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Old 12-26-2012, 11:15 AM   #1
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Throttle response

2012 JK, does anyone else have a problem with falling on its nose when initially letting out the clutch, almost like u need to slip the clutch to get rolling?

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Old 12-26-2012, 11:20 AM   #2
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Yes, it's horrible.. this is why electronic throttle is a terrible idea. I've been driving manuals from 1988 models and up...but this JKU makes me look like a novice driver. My wife has even made comments. They totally destroyed the manual trans. driving experience by mating it to the electronic throttle.

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Old 12-26-2012, 11:24 AM   #3
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How many miles?
Get the rpms up higher before shifting.
If its still a problem for you, check out the Sprintbooster. Expensive but a great little mod.
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Old 12-26-2012, 11:51 AM   #4
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^I think the OP is referring to starting out from a stopped position.
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Old 12-26-2012, 11:53 AM   #5
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Never had any throttle responce issues, but throttle response does suck in the jeep wrangler jk edition.
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Old 03-22-2013, 01:58 AM   #6
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My wifes 2012 JK has a horrible throttle response...

From a dead stop theres a dead moment as the engine comes to life just as you put the accelerator down, its really annoying. I was hoping for a factory fix.
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Old 03-22-2013, 02:06 AM   #7
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Yep, it's terrible in my 2013 JKR. I've never owned anything but manuals since I learned to drive. My 2007 Toyota FJ I think was electronic as well but it wasn't this bad! It's like there's nothing happening for a second or two then it decides to rev and jerk you around unless you want to slip the clutch OR you just baby the hell out of it and just clutch out then gas and let the idle rpms get you. Ah well just a steeper learning curve on this pita.
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Old 03-22-2013, 06:10 AM   #8
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I never had any such problem.
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Old 03-22-2013, 06:16 AM   #9
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I never had any such problem.
Aren't the 3.8 wranglers regular cable throttle?

I personally have found that sometime during a slow takeoff if I let the rpm's drop too low the engine will just turn off. Generally if I really get after a takeoff it seems okay, but something definatly is different with DBW?

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Old 03-22-2013, 06:19 AM   #10
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My 2011 with the 3.8 had electronic throttle.
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Old 03-22-2013, 06:26 AM   #11
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Aren't the 3.8 wranglers regular cable throttle?

I personally have found that sometime during a slow takeoff if I let the rpm's drop too low the engine will just turn off. Generally if I really get after a takeoff it seems okay, but something definatly is different with DBW?

Frogy
All JK's have DBW. You guys may be experiencing HSA issues. I've learned how to use it properly and never have problems with it and use it to my advantage. Others have turned it off.
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Old 03-22-2013, 06:39 AM   #12
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I know what your talking about with the lag. I hate dbw. My BMW 135i had it also and a scion tc that I owned had dbw but it wasn't as bad as my 2012 jk.
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Old 03-22-2013, 08:07 AM   #13
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I know what your talking about with the lag. I hate dbw. My BMW 135i had it also and a scion tc that I owned had dbw but it wasn't as bad as my 2012 jk.
I get the distinct impression that the software in the PCM
is tailored for use with an automatic. My '08 will under
some circumstances when the engine is loaded at idle,
simply stop running. Shove the clutch in and the engine
coasts to a stop. Annoying as he** at a traffic light...

Not too impressed with their software engineers...

-W
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Old 03-22-2013, 10:07 AM   #14
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My 07 is the same way. It took me a long time to get it mastered. Now im experiencing a 1st gear pop out fairly frequently.
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Old 03-22-2013, 10:39 AM   #15
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Check out "viper throttle body".
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Old 03-22-2013, 10:53 AM   #16
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Mine was like that too, but my Predator Tuner has an Option to Increase the Throttle Sensitivity by 20%. While that doesn't Sound like much, it made a HUGE Difference.

Still not as Sensitive as a Cable Throttle, but ALOT better than it was.
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Old 03-22-2013, 03:20 PM   #17
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Dbw is the worst. Vw is the worst since it has a delay response for about a second or two. They should of stayed with a cable &i really want to change it to one.

Like mention, I've heard the sprint booster works great. I've never tried it since it is a few hundred bucks.

There are times where I'm able to drive mi beastie ok & other times when I don't. And it's usually from 1st-3rd.
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Old 03-22-2013, 03:39 PM   #18
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All JK's have DBW. You guys may be experiencing HSA issues. I've learned how to use it properly and never have problems with it and use it to my advantage. Others have turned it off.
X10
DBW rocks!!!! If you learn to use it properly!! If you don't, it probably sucks!!
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Old 03-22-2013, 05:40 PM   #19
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All JK's have DBW. You guys may be experiencing HSA issues. I've learned how to use it properly and never have problems with it and use it to my advantage. Others have turned it off.
I did have this happen a couple of times, but what I am talking about isn't something that happens as a result of HSA. It seems to me that there is some sort of minimum rpm range where spark and fuel shut off, the engine doesn't stumble, it just shuts off.

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Old 03-22-2013, 05:45 PM   #20
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X10
DBW rocks!!!! If you learn to use it properly!! If you don't, it probably sucks!!

maybe it's just me or maybe you didn't read the original post but he was talking about HSA, not DBW, if DBW is so great why wouldn't it be the same as cable or better? I have owned more than 10 different vehicles with manual transmissions, some harder to drive than others. I find the trottle on my JK to be quite tricky to modulate. Please tell me how a vehicle that is difficult to drive properly is a great idea off road?
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Old 03-22-2013, 06:07 PM   #21
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When I first got my '13 I wasn't too thrilled with the take offs. I turned off the HSA and that made enough difference for me. If you haven't tried that, give it a shot.
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Old 03-22-2013, 06:22 PM   #22
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maybe it's just me or maybe you didn't read the original post but he was talking about HSA, not DBW, if DBW is so great why wouldn't it be the same as cable or better? I have owned more than 10 different vehicles with manual transmissions, some harder to drive than others. I find the trottle on my JK to be quite tricky to modulate. Please tell me how a vehicle that is difficult to drive properly is a great idea off road?
I have explained the way to use the DBW system on other threads on this forum. Maybe its best to just say" Follow me, and do as I do". Or come to my world and go for a ride with me and I can show how it works>
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Old 03-22-2013, 06:41 PM   #23
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Throttle response

who dug this thread up

Rocking the SB and tuner for almost 2 years.
JK moves pretty good. No lag
Expensive fix though
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Old 03-22-2013, 09:52 PM   #24
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Yhere is a device called Sprint Booster that will fix the sluggish throttle response . Look on UTUBE for Sprint Boost the guys from Truck U tested it out
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Old 03-22-2013, 10:51 PM   #25
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Old 03-22-2013, 11:40 PM   #26
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Nothing to do with HSA. I turned it off in my 13 with the EVIC. It just laggy.
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Old 03-23-2013, 08:17 AM   #27
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I have explained the way to use the DBW system on other threads on this forum. Maybe its best to just say" Follow me, and do as I do". Or come to my world and go for a ride with me and I can show how it works>
The JK electronic throttle will attempt to keep the engine running at idle speed at whatever torque requirement as long as your foot is completely off the gas.
Then, when you step on the gas, the "drive by wire" feature takes over.
At that time, if you are in the "transition", your engine will hesitate.

First of all from what I understand about what the OP has talked about, he is talking about normal driving, not off road. I took the text above from your post about DBW, and it does not seem applicable since when taking off and shifting through gears on normal roads means using the skinny pedal.

Second I have 3.21 gears so if I raise the rpm's much I launch. With your lower gearing my bet is you can rev your engine without taking off too quickly. Can you explain to me how DBW is helping me i this case when I am simply trying to take off slowly in 2-wheel on normal streets?

BTW most vehicles that I have wheeled will maintain idle and drive as long as the obstacle encountered doesn't require huge throttle input. Most of what I have owned was FI, and most FI vehicles have an IAC that can shift "throttle" by a few hundred rpm's

Frogy
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Old 03-23-2013, 08:39 AM   #28
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[QUOTE=Frogy;3541917
Second I have 3.21 gears so if I raise the rpm's much I launch. With your lower gearing my bet is you can rev your engine without taking off too quickly. Can you explain to me how DBW is helping me i this case when I am simply trying to take off slowly in 2-wheel on normal streets?

Frogy[/QUOTE]
I started out w/ 3.21 gears in my JEEP, and yes, I f****d a couple of times leaving a stop sign. That is when I figured I had to do things differently.
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Old 03-23-2013, 08:47 AM   #29
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Would the Procal help at all? I saw the part for throttle position in the instructions but have not read about it. Does or would that do anything to help.
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Old 03-23-2013, 08:50 AM   #30
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Would the Procal help at all? I saw the part for throttle position in the instructions but have not read about it. Does or would that do anything to help.
Nope----- Sprint Booster if you want to change throttle response.
I don't have one, but kjeeper10 swears by his-- see above post.

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