jeep blows 30 amp fuse under hood when starting - Page 2 -

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post #16 of 19 Old 11-14-2008, 02:53 PM
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1997 XJ Cherokee 
Join Date: Mar 2008
Location: Indianapolis
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Taters, what was the problem with the computer? I am having the exact problem and I think that is the culprit. Would it just be easier to buy another computer?


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post #17 of 19 Old 05-21-2010, 11:18 AM
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Location: florida
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help i havv same problem

ihave the same problem,what part did u have to replace in computer?
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post #18 of 19 Old 08-06-2012, 03:55 PM
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Join Date: Nov 2011
Location: Norfolk
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Old post but I am now having this problem... What is the culprit???
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post #19 of 19 Old 07-11-2013, 10:33 AM
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1996 XJ Cherokee 
Join Date: Jul 2013
Location: Pataskala
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Had the same issue. I am new to Jeeps, being an old Ford guy so I made a dumb mistake. I have just finished working on my XJ doing lots of mods and maintenance. One of the things I did was remove the interior to fix some holes on the floor and bed line it. During this procedure I removed the seat belts, no big deal right? Put everything back together, drove it a week or so, then one day, boom; she shuts down. No spark, no start. I troubleshoot everything, got the familiar CPS, coil, etc. found that the ASD relay 30A fuse is blown. The culprit? There is a plastic bracket behind the transfer case that holds the O2 sensor. It is held to the SEAT BELT bolt with a speed nut! When I removed the seat belts, I inadvertently disconnected this bracket. The O2 sensor wires were draped over the slip yoke and the insulation had worn through causing a short and blowing the fuse. Fixed the wires, put the bracket back in place, replaced the fuse and hit the road.
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