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Unread 09-23-2013, 12:24 PM   #1
scrambled
Registered User
2006 LJ Wrangler 
 
Join Date: Aug 2010
Location: myrtle beach, sc
Posts: 304
issue with starting

The other week I didn't drive the Grand for about two days. I did however move it in my driveway. I went to start it the next day and it was completely dead, no electronics worked or anything. No lights or anything was left on. I couldn't get it jumped with my wrangler with an optima. It sat while I was on vacation. I jumped it today and it starts and runs as long as you are on the gas. Once you let up it dies and wont start.

It happened so quick I am confused. Do you guys think its the battery, alternator or something else? I had both tested about 5 months ago.

I was having a problem with my auto headlights coming on randomly with no key in the WJ and it being locked for an hour or so. I have no idea if this is an electrical gremlin or something else. I also don't know if this is related. I am getting no codes, or warnings.

Any ideas? A huge thanks in advance.

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2014 JKU Rubicon X-2002 Grand Cherokee Limited
Past: 2003 TJ Rubicon, 2006 LJ Rubicon Rubitrux
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Unread 09-23-2013, 12:35 PM   #2
MattJeep
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2003 WJ 
 
Join Date: Apr 2010
Location: Manteno, IL
Posts: 1,166
Check battery connections. Clean and/or replace. Replace battery if suspect.
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Unread 09-24-2013, 05:05 PM   #3
scrambled
Registered User
2006 LJ Wrangler 
 
Join Date: Aug 2010
Location: myrtle beach, sc
Posts: 304
connections are good, I need to check the battery.
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Unread 09-24-2013, 10:41 PM   #4
miami5th
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2001 WJ 
 
Join Date: Jan 2013
Location: jackson, MI
Posts: 164
man I was chasing down strange electrical and no-start no crank no power nothing type issues for several months. Turned to be really bad battery cable connections and a crappy battery that was supposedly purchased last winter. I re-did the cable ends/adapters and I no longer have those sporadic no start/electrical problems.
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Unread 09-24-2013, 11:23 PM   #5
nolimitssjca
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1999 WJ 
 
Join Date: Sep 2013
Location: San Jose, CA
Posts: 177
A loose or poorly connected battery is harder to diagnose than you might think. Frequently that negative can be on the post and appear tight, but there really isn't a connection. You may see dome lights come on but not have enough power to start it.

Clean the terminals then spray on some terminal lubricant. Lay the foundation to assure you have good connection. Then move on to the next trouble shooting step.
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Unread 09-25-2013, 12:42 PM   #6
new2site
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2002 WJ 
 
Join Date: Jan 2012
Location: Orange county, CA
Posts: 783
If your WJ Limited has the 4.0 take the battery out of your Wrangler and try it out in WJ.

(**Make sure your Wrangler battery isn't on the tall side....or if it is...don't shut the hood on the WJ...the WJ's have barely any space between the battery terminals and the hood..don't want you to dent your hood....seen it done before.)

The PCM's are sensitive in the WJ's ..if the battery isn't spot-on with a full charge they'll do what yours is doing - start up but run sputtery...mine did it ...battery wasn't that low....replaced battery > problem solved!
Low voltage causes a glitch in the PCM on that individual startup...if you reset the PCM and get it to start up next time it might start/run fine...until next episode.

Your battery's resting voltage should be 12.6 or higher.
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Unread 09-27-2013, 12:13 PM   #7
new2site
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2002 WJ 
 
Join Date: Jan 2012
Location: Orange county, CA
Posts: 783
Status? Update?
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