cant go past 85mph - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ General Discussion Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 03-30-2013, 11:14 AM   #1
Jeeper
 
MrStuky's Avatar
 
Join Date: Jul 2012
Location: Lynwood, CA
Posts: 165
cant go past 85mph

So I have a wrangler 06 se 4 cylinder and can't go past 85, when I'm pressing on the gas and hits 85 it feels like it goes in neutral then when it hits 80 it starts working fine. What could it be?

Thanks.

MrStuky is offline   Quote Quick Reply
Old 03-30-2013, 11:41 AM   #2
Jeeper
 
YjKalamity's Avatar
 
Join Date: May 2012
Location: Murrieta/Hemet Calif.
Posts: 1,206
Sounds like it's limited, but that wouldn't make much sense to be limited at 85. The real question is why are you trying to go faster than 65? Especially with 4 angry squirrels, I had to try to hit 85 in my yj...and that's going downhill, and forget anything past 60 going uphill.

__________________
Fred just wants to mash rocks. RAWR!!!
YjKalamity is offline   Quote Quick Reply
Old 03-30-2013, 11:43 AM   #3
Jeeper
 
Join Date: Jan 2010
Location: Houston, Tx
Posts: 633
It's probably telling you it doesn't want to end up in a ditch!
But actually it sounds like some kind of governor. Is it always at exactly the same speed or RPMs?
Shoe is online now   Quote Quick Reply
Old 03-30-2013, 11:48 AM   #4
Jeeper
 
Helmsy's Avatar
 
Join Date: Feb 2011
Location: Southeast Ohio
Posts: 239
I'm baffled as to how you get to 80 let alone why you want to go faster!!
__________________
1998 Jeep Wrangler SE
1997 Chevy Silverado
2005 Harley Davidson 1200 Sportster
Helmsy is offline   Quote Quick Reply
Old 03-30-2013, 11:56 AM   #5
Jeeper
 
MrStuky's Avatar
 
Join Date: Jul 2012
Location: Lynwood, CA
Posts: 165
I stays same rpm, and I believe it is limited. Speedometer says 95mph but my GPS says 85. Speedometer was set for 35 tires but downgraded to 33.
MrStuky is offline   Quote Quick Reply
Old 03-30-2013, 12:04 PM   #6
Jeeper
 
Raiderfan001's Avatar
 
Join Date: Mar 2012
Location: Knob Noster, MO
Posts: 6,994
You should slow the **** down.
Raiderfan001 is online now   Quote Quick Reply
Old 03-30-2013, 12:05 PM   #7
Jeeper
 
Helmsy's Avatar
 
Join Date: Feb 2011
Location: Southeast Ohio
Posts: 239
Quote:
Originally Posted by raiderfan001 View Post
you should slow the **** down.
x10000
__________________
1998 Jeep Wrangler SE
1997 Chevy Silverado
2005 Harley Davidson 1200 Sportster
Helmsy is offline   Quote Quick Reply
Old 03-30-2013, 12:06 PM   #8
Supporting Member

WF Supporting Member
 
jeepwayoflife's Avatar
 
Join Date: Nov 2011
Location: California
Posts: 3,069
Quote:
Originally Posted by MrStuky View Post
I stays same rpm, and I believe it is limited. Speedometer says 95mph but my GPS says 85. Speedometer was set for 35 tires but downgraded to 33.
That will do it. I think the speed governor is set at 95 on our jeeps. Be careful of your tires at that speed though. They have a max speed rating and my 33's are only rated at 96mph max. I can't imagine how a jeep would handle with a blown tire at 90mph. My right rear blew at 70 or so and it was pretty scary.
__________________
--------------------------------------------------------
jeepwayoflife is online now   Quote Quick Reply
Old 03-30-2013, 12:08 PM   #9
Jeeper
 
Helmsy's Avatar
 
Join Date: Feb 2011
Location: Southeast Ohio
Posts: 239
Quote:
Originally Posted by MrStuky View Post
I stays same rpm, and I believe it is limited. Speedometer says 95mph but my GPS says 85. Speedometer was set for 35 tires but downgraded to 33.
My jeep start feel a little squirmy when I get to about 60-65. I can imagine going 85. I drove my jeep from Texas to Ohio usually never going faster than 60. I can't see a situation you need to go that fast.
__________________
1998 Jeep Wrangler SE
1997 Chevy Silverado
2005 Harley Davidson 1200 Sportster
Helmsy is offline   Quote Quick Reply
Old 03-30-2013, 12:14 PM   #10
Jeeper
 
Join Date: Mar 2013
Location: SW WA
Posts: 41
My advice? If u want to go that fast get a sports car built to hug therapy and handle those speeds.
JeepAngel is offline   Quote Quick Reply
Old 03-30-2013, 12:18 PM   #11
Jeeper
 
Join Date: Mar 2013
Location: SW WA
Posts: 41
Lol I meant a sports car that will HUG THE ROAD. Darn auto correct.
JeepAngel is offline   Quote Quick Reply
Old 03-30-2013, 12:20 PM   #12
Jeeper
 
batty505's Avatar
 
Join Date: Aug 2012
Location: NoVA
Posts: 104
Bump what jeepangel

Jeeps aren't built for going fast. The reason many folks upgrade to an I6 or V8 is for torque and horsepower.
If you're a rush junkie, look at CBRs or Ninjas. They're flick able and scary.
batty505 is offline   Quote Quick Reply
Old 03-30-2013, 12:27 PM   #13
Jeeper
 
Raiderfan001's Avatar
 
Join Date: Mar 2012
Location: Knob Noster, MO
Posts: 6,994
Or if you want to drive fast do it on a track rather than endangering people's lives like a jackass.
Raiderfan001 is online now   Quote Quick Reply
Old 03-30-2013, 12:37 PM   #14
Jeeper
 
TJGARMA03's Avatar
 
Join Date: Feb 2012
Location: USA
Posts: 429
Nice crosswind at 85mph and you'll be a statistic. Slow the hell down. Your only gonna save a couple mins on the trip. Obviously you don't care about yourself. The people on the road around you have people that care about them so slow down.
TJGARMA03 is offline   Quote Quick Reply
Old 03-30-2013, 12:59 PM   #15
Jeeper
 
TJspeed's Avatar
 
Join Date: Feb 2011
Location: New Mexico
Posts: 3,432
yup sounds like there is a limiter. My blazer would do that. It'd hit 96 then it would cut the power till 90 then engage the power again till I hit 96 then cut the power again ect...

I have no clue if my TJ has a limiter. Ive hit 95 (at least thats what the speedo said.) and it felt like it could still keep going.
__________________
2000 solar yellow 4.0 sport 3" BDS, 1.25" JKS body lift, 1" Zone motor lift, JKS quicker disconnects, 33x10.5 BFG KM2 on black american racing wheels. D44 rear.

TJspeed is online now   Quote Quick Reply
Old 03-30-2013, 01:09 PM   #16
Jeeper
 
MrStuky's Avatar
 
Join Date: Jul 2012
Location: Lynwood, CA
Posts: 165
Thanks for unrequested perspectives. I'm not hitting 85mph all road long, was just testing on 70mph limit highway earlier this morning, and my question was why this happens, not to be lectured.

Thanks.
MrStuky is offline   Quote Quick Reply
Old 03-30-2013, 01:37 PM   #17
Jeeper
 
Rpkittle's Avatar
 
Join Date: Sep 2011
Location: Austin, TX
Posts: 373
Click image for larger version

Name:	ImageUploadedByTapatalk1364668600.102468.jpg
Views:	210
Size:	28.0 KB
ID:	229264

Lol. In all seriousness, this was before I got the correct speedo gear in after upgrading to 33's.

Edit: GPS said 65
Rpkittle is online now   Quote Quick Reply
Old 03-30-2013, 01:43 PM   #18
Jeeper
 
batty505's Avatar
 
Join Date: Aug 2012
Location: NoVA
Posts: 104
Mr Stuky

No disrespect but if you post questions expect comments.
Advice is free and you got what you paid for.
batty505 is offline   Quote Quick Reply
Old 03-30-2013, 02:22 PM   #19
Jeeper
 
Atthehop's Avatar
 
Join Date: Jul 2008
Location: NW, NJ
Posts: 3,776
His next post will be about poor fuel economy.
__________________
Retired my 94 YJ 4cyl 5spd @ 200K
Now in a 04 TJ 4cyl 5spd CV @120K+
Both as a commuter vehicle in NW, NJ
April 2012.downsized and now a 99er.
Atthehop is online now   Quote Quick Reply
Old 03-30-2013, 02:32 PM   #20
Jeeper
 
YjKalamity's Avatar
 
Join Date: May 2012
Location: Murrieta/Hemet Calif.
Posts: 1,206
Quote:
Originally Posted by Atthehop View Post
His next post will be about poor fuel economy.
Because there aren't enough of those
__________________
Fred just wants to mash rocks. RAWR!!!
YjKalamity is offline   Quote Quick Reply
Old 04-01-2013, 12:43 AM   #21
Jeeper
 
Join Date: Mar 2013
Location: SW WA
Posts: 41
Sorry Mr Stuky.... I thought u were requesting advice bcuz u had a new jeep and weren't sure about the speed issues. My bad. Good luck though. If I were you I would take the advice of those that have been jeepin awhile b us they know what they are talking about. I'm a newb Wrangler owner but was well aware of the speed issues bfore I got behind the wheel
JeepAngel is offline   Quote Quick Reply
Old 04-01-2013, 03:57 AM   #22
Jeeper
 
InvisiblePants's Avatar
 
Join Date: Jan 2013
Location: Charleston, SC
Posts: 517
Images: 11
My 98 ranger would do the same thing. But I has since grown up and slowed down on public streets/highways.
InvisiblePants is offline   Quote Quick Reply
Old 04-01-2013, 04:21 AM   #23
Jeeper
 
AVtj03's Avatar
 
Join Date: Jul 2011
Location: Villa Park, Il
Posts: 160
Quote:
Originally Posted by Raiderfan001 View Post
You should slow the **** down.
^ yup
AVtj03 is offline   Quote Quick Reply
Old 04-01-2013, 04:25 AM   #24
Jeeper
 
AVtj03's Avatar
 
Join Date: Jul 2011
Location: Villa Park, Il
Posts: 160
Quote:
Originally Posted by Rpkittle View Post
Attachment 229264

Lol. In all seriousness, this was before I got the correct speedo gear in after upgrading to 33's.

Edit: GPS said 65
95 < 3000rpms?

what are you in 6th gear?

I'll have to pay more attention to mine next time i hit 75...
AVtj03 is offline   Quote Quick Reply
Old 04-01-2013, 04:26 AM   #25
Jeeper
 
AVtj03's Avatar
 
Join Date: Jul 2011
Location: Villa Park, Il
Posts: 160
Quote:
Originally Posted by Atthehop View Post
His next post will be about poor fuel economy.
thats friggin' funny
AVtj03 is offline   Quote Quick Reply
Old 04-01-2013, 04:57 AM   #26
Jeeper
 
Join Date: Mar 2011
Posts: 425
For the record, there is no speed limiter in a Wrangler, and never has been.

There is an RPM limiter built in to the ECM program that cuts off the fuel injectors when you hit the RPM limit which is 5400RPM, in the red zone on the tach. Depending upon tire size, speedometer gear, axle gearing, and the "pinion factor" variable selected in the ECM, the RPM limit is encountered at various indicated speeds. I hit mine once when I got on the highway and nailed the accelerator in 1st gear, forgetting to upshift my 5-speed. I was not going very fast but the tires did chirp as the torque peaked on the way up the RPM scale.

The RPM limiter is a good thing that prevents your engine from flying into pieces. There is an available MOPAR performance ECM (the whole thing, not a chip) without a rev limiter, it costs over a grand. It should NEVER be used with a stock engine, only on a carefully built and balanced 4.0L engine with an extra capacity oil pump and stiffer valve springs to avoid valve float at high RPMs. Those valve springs will wear out a cam in about 5000 miles, which is not a problem on a race engine.
__________________
Gary
1967 Kaiser Commando
2001 Grand Cherokee WJ
2003 Rubicon TJ
KaiserJeep is offline   Quote Quick Reply
Old 04-01-2013, 06:56 AM   #27
hdb
Jeeper
 
Join Date: Jun 2011
Posts: 188
damn, Mr. Stuky must have done something else to you guys... he wasnt complaining


so... does anybody know why I get such bad gas mileage? Poor fuel economy makes Jeep Wranglers and their drivers stupid
hdb is offline   Quote Quick Reply
Old 04-01-2013, 07:09 AM   #28
Jeeper
 
Atthehop's Avatar
 
Join Date: Jul 2008
Location: NW, NJ
Posts: 3,776
Quote:
Originally Posted by hdb View Post
damn, Mr. Stuky must have done something else to you guys... he wasnt complaining


so... does anybody know why I get such bad gas mileage? Poor fuel economy makes Jeep Wranglers and their drivers stupid
Your getting bad fuel economy because your prius turned into a wrangler.
__________________
Retired my 94 YJ 4cyl 5spd @ 200K
Now in a 04 TJ 4cyl 5spd CV @120K+
Both as a commuter vehicle in NW, NJ
April 2012.downsized and now a 99er.
Atthehop is online now   Quote Quick Reply
Old 04-01-2013, 07:22 AM   #29
Jeeper

WF Supporting Member
 
O_M_Jeep's Avatar
 
Join Date: Aug 2011
Location: South Central Wyoming
Posts: 930
Quote:
Originally Posted by MrStuky View Post
Thanks for unrequested perspectives. I'm not hitting 85mph all road long, was just testing on 70mph limit highway earlier this morning, and my question was why this happens, not to be lectured.

Thanks.
It's amazing how quick these guys are to point out the stupidity huh?
I think if you make sure you kill only yourself and not anyone else on the road
with you they would be very accomodating and would actually help you go faster. In fact, I think I'll help you, just to show I'm not a douche-waffle who actually gives 2 squirts of piss if you live or die.

If you really want to go faster, you need to find a long long downhill grade, there are quite a few near you, what you do is, get it up to 95/85, then, to decrease resistance, take it out of gear, then, to stop the fan and engine from rotating and to gain mass, shut the key off (make sure you turn it all the way or the steering wont lock).

Good luck and enjoy the new speeds.

-Darwin
O_M_Jeep is online now   Quote Quick Reply
Old 04-01-2013, 08:49 AM   #30
Jeeper
 
sparky's Avatar
 
Join Date: Oct 2009
Location: Phila
Posts: 1,789
It's also because you have a 4 cylinder and 35" tires with no aerodynamics. That's as fast as it will go, especially if you have tall gears in there for the 35's.

sparky is offline   Quote Quick Reply
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Jeep Wrangler Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off




» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 07:58 PM.



Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC