Random dying and no start uggh. - JeepForum.com
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post #1 of 5 Old 05-07-2007, 08:39 AM Thread Starter
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Location: Golden, CO
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Random dying and no start uggh.

Sorry if this has been discussed prior, didn't get much thru search so hear it goes.

A week ago, packed up my 98zj to go to the airport 3am, started up the truck just fine. I'm heading inside to grab the first kid and I hear the jeep just die. It wouldn't start back up at all. Tried starting over the next few days randomly with no luck then one morning, it starts no problem. It drove fine for a couple of days and then just died while driving. It did restart with some prodding, ran fine for a couple more days and last night it died again.

Anyone ever experience anything like this? I'm *hoping* fuel pump maybe???

Thank you all in advance.

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post #2 of 5 Old 05-11-2007, 09:27 AM
John in MA
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1994 ZJ 
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Location: MA, USA
Posts: 830
Check engine codes, check fuel pressure and sound, and keep going from there.
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post #3 of 5 Old 05-11-2007, 10:22 PM
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Join Date: Mar 2007
Location: chicago
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same for me. i took it to the mechanic the first time and he switched one of my relays. Then it died again like 3 days later. Than he said it was some o2 **** and he fixed it, and its been money for about 3 months now, so i think its ok.
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post #4 of 5 Old 05-12-2007, 12:08 AM
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Location: McKinney, TX
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Check your engine codes first. I would guess the Crankshaft position sensor has gone bad.
If not, check all battery and alternator connections for bad contacts.

Could be the fuel pump though. Have it pressure tested.
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post #5 of 5 Old 05-12-2007, 01:11 PM
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1994 ZJ 
Join Date: Feb 2007
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Sounds similar to my problem that I had a few months back. In my case there were no trouble codes. The fuel filter and fuel pump was changed and I haven't had a problem since. It's been about 700-800 miles.

2009 Red Rock JK Unlimited Rubi
2006 Scion xA
1999 WJ Limited Quadradrive V8
1997 Chevrolet Z71
1994 ZJ Laredo 4.0 - Sold
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