being used. Now when I turn off the key, the engine runs for 10-15 seconds with the key completely out, then sputters and dies? I think I cut the wrong wire but can't find any help with chitons or Haynes books.

1989 yj with 4.2

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Unread 06-13-2012, 12:06 PM   #2
erushing
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1987 YJ Wrangler 
 
Join Date: Nov 2009
Location: texas
Posts: 19
Did you check the timing
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Unread 06-13-2012, 12:07 PM   #3
Que89YJ
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1989 YJ Wrangler 
 
Join Date: Apr 2008
Location: Detroit, Michigan
Posts: 14,812
No you didn't cut the wrong wire. The alternator is backfeeding the coil. You need to add a diode to clamp the voltage.

http://www.jeepforum.com/forum/f12/d...rnator-873928/

http://www.jeepforum.com/forum/f12/9...49/index2.html
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Unread 06-13-2012, 12:22 PM   #4
giggityjeeper
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1990 YJ Wrangler 
 
Join Date: May 2007
Location: British Columbia
Posts: 4,024
count your lucky stars......

most cant get them running........
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Started with some rust repairs ended in a SOA...

http://www.jeepforum.com/forum/f12/h...-jeep-1050879/

family roll bar swap/upgrade..

http://www.jeepforum.com/forum/f12/f...grade-1054753/

1990 YJ. SOA, OME 36R 3.5" lift springs, OME 5/8 greasable shackles, OTT high steer, Custom cage, team Rush, Posi, 33 TSL swampers
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Unread 06-13-2012, 02:06 PM   #5
Que89YJ
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1989 YJ Wrangler 
 
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Location: Detroit, Michigan
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Lol that is funny!
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Unread 06-13-2012, 02:17 PM   #6
MegaCabMan
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1988 YJ Wrangler 
 
Join Date: Apr 2011
Location: Edmond, OK
Posts: 264
mine does the same thing if I don't turn the headlights off befor shutting the engine off. as was said earlyer,it just needs a diode.
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Unread 08-29-2012, 01:28 PM   #7
mikesavage71
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1989 YJ Wrangler 
 
Join Date: Nov 2010
Location: MIddletown, RI
Posts: 3
Would not having the diode result in this weeks completely corroding the ignition coil end of the distributor wire to the point it just fell out? every other end is good, timing is good, plug gap is good, no other corrosion at all.
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Unread 08-29-2012, 07:03 PM   #8
Que89YJ
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1989 YJ Wrangler 
 
Join Date: Apr 2008
Location: Detroit, Michigan
Posts: 14,812
It shouldnt have Mike. Just bad luck on an old electrical system.
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