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Topic Review (Newest First)
12-06-2013 04:30 AM
TonyJK UPDATE!!! I am not sure anyone is following this thread any longer. No replies in a while. But I had to have my JK towed to the local dealer. Since I just got this thing and didn't even make a payment yet it was covered under the 30 day warranty. But they replaced the WCM module thinking that was the issue. NO.. It was a wire that went from the WCM to the fuse block. It was in the main harness and showed power at the block, but not at the WCM. So the tech replaced the wire cutting it at the WCM and block and running a new one. This was a smart idea since a new main harness would have been huge $$$... I picked it up last night and so far so good. I hope this was the issue. One bad wire=$500 dealer bill.
11-30-2013 11:37 AM
TonyJK I have this issue and am stuck. I can't get this thing to start at all. It will start with the remote start, but as soon as you put the key in it shuts off. I pulled the batt terminals off, pulled the WCM fuse, and even did the neutral thing, NOTHING WORKS. I can't get it started to get it to the shop.. HELP..
10-22-2013 11:50 AM
SeaLevelJeeper There was a post on here a few days ago under "Jeep Wouldn’t Turn Over" by Puddlesplasher.
I just bought my new to me 07 JKU 85K Miles Automatic about 3 months ago. The Jeep hasn’t started a few times and it began this frustrating No Crank about a month ago. Had to take the wifes SUV this morning to work.
I was going to head to the dealership on this issue (if I got the Jeep started), but heck, after all this feedback I’ve gotten, the dealership is just going to charge me for labor and new parts that won’t work.
People have replaced and done the following mostly with no luck:
replaced the WCM,
PCM
TPM, TIPM module,
new keys,
(NSS) Neutral Selector switch,
wiring harness,
gear selector sensor,
obviously people have changed the battery
Also noted: original bulletin from Chrysler stating there are problems with these chips and it causes a no crank engine. - So is this free???
Put it in Neutral then starts – Seems to be the best (albeit temporary) fix. Hoping this also works for an automatic. I'll try it when I get home, but we all know its going to start right up tonight...
Some Jeepers have even gotten their Jeeps replaced (according to this post)
Is there a new solution to this problem? This seems to be a very commone issue & I would love to hear any feedback. I don’t have the money to be a test subject at the Chrysler Dealership.
Thanks to Blastek for advising of this possible issue(s) and opening up a can of worms!
09-17-2013 06:20 PM
93wrangler Literally my jeep did this nonsense to me this weekend. I ended up pulling the battery, having it tested (came out fine), scrubbed the terminals, put it back in and she started first try. Today it had a 3-4 second crank time which feels like an eternity when leaving for work at 5am. Going to remember all these tips next time it does this. BTW do I have to do it all with my left foot out the window or is that just for good luck? lol.
09-10-2013 11:49 AM
Timecloud Its been a while since I posted to this thread. I'm still having the issue but very infrequent now. All I do is push up on the gear shifter or drop it into neutral and it starts every time. Leads me to believe the NSS is at fault. There is an adjustment screw on the side side of the console but seems like it needs a little more than I can adjust. For the price of repair, the fix is just fine. I just tell the shop what to do if it doesn't crank for them.
02-26-2013 02:06 PM
Dana101
Udate

Hey guys,

UPDATE: I'm actually selling my jeep this week. I pulled all my paperwork and found my TBS report for the no engine crank on CHRYSLER LETTERHEAD and wanted to say for anyone curious or for anyone who wants to read it please email me at dana.moore@mac.com

I will gladly send you a scanned copy. A few of you reached out to me on this site and I didn't know until today when I logged in and saw your messages. I apologize.

I don't see where I can attach documents to this forum, so please email me directly and I'll respond ASAP. I'm scanning the report now and I will have it as file ready to attach once you email me.

I have a 2007 Jeep Wrangler Sahara Unlimited. It was my dream transportation.
I purchased the jeep in July of 2011 and since then I have:

Needed a new gas tank (it would spit up gas after fueling)
My hard top leaks, not bad, but it leaks...
NO ENGINE START which was fixed by replacing the WCM chip (If you don't believe me I'll email this report to you)

And finally - 2 days before my warranty was up, I needed a transmission. The jeep is only 6 years old and I use it for work and weekend driving, it is barely used.

I'm done and leaving the jeep club.
I still think Jeeps are great, and in a few years I will eventually get a used 2 door wrangler for fun, but as my main source of transportation... It just didn't work out.
Maybe if I had bought a new one things would have been better? I don't know.

Again, I am more than happy to send you my service bulletin.
I have no idea WHY this wasn't a recall nor WHY nobody who works for JEEP seems to know about this. I fixed this chip a year ago and never had another no crank problem.
Its a bad chip and for whatever reason the car thinks it is being stolen (or something) and won't start. That is why if you unlock doors again or put it in neutral it will work.
It has something to do with the security.

Please email me at dana.moore@mac.com
I will respond quickly-

Thanks and good luck!

Dana
10-25-2012 03:13 PM
dawnwest66 Hello. I'm posting here as well as another forum, to see if you folks can help me. Many of these starter issues sound like my situation.

I have a 2007 Wrangler JK, excellent condition have only had it for 2 months, and it's been in the shop 4 times for this starting problem, or LACK of starting.

Initially, they replaced starter, great.
Then they replaced Battery Connection Wires.
Then they did nothing.
Then they told me I was a lunatic because they couldn't make it NOT start.

The vehicle is an automatic.

When I start it (and it starts) a noticeable delay from turning key to starting, but it starts.
When it doesn't start. There is no clicking, there is full power to the vehicle, radio works, power windows work, heater works, etcetera.
I have tried removing from park, and starting in neutral.
I have tried returning to park and starting.
I have tried fidgeting with the battery connections.
Even in a moment of being really ticked, I fidgeted with the 4wd shifter to see if it did anything.

What works.....my son gets under it and taps the starter and it starts.

That would "SEEM" that the starter is bad, right ? But, it doesn't have any of the other typical symptoms of a bad starter.

Any suggestions.

Thanks

Dawn
10-12-2012 10:04 AM
08Jeep90 Have an '08 automatic and have the same problem. All I do is shake my handle in park and give it another turn and it works. Well atleast it has everytime since
10-11-2012 06:41 PM
JEEPDON Mine was merely a broken wire from starter relay to starter solenoid. Tech replaced said wire and now starter works every time!!
10-11-2012 03:50 PM
usmc323nova NHSTA complaint, enough of us do it .. they may just recall
10-11-2012 03:49 PM
usmc323nova Dealership said its the TPM sensor, located by the transmission. Part is $45 or so, however, labor is 4 hours .. quoted over $465 to replace the sensor. NHSTA complaint time, sounds like too many folks having the same problem
09-24-2012 10:11 PM
Thomo
Starter or WCM?

Quote:
Originally Posted by Timecloud View Post
Does the vehicle crank when dropped into neutral? If the starter was at fault it would act up regardless of the position of the gears. My last post noted that the dealer ran another ground to the starter. Although my issues have been minimized since then, only occurred once or twice since, that too did not resolve my issue. I have not had the WCM replaced either nor the NSS which are my main two suspects. I wouldn't waste my time with the starter and focus on the WCM first. If he complains then tell him if the starter repair doesn't work then he pays for the WCM repair. Bet he does what you want then. ;-)
Good luck.
Thanks Timecloud. I have a manual and when in neutral during a no start, I just get a click when I turn the key just as the TSB indicates. I don't think they even bothered to run proper diagnostics on it as per the TSB. He said the car started when he knocked the starter's solenoid with a hammer but that could be pure coincidence since it does start randomly. Principle of causality!

I also have a coolant leak at the intake manifold gasket. Not sure if those issues could be related but they want $800 for the repair so I'll have to sit on that for a bit and keep topping up.

Thanks for your input. I'll force the WCM issue and it will be my fault if it's not the issue. Is there a way we can know for certain it's the WCM? I was reading about taking out the IOD fuse...
09-23-2012 09:37 AM
Timecloud Does the vehicle crank when dropped into neutral? If the starter was at fault it would act up regardless of the position of the gears. My last post noted that the dealer ran another ground to the starter. Although my issues have been minimized since then, only occurred once or twice since, that too did not resolve my issue. I have not had the WCM replaced either nor the NSS which are my main two suspects. I wouldn't waste my time with the starter and focus on the WCM first. If he complains then tell him if the starter repair doesn't work then he pays for the WCM repair. Bet he does what you want then. ;-)
Good luck.
09-22-2012 01:50 AM
Thomo I'm having the same issue but the dealer wants to replace the starter motor despite being given the bulletin. He's been a mechanic for only two years so I am very concerned but this is the only Jeep dealership in the city. What is an IOD fuse and where is it located? I can't afford to play around with getting things fixed that won't solve the problem so I would really appreciate any advice about how I can determine if it's the WCM or the starter motor. Sometimes the wireless entry unlock doesn't work which is a bit suspect.
09-08-2012 11:46 AM
SkyTurtle
Return of the No-Start Issue

I posted back in March that replacing the Neutral Selector Switch (NSS) seemed to correct my no-start issue. And it did for a while. Last month it occurred again. Happened three times since. Each time, selecting neutral and back to drive makes it start.

I'm going to take the TBS bulletin (posted by Dana101) to my dealer and do some screaming. I'm out of warranty now and less than eager to pay out of pocket to replace a part that Chrysler knows is faulty.

I knew I should have gotten a manual. I knew it! Knew it! Knew it!

09-06-2012 09:52 AM
Dana101 Hey- Sorry about the trouble.

I had this same problem last year. I highly recommend you look into the WCM chip.

There is some kind of crazy anti theft thing that happens where your jeep won't start because it thinks its being stolen or ??? Some anti theft thing happens. That is why it won't start.

I replaced my chip and have had no issues since.... however, if on a budget or if you don't care, the neutral thing works too- You can check out my previous post a while back. I posted a link to a service bulletin where it talks about this issue with this WCM chip.

I don't know why it wasn't ever made a recall but if you dig ... you'll find an original bulletin from Chrysler stating there are problems with these chips and it causes a no crank engine.

The dealership didn't even know about it- I have no idea why I was the first to bring it to their attention. Or maybe because it wasn't a recall they didn't pay attention. In fact, the entire dealership / service group thought I was crazy - but I printed all everything I could find including these forums and took it to service.

They reluctantly replaced the chip and I never had a problem again.

Like I said, I have the original service announcement from Chrysler talking about the defect in the WCM chip.

You can find it online.... it takes some time. If you want a copy I can scan mine and send it to you but that service report usually shuts up anyone who says you are nuts.

Hope things go well. Let me know if you want a copy of the report.
Like I said, worst case- just put it in neutral.

thanks,
Dana
09-06-2012 12:22 AM
Thomo I was lucky enough to learn from this forum that there is a bulletin for the wireless control module causing a no start. Is this what you mean by key module? It appears to be an issue with 2007 JKs.
09-05-2012 12:42 AM
Wargolem
2012 sep 5th

I have a 2007 Sahara that I purchased from a friend about a month or two ago. Ran great the first month and still does. Well, all except I need to put new tires on it as the Mickey T's on it are a little worn. So anyway to the point...... Went to work yesterday and when I came out it acted like the battery was dead except that all the lights and radio were fine. Got jumped off and thought maybe I had left the headlights on since we go in before daylight. Cranked fine that night before the soccer game but came back to it after the game acted like battery was dead again. Got jumped off and thought maybe had left the interior light was on.

Came home could not sleep because I was worried about THE Jeep(yeah it is my big boy toy because I have never bought anything for myself since the kids were born and this was my first "splurge") so I hopped on these forums since it was the first hit on Google for 2007 Sahara won't start. Went outside tried to crank it.... wouldn't crank again same symptoms so I tried the start it in neutral workaround and it cranked like a boss.

Moral of the story is: these forums rock and you guys and gals are awesome! Thanks Jeep! Now to read some more and figure out how to replace this thing ya'll are talking about.
07-10-2012 05:26 AM
Thomo
2007 Wrangler No Start Club

I cannot thank the members of this forum enough for generously sharing your experience and wisdom about this no start issue. I haven't yet had it assessed at the dealer but could have easily been dragged down the expensive journey of replacing parts that are not related to the issue. I'll soon find out what the dealer mechanics are made of here! Thank you so much!!!!
07-02-2012 07:23 AM
Timecloud Finally took my Jeep to the Stealer to have it looked at. Had 5 updates done on the computer and they added a ground cable to the starter. It was a simple ground cable like you could buy at Wal-Mart ran behind the engine. Its been starting regularly ever since. don't know which one might have done the trick but its good for now. HTH
06-30-2012 10:15 AM
groundhogday
starting problem

I also have a 2007 jeep wrangler automatic 3.8L. From time to time it will turn over once and then go silent and not start. If i just try a couple of times that will work. other times I wait to the next day and it starts. Any suggestions?http://www.wranglerforum.com/images/.../surrender.gif
06-11-2012 04:28 PM
JEEPDON I am also starting to have a "no-start" issue. 2010 Sahara 6 speed manual. But, unless it is just chance, it only has been happening when doors are off! Weird, huh? Taking it to dealer this coming Friday AM to see what he can find. All dash light light up, but will not crank. Then after a bit, it will crank right up. I have replaced the battery, so that shouldn't be the problem.
06-11-2012 10:15 AM
jimjeep07
how can this NOT be a recall at this point?

Hi all- new to the forum looking up this very issue. Back again today after months of it not happening. New starter, battery, ground wire....thought all was well but doing it again. The starter is less than a year old and dealer wants to put ANOTHER new starter in?

I plan on printing this thread out and bringing to the dealership that maybe they're missing something before replacing the starter again.

Frustrating that I've taken care of the vehicle, it's not that old, and I have to do 'tricks' to get it to start, but bottom line, if it gets it to start.

thanks for everyone else's posts regarding this issue. VERY HELPFUL
04-24-2012 12:12 PM
Timecloud Update on my no start issue. Although I have focused my attention on the NSS as the culprit I decided to test something else along the WCM route since everyone else points to it. Yesterday it did not start so instead of dropping it down to -N- I hit the door unlock button once again. It started. I have done this 3 times to verify and worked everytime. So maybe there is something up with the WCM.
04-16-2012 06:50 PM
JkJared
Quote:
Originally Posted by kjeeper10

07 here the same.

Always getting funny looks from peeps when it takes a bit to turn over
Hahaha me too the look of 'is that thing gonna start'! But she always does.. My girlfriend said one time when she drove it to work she thought the engine was gonna drop out of it cause it kinda does do a little shake haha. Ohh man I doubt we'll ever find a fix to this but it doesn't bother me anymore since it always starts.. Who knows unburnt fuel? Or improper air to fuel ratio for a moment? It's endless!! Jared-
04-16-2012 06:45 PM
kjeeper10
Quote:
Originally Posted by JkJared

Same here 07 auto tho. Will always crank 2-3 seconds on the first start but drive around a bit let her sit and there's a chance she'll do it.. Just cranks extra long then fires up. Does it maybe 20% of the time witha Hot/warm engine. My theory is that there is unburnt fuel still in the chamber and it's burning the excess fuel before firing up.
07 here the same.

Always getting funny looks from peeps when it takes a bit to turn over
04-16-2012 06:34 PM
JkJared
Quote:
Originally Posted by Arpd3
Ok, I have a manual 07 Sahara.

Sometimes, less often then most times, it will take a few extra seconds to start.

Example: Normal start time is 2-3 seconds of engine turn.
Problem time: 6-8 Seconds of engine turn.

Any ideas?
Same here 07 auto tho. Will always crank 2-3 seconds on the first start but drive around a bit let her sit and there's a chance she'll do it.. Just cranks extra long then fires up. Does it maybe 20% of the time witha Hot/warm engine. My theory is that there is unburnt fuel still in the chamber and it's burning the excess fuel before firing up.
04-16-2012 06:03 PM
Timecloud My Aamco work didnt solve the issue, they said they would replace the NSS for $135 but was waiting on them to give me a credit for the $45.... still waiting.. I ended up adjusting the shift cable a bit more and the issue has decreased but not gone away. My money is one the NSS switch in my case.
- Skyturtle - Glad your is working and lucky for you it was under warranty.
03-28-2012 08:35 AM
SkyTurtle
Same Result as Dana101 - RESOLVED

I'm glad Dana posted the above TBS; could come in handy later.

I posted last August that I was having the same no-start issues with my 09 JK Sahara. Took everything from this thread to the dealer and requested they change the neutral selector switch (see below). Reluctantly, they did. And I've had no issues since.

The dealership was adamant that they had had NO RECALLS OR BULLETINS on this issue. Can't wait to show them this TBS if it happens again.

My work was under warranty, but here's the part info from the invoice. IDK if this is the same thing as a WCM, but it definitely sounds like it performs the same function:

SENSOR MA 80337155 #4659677-AC
03-27-2012 11:55 AM
Dana101 07 and 08 JK - Antitheft System - Engine No Crank/No Start Condition - July 08 Lance
11-10-2008, 12:19 PM

Antitheft System - Engine No Crank/No Start Condition

NUMBER: 08-007-08 REV. A

GROUP: Electrical

DATE: July 04,2008

THIS BULLETIN SUPERSEDES TECHNICAL SERVICE BULLETIN 08-007-08, DATED MARCH 04, 2008. THIS IS A COMPLETE REVISION AND NO ASTERISKS HAVE BEEN USED TO HIGHLIGHT REVISIONS.

DO NOT ORDER PART NUMBER 05026070AP UNTIL JULY 21, 2008. ALL OTHER PART NUMBERS ARE AVAILABLE NOW.
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

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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