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-   -   10 JK shifting issues (http://www.wranglerforum.com/f274/10-jk-shifting-issues-111462.html)

danzy55 09-06-2011 04:01 PM

10 JK shifting issues
 
have a 10 Sahara 6spd I notice the power dips when shifting from 2-3rd and 3rd-4th.....Strange sensation and it lasts for only a split second but you can feel it.
Almost feels like its dieseling or shuddering a little before the power kicks in. Has anyone else had this happen?? Its not my shifting I've always driven a stick.

ESP 09-06-2011 04:03 PM

Subscribed.

ESP 09-06-2011 04:44 PM

Bump?

RB-10rubicon 09-06-2011 04:47 PM

Ive had a problem like that back in june .between the shift on accelaration you can feel (pulsation) i posted a thread but got no response .it hasent done it since i dont know ,lets see if this thread runs more than two replys

ESP 09-06-2011 04:51 PM

I had this too. It was after a weekend trip to the mountains where I was driving around 6000 ft in elevation. I've been trying to narrow it down to either gas or the altitude but can't figure it out yet. The hesitation is the same on mine between 2-3 gear and 3-4 only. It seems to happen right around the 2500rpm mark. Is it the same for you?

Razinhell 09-06-2011 04:55 PM

In my arm chair mechanic experience is it possible that the fuel filer can sometimes cause problems such as this? I know in diesels anytime we experience some sort of stutter under acceleration, some have found relief after changing out a fuel filter.

Razinhell 09-06-2011 04:56 PM

Quote:

Originally Posted by ESP123 (Post 1545177)
I had this too. It was after a weekend trip to the mountains where I was driving around 6000 ft in elevation. I've been trying to narrow it down to either gas or the altitude but can't figure it out yet. The hesitation is the same on mine between 2-3 gear and 3-4 only. It seems to happen right around the 2500rpm mark. Is it the same for you?

If you are saying it's only on specific gear changes then i don't think it could be fuel related at all.

RB-10rubicon 09-06-2011 05:08 PM

Mine was between 2-3-3-4 i only have 9400 miles on it and i dont put no name gas in

NJeepChic 09-06-2011 05:14 PM

I had a similar experience a few days ago w my 11 JK. Between 3 & 4th it felt a bogging down (power dip?) sensation and a slight shimmy on my shifter.

Was dreading how to explain this to the dealer.

Motorbreath 09-06-2011 05:29 PM

Quote:

Originally Posted by ESP123
Bump?

After 45 mins?

kjeeper10 09-06-2011 05:39 PM

Me too SprintBooster solved :hide:

Motorbreath 09-06-2011 05:57 PM

Quote:

Originally Posted by Razinhell
In my arm chair mechanic experience is it possible that the fuel filer can sometimes cause problems such as this? I know in diesels anytime we experience some sort of stutter under acceleration, some have found relief after changing out a fuel filter.

No way a fuel filter goes bad that fast, unless you put 75k on it in the past year. Even if it was the fuel filter, you would notice it all the time not just between certain gears. Acceleration would be sluggish all around. Nice input though, not trying to bash. Merely my 2 cents.

kjeeper10 09-06-2011 06:00 PM

Quote:

Originally Posted by Motorbreath

No way a fuel filter goes bad that fast, unless you put 75k on it in the past year. Even if it was the fuel filter, you would notice it all the time not just between certain gears. Acceleration would be sluggish all around. Nice input though, not trying to bash. Merely my 2 cents.

Agree.

ESP 09-06-2011 06:36 PM

Quote:

Originally Posted by Motorbreath (Post 1545300)
After 45 mins?

Yep.

Thracks 09-07-2011 02:56 AM

It's probably just the way the engines are. My Wrangler does that same thing. It suddenly gets a burst of power 2 seconds after the shift.

kjeeper10 09-07-2011 05:50 AM

Quote:

Originally Posted by Thracks
It's probably just the way the engines are. My Wrangler does that same thing. It suddenly gets a burst of power 2 seconds after the shift.

Throttle by wire bullshat,

It bothered me more coming from driving a Tj. If that's what these guys are experiencing-dunno.

1or2 sec delay makes the jeep feel sluggish . Even just maintaining a speed, I have to be on the throttle, It's annoying.

Love the SprintBooster-googleit :)
Best (only) mod I've done so far.
Makes my jeepy more alive.

It boost the throttle response. I removed it when my jeep when in for service, those 2 days were horrible love the thing.

.

danzy55 09-07-2011 07:24 AM

ESP123 I have the exact issue right around 2500rpm and just seems to be from 2-3 and 3-4th. I'm going to run by the dealer today and get their 2 cents I'm sure they will say that's normal..:(
When I get back I'll post what the dealer has to say about it, gotta go in anyway since I have some factory paint issues to get taken care of, makes you wonder if anyone at the Jeep plant does final inspection.

Thanks everyone for the input glad I'm not the only one unfortunately that has this issue.

ESP 09-07-2011 07:32 AM

Quote:

Originally Posted by danzy55 (Post 1547544)
ESP123 I have the exact issue right around 2500rpm and just seems to be from 2-3 and 3-4th. I'm going to run by the dealer today and get their 2 cents I'm sure they will say that's normal..:(
When I get back I'll post what the dealer has to say about it, gotta go in anyway since I have some factory paint issues to get taken care of, makes you wonder if anyone at the Jeep plant does final inspection.

Thanks everyone for the input glad I'm not the only one unfortunately that has this issue.

Lets us know what you find out danzy55. :thumb:

daggo66 09-07-2011 07:40 AM

Quote:

Originally Posted by Motorbreath (Post 1545383)
No way a fuel filter goes bad that fast, unless you put 75k on it in the past year. Even if it was the fuel filter, you would notice it all the time not just between certain gears. Acceleration would be sluggish all around. Nice input though, not trying to bash. Merely my 2 cents.

Fuel filters don't "go bad", they clog. Debris in the fuel can clog a brand new filter.

daggo66 09-07-2011 07:41 AM

Have you guys tried getting the RPM's up a little more before shifting? 2500 is a little low unless you are cruising on flat ground or going downhill.

kjeeper10 09-07-2011 07:50 AM

Ok.. Let me make it more clear.

It is NORMAL, this was one of the first questions I asked Evan, the sales guy, 2 days after I bought my 07 "why does it hesitate when I change gears around 2000-2500" he told me it was completely normal and a complaint that's brought up often. Ok-fill me in? "what your feeling is the slight delay in throttle caused by the drive by wire thats innewer vehicles"
I did some more digging around and came to the conclusion that some experience it more than others, usually more if your jeep is babied. The ECU is supposed to learn your driving style and adjust accordingly.
After a while it gets let's pronounces or some just get used to it.
I did not, programmers will also better the throttle response, I was inpatient and really did not want a tuner for my 6 speed, that's why I bought the SprintBooster. Night and
Day-instant throttle response, problem solved :thumb:

daggo66 09-07-2011 07:52 AM

Well then you should have mentioned sooner that Evan the sales guy said it was normal. :rolleyes:

kjeeper10 09-07-2011 07:53 AM

Quote:

Originally Posted by daggo66
Have you guys tried getting the RPM's up a little more before shifting? 2500 is a little low unless you are cruising on flat ground or going downhill.

Very true also, 2800-3000 is where I shift

kjeeper10 09-07-2011 07:54 AM

Quote:

Originally Posted by daggo66
Well then you should have mentioned sooner that Evan the sales guy said it was normal. :rolleyes:

Evan the sales boy was a cool cat :)

ESP 09-07-2011 07:59 AM

Thanks for the response Kjeeper. I'm interested to see what he finds out after taking to the dealer today too. The same problem can sometimes get several "this is what causes it from dealers and others". I think the part about babying it may have something to do with it as that is pretty much what I've done. I don't jack rabbit start it and I accelerate slowly. I've done this since I bought it brand new so that may be part of it. However, I don't switch gears around 2500rpms. I do a little higher as mentioned. The stuttering happens when accelerating through 2400-2600 prior to shifting. Is it more likely that it may be the fuel filter then Daggo?

kjeeper10 09-07-2011 08:10 AM

Quote:

Originally Posted by ESP123
Thanks for the response Kjeeper. I'm interested to see what he finds out after taking to the dealer today too. The same problem can sometimes get several "this is what causes it from dealers and others". I think the part about babying it may have something to do with it as that is pretty much what I've done. I don't jack rabbit start it and I accelerate slowly. I've done this since I bought it brand new so that may be part of it. However, I don't switch gears around 2500rpms. I do a little higher as mentioned. The stuttering happens when accelerating through 2400-2600 prior to shifting. Is it more likely that it may be the fuel filter then Daggo?

The complaints come from jeeps with lower miles, unless there is a known problem, I can't see the filter being it. Those filters are in the tank and supposed to last for a very long time.

Will see what his dealer says :)

daggo66 09-07-2011 08:38 AM

Quote:

Originally Posted by kjeeper10 (Post 1547653)
The complaints come from jeeps with lower miles, unless there is a known problem, I can't see the filter being it. Those filters are in the tank and supposed to last for a very long time.

Will see what his dealer says :)

I agree. I wasn't saying that I thought it was the fuel filter, just saying age has nothing to do with it. I have never noticed any of the hesitation you guys are talking about.

kjeeper10 09-07-2011 08:52 AM

In all seriousness..

I think it all depends on what you drove previous to the jeep, for most complaints come from Tj owners. No secret that the jk has a slight delay in throttle response. How I understand it is, the JK throttle response was programmed in the ECU to help with the "jerkiness" complaints when off road.
I never thought my Tj was "jerky" but then again, some don't feel the delay in the Jk. I think it all depends on how you drive also. I'm heavy on the gas to start but let off and drive the speed limit just cruising.

Appologies if this makes no sense, I'm trying :(

ESP 09-07-2011 10:26 AM

Here's what it feels like. Your accelerating holding the gas pedal down with constant force. The RPMs are climbing and you continue to hold constant force against the gas. The Jeep reaches said RPMs and it feels like a rope is being pulled on your jeep from behind for a split second. It's noticeable and the jeep slows down for a second while your still accelerating. Pushing the clutch in or letting off the gas pedal after this happens stops it and it feels normal then on for the other gears.

kjeeper10 09-07-2011 11:23 AM

Quote:

Originally Posted by ESP123
Here's what it feels like. Your accelerating holding the gas pedal down with constant force. The RPMs are climbing and you continue to hold constant force against the gas. The Jeep reaches said RPMs and it feels like a rope is being pulled on your jeep from behind for a split second. It's noticeable and the jeep slows down for a second while your still accelerating. Pushing the clutch in or letting off the gas pedal after this happens stops it and it feels normal then on for the other gears.

I agree, what if you (in neutral) step on the gas, there should be a slight delay. It does
Feel like a hesitation like described. It only happens when you let of the throttle and apply again (in between gears).
When I removed the booster, I tried just "getting on it" like people say to do. I can't mimic what this thing does. Still a hesitation or delay, very annoying IMO
I very used to the direct throttle that was in my Tj.


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