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Unread 03-20-2012, 07:38 AM   #1
GeorgiaJK07
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ANOTHER jk not starting thread!

Drove it yesterday started up just fine. go to start it this morning and its got nothing at all. remote key wont even work. its like DEAD DEAD. so i check my fuses clean the connecters on the battery. that didnt work. so i did the whole un connect it and wait for thirty min thing. that did absolutely nothing. took the battery out of my buddys cobra and put it in. it works. but still wont start. when i try and start it i kinda here that ONE click / clunk type noise and then nothing. Im lost on what to do from here on out. its 2007 sahara 4dr 60k miles. bought it used last year and this is my first issue ever with it. ive been reading all over this forum about this issue. please help :'(

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Unread 03-20-2012, 07:46 AM   #2
WXman
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My dealer said there was a flash to fix a problem with a start switch that caused random vehicle no-start condition on some JKs. I wonder if that affects yours too?
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Unread 03-20-2012, 08:09 AM   #3
GeorgiaJK07
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I dunno but im very upset right now. goin on 3 hours late to work. been constintly on here and outside trying to fix it and im having no luck. on another note:

i read somewhere about it building up static electricity and having to touch the postive to the negative. yea that didnt work either. when i turned the switch to the on position the fan came on....???
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Unread 03-20-2012, 09:16 AM   #4
GeorgiaJK07
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alright so after reading pretty much every "jk not starting" thread and trying everything! im back to where i started. completely dead again. so now i have 2 dead batteries. my original one and the one i put in it from my buddies mustang.
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Unread 03-20-2012, 09:18 AM   #5
terrahawk
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How did you kill the battery from the Mustang?
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Unread 03-20-2012, 09:25 AM   #6
LIJeepJC
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Quote:
Originally Posted by GeorgiaJK07 View Post
alright so after reading pretty much every "jk not starting" thread and trying everything! im back to where i started. completely dead again. so now i have 2 dead batteries. my original one and the one i put in it from my buddies mustang.
Considering that there are 60k on the clock, ever think the starter took a crap? I'd try that first.
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Unread 03-20-2012, 09:28 AM   #7
propped1
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I've been having this issue. Sometimes (most of the time) starts right up. Sometimes you turn the key and it does a quick fire like the computer told the starter to go but it didnt turn it over. Cycling the key gets it to start (usually the second try) and when it doesnt, a quick press on the gas does it but it revs it to like 4 grand when I just feathered it. Embarrassing in a parking lot

There is a fix for this?
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Unread 03-20-2012, 09:30 AM   #8
propped1
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Quote:
Originally Posted by GeorgiaJK07 View Post
Drove it yesterday started up just fine. go to start it this morning and its got nothing at all. remote key wont even work. its like DEAD DEAD. so i check my fuses clean the connecters on the battery. that didnt work. so i did the whole un connect it and wait for thirty min thing. that did absolutely nothing. took the battery out of my buddys cobra and put it in. it works. but still wont start. when i try and start it i kinda here that ONE click / clunk type noise and then nothing. Im lost on what to do from here on out. its 2007 sahara 4dr 60k miles. bought it used last year and this is my first issue ever with it. ive been reading all over this forum about this issue. please help :'(
Yours sounds like an alternator issue if you are able to start and then you are killing batteries... there is no charge going on.
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Unread 03-20-2012, 09:33 AM   #9
PhatJK
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I am confused by the OP. So did the original battery died? Did you crank it until it ran out of juice? Did you clean the battery connector with sand paper or just wipe it down? Sand paper gets rid of the oxidation and helps with the contact. After that you should put on some dieletric grease to slow down the oxidation.

The Cobra battery, did that battery die too? Same question, did it die while you crank or did the battery drained off when you left it overnight? Usually, the click-click sound is from the starter solenoid. You usually hear that when the connection to the battery is poor and there isn't electrical current driving the starter.
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Unread 03-20-2012, 10:54 AM   #10
GeorgiaJK07
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ok ill try and explain it more simply. this morning the first time i went to start it i had nothing. no power, no lights, not a dadgum thing at all. so i checked all my fuses ( which are all good ) cleaned the battery with a battery wire brush ( and i always keep the grease on there to keep from corrosion ) then re connected everything. still nothing at all.

THEN i put the mustang battery in the jeep and i had power. everything worked. lights radio, locks, windows. etc. but it still wouldnt start. played with the transmission a little bit andtried starting it in neutral. didnt work. before ive had the problem with having to push it up further into park and it would start but now its just not doing anything.

the mustang battery ended up dying somehow over about a hour of being in the jeep. and then a friend of mine tried to jump it off and now its got power again but still didnt start even with a jump

Battery, esp/bas, seatbelt, trac control, and my engine light are all lit up when its on. i dont know what else to do. im trying to avoid the dealship cause they will rip me off just bc they know new marines in this town will pay no matter how much it is. which im not a new marine and im not dumb enough to pay a ridiculous amount of money for a easy fix.
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Unread 03-20-2012, 11:03 AM   #11
ncb
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When you say it won't start does the starter rotate and the engine won't fire, or you have zero starter rotation?
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Unread 03-20-2012, 11:20 AM   #12
LIJeepJC
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Quote:
Originally Posted by propped1 View Post
I've been having this issue. Sometimes (most of the time) starts right up. Sometimes you turn the key and it does a quick fire like the computer told the starter to go but it didnt turn it over. Cycling the key gets it to start (usually the second try) and when it doesnt, a quick press on the gas does it but it revs it to like 4 grand when I just feathered it. Embarrassing in a parking lot

There is a fix for this?
I don't know much about the new starters, but back in the day this would indicate that the solenoid is bad. We used to rap on it with a screw driver while trying to start it and it usually woke it up. Not sure if it's a computer issue, or alternator because the alt kicks in after the truck has started. The alternator is not part of the primary electrical system and that you don't need it to initially start the engine.
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Unread 03-20-2012, 11:38 AM   #13
GeorgiaJK07
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yea ive tried tapping on it while starting. but when i try and start it i get nothing. no clicks like as if the battery were dead or anything. but now this mustang battery is dead so now i have nothing at all. the warranty on my original "autocraft silver"(from advanced auto parts ) battery is still in play till next month so later if i can get a ride out that way im gonna go take it in and hopefully leave with a new one. but i still dont see that fixing the issue.
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Unread 03-20-2012, 12:22 PM   #14
LVCapo
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I've got an 07 JK with a very similoar issue....I'm on my 4th battery in 8 months (one stock Mopar and three yellow top Optimas).
If the Jeep sits for a couple day without running I'll just get clicking when I turn the key. I've tested the battery terminals with the engine off after driving (12.5V) and when the engine is running (14.2V), so I dont believe its the alternator...there i something slowly draining the battery. I think Jeep kows about this because even my dealer said that you HAVE to start and run the jeep at least once a week for the batteries sake. I'm personally kind of pissed about the issue as the dealer has had the Jeep overnight twice now for this issue and promised it was fixed.
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Unread 03-20-2012, 01:23 PM   #15
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Just an FYI:

NUMBER: 08-007-08 REV. A
GROUP: Electrical
DATE: July 04, 2008

SUBJECT:
No Engine Crank Or No Engine Start Due To Electronic Lockup Of The WCM / SKREEM
OVERVIEW:
This bulletin involves the replacement of the Wireless Control Module (WCM), and if
equipped, the replacement of the Electric Steering Column Lock (ELV). The WCM is also referred to as the Sentry Key Remote Entry Module (SKREEM).
MODELS:
2007 - 2008 (JK) Wrangler
2008 (KK) Liberty/Cherokee
2007 - 2008 (MK) Compass/Patriot
NOTE: This bulletin applies to vehicles built on or before May 05, 2008 (MDH
0505XX).
SYMPTOM/CONDITION:
The customer will experience a no engine crank AND a no engine start condition. Also, the remote keyless entry (RKE) system will not operate. This condition may be due to an electrostatic discharge (ESD) from the ignition key into the Wireless Control Module
(WCM), causing the WCM to electronically lockup. This condition may occur more
frequently in dry and/or cold weather conditions where a sufficient electrostatic charge is
more easily produced. This condition is corrected by the replacement of the WCM.
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