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-   -   Hesitation on highway 2012 (http://www.jeepgarage.org/f162/hesitation-on-highway-2012-a-62964.html)

Darth Vapor SRT 07-17-2013 06:28 PM

Hesitation on highway 2012
 
Real weird thing happened today. I was on the highway doing about 65, went to switch lanes and stomped on it and it REALLY hesitated. I think when I hit the gas the tranny was in the process of changing gears and it was a weird timing issue but this was not the first time this happened. I only use shel vpower 93 octane. 2 tanks ago I used STP fuel injector treatment thinking that was the issue. What could be causing this? Thing runs like a champ 99.9% of the time. I would say in 1 month this has happened 5 times.

A.V.GCSRT8 07-17-2013 07:56 PM

Re: Hesitation on highway 2012
 
when your in auto mode the tranny is less prone to down shift, it tries to hold that higher gear. If you keep it in sport mode it will downshift more aggressively. Also if you get a tune either custom or canned, you can control how sensitive the throttle is with the throttle booster and that helps also. I have a custom tune and don't have any issues, Jim a local guy here where I live and a member on here is completely stock and has been having this issue a lot. They just flashed his tcm with a tsb update to try and fix that issue

Darth Vapor SRT 07-17-2013 08:17 PM

Re: Hesitation on highway 2012
 
Quote:

Originally Posted by A.V.GCSRT8 (Post 860125)
when your in auto mode the tranny is less prone to down shift, it tries to hold that higher gear. If you keep it in sport mode it will downshift more aggressively. Also if you get a tune either custom or canned, you can control how sensitive the throttle is with the throttle booster and that helps also. I have a custom tune and don't have any issues, Jim a local guy here where I live and a member on here is completely stock and has been having this issue a lot. They just flashed his tcm with a tsb update to try and fix that issue

So should I keep it in sport mode more often than not?

A.V.GCSRT8 07-17-2013 09:04 PM

Re: Hesitation on highway 2012
 
Preference I guess I never run in sport mode. SRT told Jim to put it in sport mode if you have to go up hills and that sort of thing where you want it to be more sensitive to down shift. You could use the paddle shifters to and just downshift yourself real quick. My honest opinion just get a tune ;)

EviL 08-05-2013 03:56 AM

Re: Hesitation on highway 2012
 
btw i had the same problem and it was kind of no throttle response.
that is because of the car from the front has the active collision unit
and when it is dirty or it senses that with that amount of throttle it will cause an accident
it gives not throttle response.

smart system :p

kennzz05 08-05-2013 07:47 AM

Re: Hesitation on highway 2012
 
Quote:

Originally Posted by EviL (Post 869881)
btw i had the same problem and it was kind of no throttle response.
that is because of the car from the front has the active collision unit
and when it is dirty or it senses that with that amount of throttle it will cause an accident
it gives not throttle response.

smart system :p

sounds like a big PITA to me

jim383 08-05-2013 08:01 AM

Re: Hesitation on highway 2012
 
Heres the TSB #21-005-13 that fixed mine in auto mode and yes the tranny down shifts a lot more now than b4 the fix.

Darth Vapor SRT 08-06-2013 02:21 PM

Re: Hesitation on highway 2012
 
Took the truck in to the dealer to have them check it out. They ended up decarbing and doing a full fuel injector and intake clean. Car feels worlds better.

radbushi 08-06-2013 04:22 PM

Re: Hesitation on highway 2012
 
Quote:

Originally Posted by EviL (Post 869881)
btw i had the same problem and it was kind of no throttle response.
that is because of the car from the front has the active collision unit
and when it is dirty or it senses that with that amount of throttle it will cause an accident
it gives not throttle response.

smart system :p

My throttle overrides the front collision system. Besides you should be able to ram someone in the ass if you wanted to :) J/K

jim383 08-17-2013 10:01 PM

Re: Hesitation on highway 2012
 
Quote:

Originally Posted by jim383 (Post 869952)
Heres the TSB #21-005-13 that fixed mine in auto mode and yes the tranny down shifts a lot more now than b4 the fix.

I found out this fix was for my limp mode problem not my power lose and since the reflash for the limp mode everything was ok for 1 month and now im taking it in this wed for the reflash that they said they found for the lose of power while just cruising along and this seems to happen between 40/50 mph and mostly on any type of a incline. By the way my limp mode problem hasnt happened in over 1 month.

Red Suns 08-28-2013 02:47 AM

Quote:

Originally Posted by Darth Vapor SRT (Post 870747)
Took the truck in to the dealer to have them check it out. They ended up decarbing and doing a full fuel injector and intake clean. Car feels worlds better.

Out of curiosity, do you happen to have a catch can installed in your engine?

radbushi 08-29-2013 01:10 PM

Re: Hesitation on highway 2012
 
Quote:

Originally Posted by Darth Vapor SRT (Post 870747)
Took the truck in to the dealer to have them check it out. They ended up decarbing and doing a full fuel injector and intake clean. Car feels worlds better.

How many miles is on your engine?


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