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Unread 01-13-2014, 09:25 AM   #1
bsundacvr
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1995 YJ Wrangler 
 
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Location: Port St. Lucie, FL
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95 yj wont go past 63 mph on interstate

I have a 95 yj with a 4" lift on 33" tires, jeep struggles to get up to speed, will barely do 65 mph, anyone else have this problem???

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Unread 01-13-2014, 09:40 AM   #2
AmmitOsiris
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How I dare reply.. But. What gears do you have?

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Unread 01-13-2014, 09:41 AM   #3
AmmitOsiris
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Also engine and trans.

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Unread 01-13-2014, 09:46 AM   #4
Old4X
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Unread 01-13-2014, 09:51 AM   #5
bsundacvr
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Stock gears, it's a 4.0
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Unread 01-13-2014, 10:01 AM   #6
Que89YJ
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Even with a 4" lift and 33s you should be able to do the speed limit on the freeway. Please fill out your profile as complete as you can. It is necessary to give you good advice.
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Unread 01-13-2014, 10:17 AM   #7
AmmitOsiris
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Especially if you have a 4.0. You definitely be able to keep speed, is your engine up to par? Does it have a miss here and there? Last tune up, .... I have no clue.....

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Unread 01-13-2014, 10:27 AM   #8
bsundacvr
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Just had tuneup, ran fine before the lift and tires, switch out to 411 gears maybe?? Runs good around town, just doesn't have the balls on the freeway!
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Unread 01-13-2014, 10:39 AM   #9
Mark05059
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don't shift into 5th gear as early
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Unread 01-13-2014, 11:06 AM   #10
EABiker
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Did you change the speedometer gear when you went to 33's??
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Unread 01-13-2014, 11:06 AM   #11
Mobile_Homie
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I have a 4.0 w/auto, stock 3:56s and 33s...60-70 mph is about it.
Bare in mind, unless you have changed the speedo gear, that 63 mph on the dash is closer to 70...
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Unread 01-13-2014, 11:13 AM   #12
brzehentmaier
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With a strong headwind, a slight incline and I swear I can run faster than my 2.5. Be thankful you can reach 65. But it's a jeep so I don't mind.


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Unread 01-13-2014, 11:26 AM   #13
bsundacvr
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I got it to hit 70 today, speedo says 64, GPS speedo says 70, I rarely go on the freeway, oh well, thanks for the responses
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Unread 01-13-2014, 12:03 PM   #14
Adams77
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Quote:
Originally Posted by brzehentmaier View Post
With a strong headwind, a slight incline and I swear I can run faster than my 2.5. Be thankful you can reach 65. But it's a jeep so I don't mind.


Bernie
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Unread 01-13-2014, 12:12 PM   #15
EABiker
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Quote:
Originally Posted by bsundacvr View Post
I got it to hit 70 today, speedo says 64, GPS speedo says 70, I rarely go on the freeway, oh well, thanks for the responses

Your speedometer is reading low because the speedometer gear in the transmission is for the stock tire size and now, you have larger tires requiring a different gear.
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