Has anyone had WJ problems when installing oversized tire? - JeepForum.com

 
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post #1 of 11 Old 07-22-2009, 03:03 PM Thread Starter
crashcraddock
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Has anyone had WJ problems when installing oversized tire?

The Jeep dealer told me today that some people have tranny problems when installing oversized tires. I don't remember if my torque converter started acting up before or after the tire switch, I think it was after. The mechanic that updated my pcm and tcm told the service advisor that his Jeep acted up after he installed larger tires. So has anyone else had this problem, or do you all for chips?

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post #2 of 11 Old 07-22-2009, 03:36 PM
comptiger5000
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I don't exactly believe it. My mother's WJ 4.0 did need a tranny rebuild at about 75k, but I think it was more from neglect than the 245/70/16 A/Ts it's worn for most of it's life.
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post #3 of 11 Old 07-22-2009, 04:08 PM Thread Starter
crashcraddock
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Now the tranny shop is saying he doesn't think the tranny is bad, but something engine related e.i. senors or something. Who knows, I'll find out more tomorrow.
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post #4 of 11 Old 07-22-2009, 04:09 PM
ArloGuthroJeep
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Yeah the bigger tires will be harder on the transmission, axles, engine, transfercase, u-joints, etc...

The 4.0L doesn't have a strong transmission behind it in the first place. Not sure which engine you have.

'04 WJ, 6" Clayton LA's, 242 SYE, 35" BFG MT KM2's, 4.56 gears, & D44a locked
'14 WK2 Limited w/5.7L, ORAI, & Tow Package


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post #5 of 11 Old 07-22-2009, 04:13 PM Thread Starter
crashcraddock
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I have the 4.7 with the 45rfe tranny (good stuff), but the Jeep dealer was refering to speed sensors and stuff. I think he was getting me confused with a newer Jeep(my sister's WK).
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post #6 of 11 Old 07-22-2009, 08:10 PM
herrmy
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I believe it's a 545RFE behind the 4.7.

ROLL TIDE!!!
2002 Grand Cherokee 4.7 HO
3" IRO Coils, MX6's, JKS Adj Trackbar, Rancho SS, KOR Dual SS, Addco rear, BBK 70mm TB, K&N CAI, Magnaflow catback w/ high flow cat and 265/75 M/T MTZ's on 16" M/T Classic II's
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post #7 of 11 Old 07-22-2009, 10:07 PM Thread Starter
crashcraddock
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Not in the 99 and 00s. And maybe even some 01s
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post #8 of 11 Old 07-22-2009, 11:09 PM
herrmy
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Whoops your right!

ROLL TIDE!!!
2002 Grand Cherokee 4.7 HO
3" IRO Coils, MX6's, JKS Adj Trackbar, Rancho SS, KOR Dual SS, Addco rear, BBK 70mm TB, K&N CAI, Magnaflow catback w/ high flow cat and 265/75 M/T MTZ's on 16" M/T Classic II's
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post #9 of 11 Old 10-05-2009, 06:43 PM
rgbourne2004
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Tranny Problems

I have a 2005 Jeep Wrangler with a 4.0 I6 and auto tranny. I havent had any trouble with the transmission until i changed the tire size. I went from the factory tires to **** cepek 17R35 Mudders. Now when the trans gets warm it doesnt want to shift down to 1st. No problem in reverse or higher gears. At times if i accelerate strongly it feels at if the trans slips out of gear and after my rpms and trans pressure lowers it starts to pull again. Dont know if this helps, but i havent narrowed the problem, if you have please let me know. Thanks.http://www.jeepforum.com/ubb/confused.gif
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post #10 of 11 Old 10-22-2009, 06:02 PM
jeepers99
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bought my 99 jeep wj 4.0 at 90k miles. already had larger tires on(the largest that would fit with stock suspension. minor rubbing) Rebuilt tranny at 130k because reverse went out (partially my fault). Leaky transfer case caused the fluid to get low and the gears to slip. did not know for about a week. About 2 weeks after i changed the seal, I gassed it in reverse while against a high curb. The shop who rebuilt the tranny installed an aftermarket tranny cooler. has worked good since. now at about 145k
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post #11 of 11 Old 10-25-2009, 06:02 PM
SENECA
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Garage
My WJ has never been better after the IRO 6.5 lift and slightly larger than stock 32" tires.

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