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-   -   Need info (http://www.wranglerforum.com/f274/need-info-200723.html)

American dream 11-20-2012 11:06 PM

Need info
 
Hey guys I am new to the forum and really like all the info here. My question is our new jeep is a 2013 4door auto and when you come to a complete stop and then let off the brake about half the time the best way to describe it is it feels like someone just bumps you in the rear end. Is this normal?

panthermark 11-20-2012 11:11 PM

I don't have that problem. But....one of the first items I did was turn off hill assist. Maybe that is it?

American dream 11-20-2012 11:17 PM

I don't think it's on but I will check that out,thanks

wcbardwell 11-20-2012 11:31 PM

I second panthermark... Never experienced what you're talking about with my 2012 JKU. I had an old '94 Mazda B3000 some years back that had transmission trouble left and right... It would slip out of first gear at stops and pop back in rather violently when the revs were picked up. Sometimes it wouldn't need the gas and would do just as you are describing. Just thought I'd give any info I could... New Jeep shouldn't have transmission problems, but who knows... Could be defective...

wmwhitey 11-20-2012 11:38 PM

OP I have a 2012 jku also and I know what your talking about I have the same issue. I have noticed the more miles I put on the jeep the less it happens also. and for you guys wandering what it is it is suck a light bump if you dont know your car you will have no clue it even happened.

Deepjeep1371 11-20-2012 11:46 PM

Bump
 
I had the exact same thing in my 08 Tundra, now I just can't remember what it was. I had to learn on the Toyota forums cause as usuall the dealers played dumb. I'll think of it eventually......

The_Chief 11-21-2012 12:01 AM

It could be the gas shifting in the tank--these things are good for feeling that... Or, possibly a sticky caliper... I wouldn't sweat it.

Deepjeep1371 11-21-2012 12:28 AM

I wish I could remember
 
Just Google those symptoms you will find it. It's not a Jeep thing. Mind is a blank right now.

American dream 11-21-2012 07:44 AM

Wonder if I should try to at least get this documented,want to hold off on letting dealer tear into my new toy!

homeinfatuation 11-21-2012 08:22 AM

yeah,me too, agree, It could be the gas shifting in the tank--these things are good for feeling that.http://www.smecenter.net/aijie/images/5.gif

Wiseguyfish 11-21-2012 11:43 AM

Odd. My 2010 JKU doesnt do this, but my 2006 Toyota Tacoma does. And its a documented issue with many second gen Tacomas.

orygun 11-21-2012 11:53 AM

Quote:

Originally Posted by panthermark (Post 3016799)
I don't have that problem. But....one of the first items I did was turn off hill assist. Maybe that is it?

OP says their rig is an automatic. Do the automatics come with hill assist?

Plasticpirogue 11-21-2012 12:04 PM

Quote:

Originally Posted by orygun (Post 3018395)
OP says their rig is an automatic. Do the automatics come with hill assist?

Yes

panthermark 11-21-2012 12:07 PM

Quote:

Originally Posted by orygun (Post 3018395)
OP says their rig is an automatic. Do the automatics come with hill assist?

Yup, they do.

I have an auto as well...and why someone would need HSA on an auto beats me....it isn't like you have a clutch to worry about....

But it sounds like he may have a different problem.

The_Chief 11-21-2012 03:21 PM

No lights are coming on; he only notices it from a stop; the tranny is shifting fine... I'll bet it's the gas in the tank. Analyze the issue as you take your tank down to empty--bet it goes away.

American dream 11-21-2012 04:00 PM

Thanks again for all the input everyone! What is my 4door jeep wrangler sahara unlimited called on here as far as the initials go? Jku?

panthermark 11-21-2012 04:12 PM

Unofficially a JKU. All 2007+ Wranglers are "JK's". The "U" isn't an official Jeep designation...but it makes sense for forum talk. Rubi's are known ans JKR's or JKUR's...but Saharas and Sports both share and "S"...so we are not cool enough to get our own designation like the Rubi's....


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